Faculty Profiles - SHIMIZU Hirohiko

Papers - SHIMIZU Hirohiko

Division display >> ／ All the affair displays 1 - 475 of about 475

New muonic He atom HFS measurements at J-PARC MUSE

Goto Y., Fukumura S., Strasser P., Ino T., Iwai R., Kanda S., Kawamura S., Kitaguchi M., Nishimura S., Oku T., Okudaira T., Shimizu H.M., Shimomura K., Tada H., Torii H.A.

Interactions Vol. 245 ( 1 ) 2024.12

Publisher：Interactions

Muonic He (μHe) is a hydrogen-like atom composed of a helium atom with one of its electrons replaced by a negative muon. Measurements of the ground-state hyperfine structure (HFS) interval of the μHe atom is a sensitive tool to test the three-body atomic system, bound-state quantum electrodynamics (QED) theory, and determine fundamental constants of the negative muon magnetic moment and mass. It allows a test of the CPT theorem in muons by comparing these constants with positive muons. Precise measurements of the ground-state HFS interval using a microwave magnetic resonance technique are now in progress at J-PARC by the MuSEUM collaboration. Furthermore, a new experimental approach to recover the muon polarization lost during the muon cascade process is being investigated by repolarizing μHe atoms using a spin-exchange optical pumping (SEOP) technique. The first laser repolarization experiment was recently performed. An overview of the different features of these new μHe atom HFS measurements and the latest results are presented.

DOI： 10.1007/s10751-024-01912-2

Performance of the Fully Equipped Spin Flip Chopper for the Neutron Lifetime Experiment at J-PARC Open Access

Mishima K., Ichikawa G., Fuwa Y., Hasegawa T., Hino M., Hosokawa R., Ino T., Iwashita Y., Kitaguchi M., Matsuzaki S., Mogi T., Okabe H., Oku T., Okudaira T., Seki Y., Shimizu H.E., Shimizu H.M., Takahashi S., Tanida M., Yamashita S., Yokohashi M., Yoshioka T.

Progress of Theoretical and Experimental Physics Vol. 2024 ( 9 ) 2024.9

Publisher：Progress of Theoretical and Experimental Physics

To solve the "neutron lifetime puzzle,"where measured neutron lifetimes differ depending on the measurement methods, an experiment with a pulsed neutron beam at J-PARC is in progress. In this experiment, neutrons are bunched into 40-cm lengths using a spin flip chopper (SFC), where the statistical sensitivity was limited by the aperture size of the SFC. The SFC comprises three sets of magnetic supermirrors and two resonant spin flippers. In this paper, we discuss an upgrade to enlarge the apertures of the SFC. With this upgrade, the statistics per unit time of the neutron lifetime experiment increased by a factor of 2.8, while maintaining a signal-to-noise ratio of 250-400, which is comparable to the previous one. Consequently, the time r equir ed to r each a pr ecision of 1 s in the neutron lifetime ex- periment was reduced from 590 to 170 days, which is a significant reduction in time. This improvement in the statistics will also contribute to the reduction of systematic uncertain- ties, such as background evaluation, fostering further advancements in the neutron lifetime experiments at J-PARC.

DOI： 10.1093/ptep/ptae123

Circular polarization measurement for individual gamma rays in capture reactions with intense pulsed neutrons Open Access

Endo S., Abe R., Fujioka H., Ino T., Iwamoto O., Iwamoto N., Kawamura S., Kimura A., Kitaguchi M., Kobayashi R., Nakamura S., Oku T., Okudaira T., Okuizumi M., Omer M., Rovira G., Shima T., Shimizu H.M., Shizuma T., Taira Y., Takada S., Takahashi S., Yoshikawa H., Yoshioka T., Zen H.

European Physical Journal A Vol. 60 ( 8 ) 2024.8

Publisher：European Physical Journal A

Measurements of circular polarization of γ-ray emitted from neutron capture reactions provide valuable information for nuclear physics studies. The spin and parity of excited states can be determined by measuring the circular polarization from polarized neutron capture reactions. Furthermore, the γ-ray circular polarization in a neutron capture resonance is crucial for studying the enhancement effect of parity nonconservation in compound nuclei. The γ-ray circular polarization can be measured using a polarimeter based on magnetic Compton scattering. A polarimeter was constructed, and its performance indicators were evaluated using a circularly polarized γ-ray beam. Finally, as a demonstration, the γ-ray circular polarization was measured in 32S(n,γ)33S reactions with polarized neutrons.

DOI： 10.1140/epja/s10050-024-01392-6

Sagnac-type neutron displacement-noise-free interferometeric gravitational-wave detector Open Access

Kawasaki Y., Iwaguchi S., Ishikawa T., Nishizawa A., Kitaguchi M., Yamagata Y., Chen Y., Wu B., Shimizu R., Umemura K., Tsuji K., Shimizu H., Michimura Y., Kobayashi K., Onishi T., Kawamura S.

Classical and Quantum Gravity Vol. 41 ( 11 ) 2024.6

Publisher：Classical and Quantum Gravity

The detection of low-frequency gravitational waves on Earth requires the reduction of displacement noise, which dominates the low-frequency band. One method to cancel test mass displacement noise is a neutron displacement-noise-free interferometer (DFI). This paper proposes a new neutron DFI configuration, a Sagnac-type neutron DFI, which uses a Sagnac interferometer in place of the Mach-Zehnder interferometer. We demonstrate that a sensitivity of the Sagnac-type neutron DFI is higher than that of a conventional neutron DFI with the same interferometer scale. This configuration is particularly significant for neutron DFIs with limited space for construction and limited flux from available neutron sources.

DOI： 10.1088/1361-6382/ad42fa

Combination of crystal growth with optical floating zone and evaluation of Nd<sup>3+</sup>:LaAlO<inf>3</inf> crystals with the dynamic nuclear polarization of <sup>139</sup>La and <sup>27</sup>Al Open Access

Ishizaki K., Ide I., Fujita M., Hotta H., Ito Y., Iinuma M., Ikeda Y., Iwata T., Kitaguchi M., Kohri H., Matsushita T., Miura D., Miyachi Y., Shimizu H.M., Yosoi M.

Review of Scientific Instruments Vol. 95 ( 6 ) 2024.6

Publisher：Review of Scientific Instruments

Producing a polarized lanthanum (La) target with high polarization and long relaxation time is crucial for realizing time-reversal violation experiments using polarized neutron beams. We use a LaAlO3 crystal doped with a small amount of Nd3+ ions for the polarized lanthanum target. Optimizing the amount of Nd3+ ions is considerably important because the achievable polarization and relaxation time strongly depend on this amount. We established a fundamental method to grow single crystals of Nd3+:LaAlO3 using an optical floating zone method that employs halogen lamps and evaluated the crystals with the dynamic nuclear polarization (DNP) method for polarizing nuclear spins. Two crystal samples were grown by ourselves and evaluated with the DNP at 1.3 K and 2.3 T for the first time, except for the target materials of protons. The enhancement of nuclear magnetic resonance signals for 139La and 27Al was successfully observed, and the enhancement factors were eventually 3.5 ± 0.3 and 13 ± 3 for the samples with Nd3+ ions of 0.05 and 0.01 mol. %, respectively. These enhancement factors correspond to absolute vector polarizations of 0.27% ± 0.02% (Nd3+ 0.05 mol. %) and 1.4% ± 0.3% (Nd3+ 0.01 mol. %). Although the obtained polarizations are still low, they are acceptable as a first step. The combination scheme of the crystal growth and the evaluation of the crystals is found to be effectively applicable for optimizing the amount of Nd3+ ions for improving the performance of the polarized target.

DOI： 10.1063/5.0202680

Present Status of Spectroscopy of the Hyperfine Structure and Repolarization of Muonic Helium Atoms at J-PARC Open Access

Fukumura S., Strasser P., Fushihara M., Goto Y., Ino T., Iwai R., Kanda S., Kawamura S., Kitaguchi M., Nishimura S., Oku T., Okudaira T., Shimizu H.M., Shimomura K., Tada H., Torii H.A.

Physics (Switzerland) Vol. 6 ( 2 ) page： 877 - 890 2024.6

Publisher：Physics (Switzerland)

The mass (Formula presented.) of the negative muon is one of the parameters of the elementary particle Standard Model and it allows us to verify the CPT (charge–parity–time) symmetry theorem by comparing (Formula presented.) value with the mass (Formula presented.) of the positive muon. However, the experimental determination precision of (Formula presented.) is (Formula presented.), which is an order of magnitude lower than the determination precision of (Formula presented.) at (Formula presented.). The authors aim to determine (Formula presented.) and the magnetic moment (Formula presented.) with a precision of (Formula presented.) through spectroscopy of the hyperfine structure (HFS) of muonic helium-4 atom (Formula presented.) under high magnetic fields. (Formula presented.) is an exotic atom where one of the two electrons of the (Formula presented.) atom is replaced by a negative muon. To achieve the goal, it is necessary to determine the HFS of (Formula presented.) with a precision of (Formula presented.). This paper describes the determination procedure of the HFS of (Formula presented.) in weak magnetic fields reported recently, and the work towards achieving the goal of higher precision measurement.

DOI： 10.3390/physics6020054

High sensitivity of a future search for effects of P -odd/ T -odd interactions on the 0.75 eV p -wave resonance in n→ +139 La→ forward transmission determined using a pulsed neutron beam Open Access

Nakabe R., Auton C.J., Endo S., Fujioka H., Gudkov V., Hirota K., Ide I., Ino T., Ishikado M., Kambara W., Kawamura S., Kimura A., Kitaguchi M., Kobayashi R., Okamura T., Oku T., Okudaira T., Okuizumi M., Otero Munoz J.G., Parker J.D., Sakai K., Shima T., Shimizu H.M., Shinohara T., Snow W.M., Takada S., Takahashi R., Takahashi S., Tsuchikawa Y., Yoshioka T.

Physical Review C Vol. 109 ( 4 ) 2024.4

Publisher：Physical Review C

Neutron transmission experiments can offer a new type of highly sensitive search for time-reversal invariance violating (TRIV) effects in nucleon-nucleon interactions via the same enhancement mechanism observed for large parity violating (PV) effects in neutron-induced compound nuclear processes. In these compound processes, the TRIV cross section is given as the product of the PV cross section, a spin factor κ, and a ratio of TRIV and PV matrix elements. We determined κ to be 0.59±0.05 for La139+n using both (n,γ) spectroscopy and (n→ +139La→) transmission. This result quantifies for the first time the high sensitivity of the La139 0.75-eV p-wave resonance in a future search for effects of P-odd/T-odd interactions in (n→ +139La→) forward transmission.

DOI： 10.1103/PhysRevC.109.L041602

Spin dependence in the p -wave resonance of la 139 - + n - + Open Access

Okudaira T., Nakabe R., Auton C.J., Endo S., Fujioka H., Gudkov V., Ide I., Ino T., Ishikado M., Kambara W., Kawamura S., Kobayashi R., Kitaguchi M., Okamura T., Oku T., Otero Munoz J.G., Parker J.D., Sakai K., Shima T., Shimizu H.M., Shinohara T., Snow W.M., Takada S., Tsuchikawa Y., Takahashi R., Takahashi S., Yoshikawa H., Yoshioka T.

Physical Review C Vol. 109 ( 4 ) 2024.4

Publisher：Physical Review C

We measured the spin-dependent cross section at a neutron-induced p-wave resonance using a polarized epithermal neutron beam and a polarized nuclear target. Our study focuses on the 0.75 eV p-wave resonance of La139+n, where previous experiments have shown a large enhancement of parity violation. The spin dependence of the neutron absorption cross section of polarized La139 and polarized neutrons determines the partial neutron width of the p-wave resonance. This partial width is a key parameter needed to determine the sensitivity of this system to possible parity-odd and time reversal-odd interactions beyond the standard model. Our findings therefore serve as a foundation for a future search for time reversal violation in this compound nuclear system.

DOI： 10.1103/PhysRevC.109.044606

Predictive factors of post-operative apathy in patients with diffuse frontal gliomas undergoing awake brain mapping

Motomura K., Kawamura A., Ohka F., Aoki K., Nishikawa T., Yamaguchi J., Kibe Y., Shimizu H., Maeda S., Saito R.

Journal of Neuropsychology Vol. 18 ( S1 ) page： 73 - 84 2024.3

Publisher：Journal of Neuropsychology

Patients with diffuse frontal gliomas often present with post-operative apathy after tumour removal. However, the association between apathy and tumour removal of gliomas from the frontal lobe remains unknown. This study aimed to investigate the factors influencing post-operative apathy after tumour removal in patients with diffuse frontal gliomas. We compared the demographics and clinical characteristics of patients with and without post-operative apathy in a cohort of 54 patients who underwent awake brain mapping for frontal gliomas. The frequency of clinical parameters such as left-sided involvement, high-grade tumour types (WHO grades III, IV), main tumour location in the anterior cingulate gyrus (ACC) and/or dorsolateral prefrontal cortex (DLPFC) and orbitofrontal cortex (OFC) was significantly greater in the apathetic group compared to the non-apathetic group. The apathetic group scored significantly lower on neuropsychological assessments such as the Letter Fluency Test among the Word Fluency Tests than the non-pathetic group (p =.000). Moreover, the scores of Parts 3, and 3–1 of the Stroop test were significantly lower in the apathetic group than those in the non-apathetic group (p =.023,.027, respectively). Multivariate model analysis revealed that the appearance of post-operative apathy was significantly related to side of the of lesion [left vs. right, hazard ratio (HR) = 8.00, 95% confidence interval (CI) = 1.36–46.96, p =.021], location of the main tumour in the frontal lobe (ACC/DLPFC/OFC vs. others, HR = 7.99, 95% CI = 2.16–29.59, p =.002), and the Letter Fluency Test (HR =.37, 95% CI =.15–.90, p =.028). Post-operative apathy is significantly associated with ACC and/or DLPFC and OFC in the left hemisphere of diffuse frontal gliomas. Apathy in frontal gliomas is correlated with a decline in the Letter Fluency Test scores. Therefore, this instrument is a potential predictor of post-operative apathy in patients with diffuse frontal gliomas undergoing awake brain mapping.

DOI： 10.1111/jnp.12345

Development of Neutron Interferometer Using Multilayer Mirrors and Measurements of Neutron-Nuclear Scattering Length with Pulsed Neutron Source Open Access

Fujiie T., Hino M., Hosobata T., Ichikawa G., Kitaguchi M., Mishima K., Seki Y., Shimizu H.M., Yamagata Y.

Physical Review Letters Vol. 132 ( 2 ) 2024.1

Publisher：Physical Review Letters

This study entailed the successful deployment of a novel neutron interferometer that utilizes multilayer mirrors. The apparatus facilitates a precise evaluation of the wavelength dependence of interference fringes utilizing a pulsed neutron source. Our interferometer achieved an impressive precision of 0.02 rad within a 20-min recording time. Compared to systems using silicon crystals, the measurement sensitivity was maintained even when using a simplified disturbance suppressor. By segregating beam paths entirely, we achieved successful measurements of neutron-nuclear scattering lengths across various samples. The values measured for Si, Al, and Ti were in agreement with those found in the literature, while V showed a disparity of 45%. This discrepancy may be attributable to impurities encountered in previous investigations. The accuracy of measurements can be enhanced further by mitigating systematic uncertainties that are associated with neutron wavelength, sample impurity, and thickness. This novel neutron interferometer enables us to measure fundamental parameters, such as the neutron-nuclear scattering length of materials, with a precision that surpasses that of conventional interferometers.

DOI： 10.1103/PhysRevLett.132.023402

EUSO-SPB1 mission and science Open Access

Abdellaoui G., Abe S., Adams J.H., Allard D., Alonso G., Anchordoqui L., Anzalone A., Arnone E., Asano K., Attallah R., Attoui H., Pernas M.A., Bachmann R., Bacholle S., Bagheri M., Bakiri M., Baláz J., Barghini D., Bartocci S., Battisti M., Bayer J., Beldjilali B., Belenguer T., Belkhalfa N., Bellotti R., Belov A.A., Benmessai K., Bertaina M., Bertone P.F., Biermann P.L., Bisconti F., Blaksley C., Blanc N., Blin-Bondil S., Bobik P., Bogomilov M., Bolmgren K., Bozzo E., Briz S., Bruno A., Caballero K.S., Cafagna F., Cambié G., Campana D., Capdevielle J.N., Capel F., Caramete A., Caramete L., Caruso R., Casolino M., Cassardo C., Castellina A., Catalano O., Cellino A., Černý K., Chikawa M., Chiritoi G., Christl M.J., Colalillo R., Conti L., Cotto G., Crawford H.J., Cremonini R., Creusot A., Cummings A., de Castro Gónzalez A., de la Taille C., del Peral L., Desiato J., Damian A.D., Diesing R., Dinaucourt P., Djakonow A., Djemil T., Ebersoldt A., Ebisuzaki T., Eser J., Fenu F., Fernández-González S., Ferrarese S., Filippatos G., Finch W., Fornaro C., Fouka M., Franceschi A., Franchini S., Fuglesang C., Fujii T., Fukushima M., Galeotti P., García-Ortega E., Gardiol D., Garipov G.K., Gascón E., Gazda E., Genci J., Golzio A., Gorodetzky P., Gregg R., Green A.

Astroparticle Physics Vol. 154 2024.1

Publisher：Astroparticle Physics

The Extreme Universe Space Observatory on a Super Pressure Balloon 1 (EUSO-SPB1) was launched in 2017 April from Wanaka, New Zealand. The plan of this mission of opportunity on a NASA super pressure balloon test flight was to circle the southern hemisphere. The primary scientific goal was to make the first observations of ultra-high-energy cosmic-ray extensive air showers (EASs) by looking down on the atmosphere with an ultraviolet (UV) fluorescence telescope from suborbital altitude (33 km). After 12 days and 4 h aloft, the flight was terminated prematurely in the Pacific Ocean. Before the flight, the instrument was tested extensively in the West Desert of Utah, USA, with UV point sources and lasers. The test results indicated that the instrument had sensitivity to EASs of ⪆3 EeV. Simulations of the telescope system, telescope on time, and realized flight trajectory predicted an observation of about 1 event assuming clear sky conditions. The effects of high clouds were estimated to reduce this value by approximately a factor of 2. A manual search and a machine-learning-based search did not find any EAS signals in these data. Here we review the EUSO-SPB1 instrument and flight and the EAS search.

DOI： 10.1016/j.astropartphys.2023.102891

Improved Measurements of Muonic Helium Ground-State Hyperfine Structure at a Near-Zero Magnetic Field Open Access

Strasser P., Fukumura S., Iwai R., Kanda S., Kawamura S., Kitaguchi M., Nishimura S., Seo S., Shimizu H.M., Shimomura K., Tada H., Torii H.A.

Physical Review Letters Vol. 131 ( 25 ) 2023.12

Publisher：Physical Review Letters

Muonic helium atom hyperfine structure (HFS) measurements are a sensitive tool to test the three-body atomic system and bound-state quantum electrodynamics theory, and determine fundamental constants of the negative muon magnetic moment and mass. The world's most intense pulsed negative muon beam at the Muon Science Facility of the Japan Proton Accelerator Research Complex allows improvement of previous measurements and testing further CPT invariance by comparing the magnetic moments and masses of positive and negative muons (second-generation leptons). We report new ground-state HFS measurements of muonic helium-4 atoms at a near-zero magnetic field, performed for the first time using a small admixture of CH4 as an electron donor to form neutral muonic helium atoms efficiently. Our analysis gives Δν=4464.980(20) MHz (4.5 ppm), which is more precise than both previous measurements at weak and high fields. The muonium ground-state HFS was also measured under the same conditions to investigate the isotopic effect on the frequency shift due to the gas density dependence in He with CH4 admixture and compared with previous studies. Muonium and muonic helium can be regarded as light and heavy hydrogen isotopes with an isotopic mass ratio of 36. No isotopic effect was observed within the current experimental precision.

DOI： 10.1103/PhysRevLett.131.253003

Demonstration of simultaneous measurement of the spin rotation of dynamically-diffracted neutrons from multiple crystal planes using pulsed neutrons

Itoh S., Fukumura S., Fujiie T., Kitaguchi M., Shimizu H.M.

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Vol. 1057 2023.12

Publisher：Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

The strong electric field inside a crystal interacting with dynamically-diffracted neutrons by a single crystal can be used in experiments to search for the electric dipole moment of neutrons. This intra-crystal electric field can be evaluated from the neutron spin rotation derived from the dynamical diffraction. Neutron spin rotations from multiple crystal planes were observed simultaneously using pulsed neutrons with a single SiO2 crystal. The spin rotation of dynamically-diffracted neutrons from (110)-crystal plane with the symmetric Laue configuration was consistent with the spin rotation calculated from the intra-crystal electric field reported by the previous experiments. In addition, the spin rotation was also studied for the (02̄1)-, (011)- and (111̄)-crystal planes, which are asymmetric Laue configurations. There have been no previous studies of spin rotations or intra-crystal electric fields on these crystal planes. The experimental results suggest that spin rotation can occur even on crystal planes where it was previously thought that the spin rotation could not occur due to zero intra-crystal electric field. This information is important to study the sensitivity and the systematic uncertainties in nEDM search experiments by crystal diffractions.

DOI： 10.1016/j.nima.2023.168734

Diffuse scattering model of ultracold neutrons on wavy surfaces Open Access

Imajo S., Akatsuka H., Hatanaka K., Higuchi T., Ichikawa G., Kawasaki S., Kitaguchi M., Mammei R., Matsumiya R., Mishima K., Picker R., Schreyer W., Shimizu H.M.

Physical Review C Vol. 108 ( 3 ) 2023.9

Publisher：Physical Review C

Metal tubes plated with nickel-phosphorus are used in many fundamental physics experiments that use ultracold neutrons (UCN) because of their ease of fabrication. These tubes are usually polished to an average roughness of 25-150nm. However, there is no scattering model that accurately describes UCN scattering on such a rough guide surface with a mean-square roughness greater than 5nm. We, therefore, developed a scattering model for UCN in which scattering from random surface waviness with a size larger than the UCN wavelength is described by a microfacet Bidirectional Reflectance Distribution Function model (mf-BRDF model), and scattering from smaller structures by the Lambert's cosine law (Lambert model). For the surface waviness, we used the statistical distribution of surface slope measured by an atomic force microscope on a sample piece of guide tube as an input of the model. This model was used to describe UCN transmission experiments conducted at the pulsed UCN source in J-PARC. In these experiments, a UCN beam collimated to a divergence angle smaller than ±6° was directed into a guide tube with a mean-square roughness of 6.4 to 17nm at an oblique angle, and the UCN transport performance and its time-of-flight distribution were measured while changing the angle of incidence. The mf-BRDF model combined with the Lambert model with scattering probability pL=0.039±0.003 reproduced the experimental results well. We have thus established a procedure to evaluate the characteristics of UCN guide tubes with a surface roughness of approximately 10nm.

DOI： 10.1103/PhysRevC.108.034605

Current status of the polarized La target development for T-violation search with slow neutron Open Access

Ide I., Fujita M., Hotta H., Iinuma M., Ikeda Y., Ito Y., Iwata T., Kitaguchi M., Kohri H., Miura D., Miyachi Y., Okudaira T., Shimizu H.M., Takanashi Y., Yosoi M.

Proceedings of Science Vol. 433 2023.8

Publisher：Proceedings of Science

We are addressing the development of a polarized lanthanum (139La) target by applying a standard dynamic nuclear polarization (DNP) technique to a single crystal of lanthanum aluminate (LaAlO3) doped with neodymium ions (Nd3+), which is very attractive to search for violating effects of the time-reversal invariance with neutrons. The use of the LaAlO3 crystals as target material is very crucial to extend the spin-lattice relaxation time (T1) through the optimization of the Nd3+ concentration. We have almost established a method for precise control of the Nd3+ amount and this method has allowed us to grow the crystal with 0.01 mol% concentration differently from the 0.05 mol% reached before. Simple DNP experiments using a single-shot dewar at 1.3 K and 2.3 T allowed the evaluation of the T1 and the maximum polarization of these crystals. By that we have found that the 0.01 mol% concentration is the best one among the crystals tested in the past. Both, T1 and the maximum polarization of the 0.01 mol% crystal, have not been exactly obtained because of the long relaxation time, Thus, the preparation of a new DNP system is in progress toward DNP experiments for long-term measurement.

DOI： 10.22323/1.433.0038

Angular distribution of γ rays from a neutron-induced p -wave resonance of Xe 132 Open Access

Okudaira T., Tani Y., Endo S., Doskow J., Fujioka H., Hirota K., Kameda K., Kimura A., Kitaguchi M., Luxnat M., Sakai K., Schaper D.C., Shima T., Shimizu H.M., Snow W.M., Takada S., Yamamoto T., Yoshikawa H., Yoshioka T.

Physical Review C Vol. 107 ( 5 ) 2023.5

Publisher：Physical Review C

A neutron-energy dependent angular distribution was measured for individual γ rays from the 3.2 eV p-wave resonance of Xe131+n, that shows enhanced parity violation owing to a mixing between s- and p-wave amplitudes. The γ-ray transitions from the p-wave resonance were identified, and the angular distribution with respect to the neutron momentum was evaluated as a function of the neutron energy for 7132 keV γ rays, which correspond to a transition to the 1807 keV excited state of Xe132. The angular distribution is considered to originate from the interference between s- and p-wave amplitudes, and will provide a basis for a quantitative understanding of the enhancement mechanism of the fundamental parity violation in compound nuclei.

DOI： 10.1103/PhysRevC.107.054602

Displacement-noise-free interferometeric gravitational-wave detector using unidirectional neutrons with four speeds Open Access

Iwaguchi S., Nishizawa A., Chen Y., Kawasaki Y., Ishikawa T., Kitaguchi M., Yamagata Y., Wu B., Shimizu R., Umemura K., Tsuji K., Shimizu H., Michimura Y., Kawamura S.

Physics Letters, Section A: General, Atomic and Solid State Physics Vol. 458 2023.1

Publisher：Physics Letters, Section A: General, Atomic and Solid State Physics

For further gravitational wave (GW) detections, it is significant to invent a technique to reduce all kinds of mirror displacement noise dominant at low frequencies for ground-based detectors. The neutron displacement-noise-free interferometer (DFI) is one of the tools to reduce all the mirror displacement noise at lower frequencies. In this paper, we describe a further simplified configuration of a neutron DFI in terms of neutron incidence direction. In the new configuration, neutrons enter the interferometer with unidirectional incidence at four speeds as opposed to two bidirectional incidences of opposite directions at two speeds as reported previously. This simplification of the neutron DFI is significant for proof-of-principle experiments.

DOI： 10.1016/j.physleta.2022.128581

Status of the new muonic helium atom HFS measurements at J-PARC MUSE Open Access

Strasser P., Fukumura S., Ino T., Iwai R., Kanda S., Kawamura S., Kitaguchi M., Nishimura S., Oku T., Okudaira T., Seo S., Shimizu H.M., Shimizu K., Shimomura K., Tada H., Tanaka T., Torii H.A., Yamauchi H., Yasuda H.

Journal of Physics: Conference Series Vol. 2462 ( 1 ) 2023

Publisher：Journal of Physics: Conference Series

Measurements of the muonic helium atom hyperfine structure (HFS) are a sensitive tool to test the theory of three-body atomic systems and bound-state quantum electrodynamics (QED) and to determine fundamental constants of the negative muon magnetic moment and mass. The world's most intense pulsed negative muon beam at J-PARC MUSE brings an opportunity to improve previous measurements and test further CPT invariance by comparing the magnetic moments and masses of positive and negative muons. Test measurements at D-line are now in progress utilizing MuSEUM apparatus at zero field. The first results already have better accuracy than previous measurements in the 1980s. Also, the investigation of a new experimental approach to improve HFS measurements by repolarizing muonic helium atoms using a spin-exchange optical pumping (SEOP) technique was started. If successful, this would drastically improve the measurement accuracy.

DOI： 10.1088/1742-6596/2462/1/012023

Measurement of the transverse asymmetry of γ rays in the Sn 117 (n,γ) Sn 118 reaction Open Access

Endo S., Okudaira T., Abe R., Fujioka H., Hirota K., Kimura A., Kitaguchi M., Oku T., Sakai K., Shima T., Shimizu H.M., Takada S., Takahashi S., Yamamoto T., Yoshikawa H., Yoshioka T.

Physical Review C Vol. 106 ( 6 ) 2022.12

Publisher：Physical Review C

Largely enhanced parity-violating effects observed in compound resonances induced by epithermal neutrons are currently attributed to the mixing of parity-unfavored partial amplitudes in the entrance channel of the compound states. Furthermore, it is proposed that the same mechanism that enhances the parity violation also enhances the breaking of time-reversal invariance in the compound nucleus. The entrance-channel mixing induces energy-dependent spin-angular correlations of individual γ rays emitted from the compound nuclear state. For a detailed study of the mixing model, the γ-ray yield in the reaction of Sn117(n,γ)Sn118 was measured using a pulsed beam of polarized epithermal neutrons and Ge detectors. An angular dependence of asymmetric γ-ray yields for the orientation of the neutron polarization was observed.

DOI： 10.1103/PhysRevC.106.064601

Displacement-noise-free neutron interferometer for gravitational wave detection using a single Mach-Zehnder configuration Open Access

Iwaguchi S., Nishizawa A., Chen Y., Kawasaki Y., Kitaguchi M., Morimoto T., Ishikawa T., Wu B., Watanabe I., Shimizu R., Shimizu H., Michimura Y., Kawamura S.

Physics Letters, Section A: General, Atomic and Solid State Physics Vol. 441 2022.7

Publisher：Physics Letters, Section A: General, Atomic and Solid State Physics

The improvement of sensitivity to gravitational waves (GWs) at lower frequencies is still challenging on account of displacement noise. One of the solutions is the neutron displacement-noise-free interferometer (DFI). We focus on a simplification of the detector configuration by taking advantage of the ability to adjust the neutron speed depending on the configuration. The new configuration consists of two beamsplitters and two mirrors, which constitute a single Mach-Zehnder interferometer (MZI). It is simpler than the configuration with two MZIs in previous research. All displacement noise of mirrors and beamsplitters can be canceled in the frequency domain. This cancellation can be explained intuitively using a phasor diagram.

DOI： 10.1016/j.physleta.2022.128150

A novel nuclear emulsion detector for measurement of quantum states of ultracold neutrons in the Earth's gravitational field Open Access

Muto N., Abele H., Ariga T., Bosina J., Hino M., Hirota K., Ichikawa G., Jenke T., Kawahara H., Kawasaki S., Kitaguchi M., Micko J., Mishima K., Naganawa N., Nakamura M., Roccia S., Sato O., Sedmik R.I.P., Seki Y., Shimizu H.M., Tada S., Umemoto A.

Journal of Instrumentation Vol. 17 ( 7 ) 2022.7

Publisher：Journal of Instrumentation

Hypothetical short-range interactions could be detected by measuring the wavefunctions of gravitationally bound ultracold neutrons (UCNs) on a mirror in the Earth's gravitational field. Searches for them with higher sensitivity require detectors with higher spatial resolution. We developed and have been improving an UCN detector with a high spatial resolution, which consists of a Si substrate, a thin converter layer including 10B4C, and a layer of fine-grained nuclear emulsion. Its resolution was estimated to be less than 100 nm by fitting tracks of either 7Li nuclei or α-particles, which were created when neutrons interacted with the 10B4C layer. For actual measurements of the spatial distributions, the following two improvements were made. The first improvement was to establish a method to align microscopic images with high accuracy within a wide region of 65 mm × 0.2 mm. We created reference marks of 1 μm and 5 μm diameter with an interval of 50 μm and 500 μm, respectively, on the Si substrate by electron beam lithography and realized a position accuracy of less than 30 nm. The second improvement was to build a holder for the detector that could maintain the atmospheric pressure around the nuclear emulsion to utilize it under a vacuum during exposure to UCNs. The intrinsic resolution of the improved detector was estimated to be better than 0.56(8) μm by evaluating the blur of a transmission image of a gadolinium grating taken by cold neutrons. The evaluation included the precision of the gadolinium grating. A test exposure was conducted to obtain the spatial distribution of UCNs in the quantized states on a mirror in the Earth's gravitational field. The distribution was obtained, fitted with the theoretical curve, and turned out to be reasonable for UCNs in quantized states when we considered a blurring of 6.9 μm. The blurring was well explained as a result of neutron refraction due to the large surface roughness on the upstream side of the Si substrate. By using a double-side-polished Si substrate, a resolution of less than 0.56 μm is expected to be achieved for UCNs.

DOI： 10.1088/1748-0221/17/07/P07014

Neutron displacement noise-free interferometer for gravitational-wave detection Open Access

Nishizawa A., Iwaguchi S., Chen Y., Morimoto T., Ishikawa T., Wu B., Watanabe I., Kawasaki Y., Shimizu R., Shimizu H., Kitaguchi M., Michimura Y., Kawamura S.

Physical Review D Vol. 105 ( 12 ) 2022.6

Publisher：Physical Review D

An interferometer design that cancels all displacement noises of its test masses and maintains a gravitational-wave (GW) signal by combining multiple detector signals is called a displacement noise-free interferometer (DFI). The idea has been considered previously for a laser interferometer. However, a limitation of a laser DFI is that its sensitive frequency band is too high for astrophysical GW sources, ∼105 Hz even for a kilometer-sized interferometer. To circumvent this limitation, in this paper, we propose a neutron DFI, in which neutrons are used instead of light. Since neutrons have velocities much lower than the speed of light, the sensitive frequency band of a neutron DFI can be lowered down to ∼10-1 Hz. Therefore, a neutron DFI can be utilized for detecting GWs that are inaccessible by an ordinary laser interferometer on the ground.

DOI： 10.1103/PhysRevD.105.124017

Improvement of systematic uncertainties for the neutron lifetime experiment at J-PARC Open Access

Mogi T., Hasegawa T., Hirota K., Ichikawa G., Ieki S., Ino T., Iwashita Y., Kajiwara S., Kato Y., Kitaguchi M., Kitahara R., Koga J., Makise S., Matsuzaki S., Mishima K., Morikawa K., Nagakura N., Okabe H., Otono H., Seki Y., Sekiba D., Shima T., Shimizu H.E., Shimizu H.M., Sugisawa Y., Sumi N., Sumino H., Tanabe T., Tomita T., Uehara H., Yamada T., Yamashita S., Yano K., Yoshioka T.

Proceedings of Science Vol. 380 2022.5

Publisher：Proceedings of Science

The neutron lifetime is one of the important parameters for particle physics and astrophysics. There is a 4.6σ (9.5 s) discrepancy between the results of the two typical methods. To solve this discrepancy, a new neutron lifetime experiment with a different method is in progress at J-PARC, and this experiment published the first result in 2020 of 898 ± 10(stat.) + 15/−18(syst.) s. We have performed improvements to reduce systematic uncertainties towards 1 s accuracy. The methods to measure the amount of 3He injected and in the working gas have been upgraded, and a new model for the space charge effect in the Monte Carlo simulation has been implemented.

DOI： 10.22323/1.380.0458

Neutron lifetime experiment with pulsed cold neutrons at J-PARC Open Access

Ichikawa G., Fuwa Y., Hasegawa T., Hino M., Hirota K., Ino T., Iwashita Y., Kitaguchi M., Koga J., Matsuzaki S., Mishima K., Mogi T., Morikawa K., Okabe H., Otono H., Seki Y., Sekiba D., Shima T., Shimizu H., Shimizu H., Sumi N., Sumino H., Yamashita S., Yano K., Yoshioka T.

Proceedings of Science Vol. 380 2022.5

Publisher：Proceedings of Science

A free neutron decays in a lifetime of about 880 s. Although the neutron lifetime is an important parameter in modern physics, there is a 4.6σ (9.5 s) discrepancy between the experimental results of two typical methods: the beam method and the storage method. We are carrying out a new experimental method to measure the neutron lifetime using a pulsed neutron beam at J-PARC MLF BL05 to determine the cause of the discrepancy, whether overlooked systematic uncertainties or new physics. A review of our experiment including the first physics result with acquired data during 2014 - 2016 and the status using new neutron optics are presented here.

DOI： 10.22323/1.380.0457

Angular distribution of γ rays from the p -wave resonance of Sn 118 Open Access

Koga J., Takada S., Endo S., Fujioka H., Hirota K., Ishizaki K., Kimura A., Kitaguchi M., Niinomi Y., Okudaira T., Sakai K., Shima T., Shimizu H.M., Tani Y., Yamamoto T., Yoshikawa H., Yoshioka T.

Physical Review C Vol. 105 ( 5 ) 2022.5

Publisher：Physical Review C

The neutron energy-dependent angular distribution of γ rays from the Sn117(n,γ) reaction was measured with germanium detectors and a pulsed neutron beam. The angular distribution was clearly observed in γ-ray emissions with an energy of 9327 keV which corresponds to the transition from a neutron resonance of Sn117+n to the ground state of Sn118. The angular distribution causes an angular-dependent asymmetric resonance shape. An asymmetry ALH was defined as (NL-NH)/(NL+NH), where NL and NH are integrated values for lower- and higher-energy regions of a neutron resonance, respectively. We found that the ALH has the angular dependence of (Acosθγ+B), where θγ is the γ-ray emission angle with respect to the incident neutron momentum, with A=0.394±0.073 and B=0.118±0.029 in the 1.33 eV p-wave resonance.

DOI： 10.1103/PhysRevC.105.054615

A study on UV emission from clouds with Mini-EUSO Open Access

Golzio A., Battisti M., Bertaina M., Bolmgren K., Cambiè G., Casolino M., Cassardo C., Cremonini R., Ferrarese S., Fuglesang C., Manfrin M., Marcelli L., Piotrowski L., Shinozaki K., Abdellaoui G., Abe S., Adams J.H., Allard D., Alonso G., Anchordoqui L., Anzalone A., Arnone E., Asano K., Attallah R., Attoui H., Ave Pernas M., Bagheri M., Baláz J., Bakiri M., Barghini D., Bartocci S., Bayer J., Beldjilali B., Belenguer T., Belkhalfa N., Bellotti R., Belov A.A., Benmessai K., Bertone P.F., Biermann P.L., Bisconti F., Blaksley C., Blanc N., Blin-Bondil S., Bobik P., Bogomilov M., Bozzo E., Briz S., Bruno A., Caballero K.S., Cafagna F., Campana D., Capdevielle J.N., Capel F., Caramete A., Caramete L., Carlson P., Caruso R., Castellina A., Catalano O., Cellino A., Černý K., Chikawa M., Chiritoi G., Christl M.J., Colalillo R., Conti L., Cotto G., Crawford H.J., Creusot A., de Castro Gónzalez A., de la Taille C., del Peral L., Diaz Damian A., Diesing R., Dinaucourt P., Djakonow A., Djemil T., Ebersoldt A., Ebisuzaki T., Eliasson L., Eser J., Fenu F., Fernández-González S., Filippatos G., Finch W.I., Fornaro C., Fouka M., Franceschi A., Franchini S., Fujii T., Fukushima M., Galeotti P., García-Ortega E., Gardiol D., Garipov G.K., Gascón E., Gazda E., Genci J.

Proceedings of Science Vol. 395 2022.3

Publisher：Proceedings of Science

Mini-EUSO is the first mission of the JEM-EUSO program located on the International Space Station. One of the main goals of the mission is to provide valuable scientific data in view of future large missions devoted to study Ultra-High Energy Cosmic Rays (UHECRs) from space by exploiting the fluorescence emission generated by Extensive Air Showers (EAS) developing in the atmosphere. A space mission like Mini-EUSO experiences continuous changes in atmospheric conditions, including the cloud presence. The influence of clouds on space-based observation is, therefore, an important topic to investigate as it might alter the instantaneous exposure for EAS detection or deteriorate the quality of the EAS images with consequences on the reconstructed EAS parameters. For this purpose, JEM-EUSO is planning to have an IR camera and a lidar as part of its Atmospheric Monitoring System. At the same time, it would be extremely beneficial if the UV camera itself would be able to detect the presence of clouds, at least in some specific conditions. For this reason, we analyze a few case studies by comparing the pixel count rates from Mini-EUSO during orbits with the cloud cover (as cloud fraction). This quantity is retrieved from the Global Forecast System (GFS) model at different height levels over the Mini-EUSO trajectory. The results of this analysis are reported.

DOI： 10.22323/1.395.0208

UCIRC2: EUSO-SPB2’s Infrared Cloud Monitor Open Access

Diesing R., Bukowski A., Friedlander N., Miller A., Meyer S., Olinto A.V., Abdellaoui G., Abe S., Adams J.H., Ahriche A., Allard D., Alonso G., Anchordoqui L., Anzalone A., Arnone E., Asano K., Attallah R., Attoui H., Ave Pernas M., Bacholle S., Baláz J., Bakiri M., Barghini D., Bartocci S., Battisti M., Bayer J., Beldjilali B., Belenguer T., Belkhalfa N., Bellotti R., Belov A., Benmessai K., Bertaina M., Bertone P., Biermann P.L., Bisconti F., Blaksley C., Blanc N., Blin-Bondil S., Bobik P., Bogomilov M., Bozzo E., Briz S., Bruno A., Caballero K.S., Cafagna F., Cambié G., Campana D., Capdevielle J.N., Capel F., Caramete A., Caramete L., Carlson P., Caruso R., Casolino M., Cassardo C., Castellina A., Catalano O., Cellino A., Cerny K., Chikawa M., Chiritoi G., Christl M.J., Colalillo R., Conti L., Cotto G., Crawford H.J., Cremonini R., Creusot A., de Castro Gónzalez A., de la Taille C., del Peral L., Diaz Damian A., Djakonow A., Djemil T., Ebersoldt A., Ebisuzaki T., Engel R., Eliasson L., Eser J., Fenu F., Fernández-González S., Ferrarese S., Fillapatos G., Fornaro C., Fouka M., Franceschi A., Franchini S., Fuglesang C., Fujii T., Fukushima M., Galeotti P., García-Ortega E., Gardiol D., Garipov G., Gascón E., Genci J., Golzio A.

Proceedings of Science Vol. 395 2022.3

Publisher：Proceedings of Science

The second generation of the Extreme Universe Space Observatory on a Super Pressure Balloon (EUSO-SPB2) is a balloon instrument for the detection of ultra high energy cosmic rays (UHECRs) with energies above 1 EeV and very high energy neutrinos with energies above 10 PeV. EUSOSPB2 consists of two telescopes: a fluorescence telescope pointed downward for the detection of UHECRs and a Cherenkov telescope pointed towards the limb for the detection of tau lepton-induced showers produced by up-going tau neutrinos and background signals below the limb. Clouds inside the field of view of these telescopes reduce EUSO-SPB2’s geometric aperture, in particular that of the fluorescence telescope. For this reason, cloud coverage and cloud-top altitude within the field of view of the fluorescence telescope must be monitored throughout data-taking. The University of Chicago Infrared Camera (UCIRC2) will monitor these clouds using two infrared cameras with response centered at wavelengths 10 and 12 microns. By capturing images at wavelengths spanning the cloud thermal emission peak, UCIRC2 will measure cloud color-temperatures and thus cloud-top altitudes. In this contribution, we provide an overview of UCIRC2, including an update on its construction and a discussion of the techniques used to calibrate the instrument.

DOI： 10.22323/1.395.0214

Towards observations of nuclearites in Mini-EUSO Open Access

Abdellaoui G., Abe S., Adams J.H., Allard D., Alonso G., Anchordoqui L., Anzalone A., Arnone E., Asano K., Attallah R., Attoui H., Ave Pernas M., Bagheri M., Baláz J., Bakiri M., Barghini D., Bartocci S., Battisti M., Bayer J., Beldjilali B., Belenguer T., Belkhalfa N., Bellotti R., Belov A.A., Benmessai K., Bertaina M., Bertone P.F., Biermann P.L., Bisconti F., Blaksley C., Blanc N., Blin-Bondil S., Bobik P., Bogomilov M., Bolmgren K., Bozzo E., Briz S., Bruno A., Caballero K.S., Cafagna F., Cambié G., Campana D., Capdevielle J.N., Capel F., Caramete A., Caramete L., Carlson P., Caruso R., Casolino M., Cassardo C., Castellina A., Catalano O., Cellino A., Černý K., Chikawa M., Chiritoi G., Christl M.J., Colalillo R., Conti L., Cotto G., Crawford H.J., Cremonini R., Creusot A., de Castro Gónzalez A., de la Taille C., del Peral L., Diaz Damian A., Diesing R., Dinaucourt P., Djakonow A., Djemil T., Ebersoldt A., Ebisuzaki T., Eser J., Fenu F., Fernández-González S., Ferrarese S., Filippatos G., Finch W.I., Fornaro C., Fouka M., Franceschi A., Franchini S., Fuglesang C., Fujii T., Fukushima M., Galeotti P., García-Ortega E., Gardiol D., Garipov G.K., Gascón E., Gazda E., Genci J., Golzio A., González Alvarado C., Gorodetzky P., Green A., Guarino F., Guépin C., Guzmán A.

Proceedings of Science Vol. 395 2022.3

Publisher：Proceedings of Science

Mini-EUSO is a small orbital telescope with a field of view of 44◦ × 44◦, observing the night-time Earth mostly in 320-420 nm band. Its time resolution spanning from microseconds (triggered) to milliseconds (untriggered) and more than 300 × 300 km of the ground covered, already allowed it to register thousands of meteors. Such detections make the telescope a suitable tool in the search for hypothetical heavy compact objects, which would leave trails of light in the atmosphere due to their high density and speed. The most prominent example are the nuclearites – hypothetical lumps of strange quark matter that could be stabler and denser than the nuclear matter. In this paper, we show potential limits on the flux of nuclearites after collecting 42 hours of observations data.

DOI： 10.22323/1.395.0503

The Mini-EUSO telescope on board the International Space Station: Launch and first results Open Access

Casolino M., Barghini D., Battisti M., Belov A., Bertaina M., Bisconti F., Blaksley C., Bolmgren K., Cafagna F., Cambiè G., Capel F., Ebisuzaki T., Fenu F., Franceschi A., Fuglesang C., Golzio A., Gorodetzki P., Kajino F., Kasuga H., Klimov P., Kungel V., Manfrin M., Marcelli L., Marszał W., Miyamoto H., Mignone M., Napolitano T., Osteria G., Parizot E., Picozza P., Piotrowski L.W., Plebaniak Z., Prévôt G., Reali E., Ricci M., Sakaki N., Shinozaki K., Szabelski J., Takizawa Y., Wada S., Wiencke L., Abdellaoui G., Abe S., Adams J.H., Allard D., Alonso G., Anchordoqui L., Anzalone A., Arnone E., Asano K., Attallah R., Attoui H., Ave Pernas M., Bagheri M., Baláz J., Bakiri M., Bartocci S., Bayer J., Beldjilali B., Belenguer T., Belkhalfa N., Bellotti R., Benmessai K., Bertone P.F., Biermann P.L., Blanc N., Blin-Bondil S., Bobik P., Bogomilov M., Bozzo E., Briz S., Bruno A., Caballero K.S., Campana D., Capdevielle J.N., Caramete A., Caramete L., Carlson P., Caruso R., Cassardo C., Castellina A., Catalano O., Cellino A., Černý K., Chikawa M., Chiritoi G., Christl M.J., Colalillo R., Conti L., Cotto G., Crawford H.J., Cremonini R., Creusot A., de Castro Gónzalez A., de la Taille C., del Peral L., Diaz Damian A., Diesing R., Dinaucourt P.

Proceedings of Science Vol. 395 2022.3

Publisher：Proceedings of Science

Mini-EUSO is a telescope launched on board the International Space Station in 2019 and currently located in the Russian section of the station. Main scientific objectives of the mission are the search for nuclearites and Strange Quark Matter, the study of atmospheric phenomena such as Transient Luminous Events, meteors and meteoroids, the observation of sea bioluminescence and of artificial satellites and man-made space debris. It is also capable of observing Extensive Air Showers generated by Ultra-High Energy Cosmic Rays with an energy above 1021 eV and detect artificial showers generated with lasers from the ground. Mini-EUSO can map the night-time Earth in the UV range (290 - 430 nm), with a spatial resolution of about 6.3 km and a temporal resolution of 2.5 μs, observing our planet through a nadir-facing UV-transparent window in the Russian Zvezda module. The instrument, launched on 2019/08/22 from the Baikonur cosmodrome, is based on an optical system employing two Fresnel lenses and a focal surface composed of 36 Multi-Anode Photomultiplier tubes, 64 channels each, for a total of 2304 channels with single photon counting sensitivity and an overall field of view of 44◦. Mini-EUSO also contains two ancillary cameras to complement measurements in the near infrared and visible ranges. In this paper we describe the detector and present the various phenomena observed in the first year of operation.

DOI： 10.22323/1.395.0334

The Fluorescence Telescope on board EUSO-SPB2 for the detection of Ultra High Energy Cosmic Rays Open Access

Osteria G., Adams J., Battisti M., Belov A., Bertaina M., Bisconti F., Cafagna F., Campana D., Caruso R., Casolino M., Christi M., Ebisuzaki T., Eser J., Fenu F., Filippatos G., Fornaro C., Guarino F., Klimov P., Kungel V., Mackovjak S., Mese M., Miller M., Miyamoto H., Olinto A., Onel Y., Parizot E., Pech M., Perfetto F., Piotrowski L., Prevot G., Reardon P., Ricci M., Sarazin F., Scotti V., Shinozaki K., Shovanec P., Szabelski J., Takizawa Y., Valore L., Wiencke L., Abdellaoui G., Abe S., Adams J.H., Allard D., Alonso G., Anchordoqui L., Anzalone A., Arnone E., Asano K., Attallah R., Attoui H., Ave Pernas M., Bagheri M., Baláz J., Bakiri M., Barghini D., Bartocci S., Bayer J., Beldjilali B., Belenguer T., Belkhalfa N., Bellotti R., Benmessai K., Bertone P.F., Biermann P.L., Blaksley C., Blanc N., Blin-Bondil S., Bobik P., Bogomilov M., Bolmgren K., Bozzo E., Briz S., Bruno A., Caballero K.S., Cambié G., Capdevielle J.N., Capel F., Caramete A., Caramete L., Carlson P., Cassardo C., Castellina A., Catalano O., Cellino A., Černý K., Chikawa M., Chiritoi G., Christl M.J., Colalillo R., Conti L., Cotto G., Crawford H.J., Cremonini R., Creusot A., de Castro Gónzalez A., de la Taille C., del Peral L., Diaz Damian A.

Proceedings of Science Vol. 395 2022.3

Publisher：Proceedings of Science

The Fluorescence Telescope is one of the two telescopes on board the Extreme Universe Space Observatory on a Super Pressure Balloon II (EUSO-SPB2). EUSO-SPB2 is an ultra-long-duration balloon mission that aims at the detection of Ultra High Energy Cosmic Rays (UHECR) via the fluorescence technique (using a Fluorescence Telescope) and of Ultra High Energy (UHE) neutrinos via Cherenkov emission (using a Cherenkov Telescope). The mission is planned to fly in 2023 and is a precursor of the Probe of Extreme Multi-Messenger Astrophysics (POEMMA). The Fluorescence Telescope is a second generation instrument preceded by the telescopes flown on the EUSO-Balloon and EUSO-SPB1 missions. It features Schmidt optics and has a 1-meter diameter aperture. The focal surface of the telescope is equipped with a 6912-pixel Multi Anode Photo Multipliers (MAPMT) camera covering a 37.4 x 11.4 degree Field of Regard. Such a big Field of Regard, together with a flight target duration of up to 100 days, would allow, for the first time from suborbital altitudes, detection of UHECR fluorescence tracks. This contribution will provide an overview of the instrument including the current status of the telescope development.

DOI： 10.22323/1.395.0206

Study of the calibration method using the stars measured by the EUSO-TA telescope Open Access

Plebaniak Z., Przybylak M., Barghini D., Bertaina M., Bisconti F., Casolino M., Gardiol D., Lipiec R., Piotrowski L.W., Shinozaki K., Szabelski J., Abdellaoui G., Abe S., Adams J.H., Ahriche A., Allard D., Alonso G., Anchordoqui L., Anzalone A., Arnone E., Asano K., Attallah R., Attoui H., Ave Pernas M., Bacholle S., Baláz J., Bakiri M., Yashin I.V., Bartocci S., Battisti M., Bayer J., Beldjilali B., Belenguer T., Belkhalfa N., Bellotti R., Belov A., Benmessai K., Yonetoku D., Bertone P., Biermann P.L., Yoshida S., Blaksley C., Blanc N., Blin-Bondil S., Bobik P., Bogomilov M., Bozzo E., Briz S., Bruno A., Caballero K.S., Cafagna F., Cambie G., Campana D., Capdevielle J.N., Capel F., Caramete A., Caramete L., Carlson P., Caruso R., Yano H., Cassardo C., Castellina A., Catalano O., Cellino A., Cerny K., Chikawa M., Chiritoi G., Christl M.J., Colalillo R., Conti L., Cotto G., Crawford H.J., Cremonini R., Creusot A., de Castro Gónzalez A., de la Taille C., del Peral L., Diaz Damian A., Diesing R., Djakonow A., Djemil T., Ebersoldt A., Ebisuzaki T., Engel R., Eliasson L., Eser J., Fenu F., Fernández-González S., Ferrarese S., Fillapatos G., Fornaro C., Fouka M., Franceschi A., Franchini S., Fuglesang C., Fujii T., Fukushima M., Galeotti P., García-Ortega E.

Proceedings of Science Vol. 395 2022.3

Publisher：Proceedings of Science

EUSO-TA is a ground-based experiment, placed at Black Rock Mesa of the Telescope Array site as a part of the JEM-EUSO (Joint Experiment Missions for the Extreme Universe Space Observatory) program. The UV fluorescence imaging telescope with a field of view of about 10.6◦ x 10.6◦ consisting of 2304 pixels (36 Multi-Anode Photomultipliers, 64 pixels each) works with 2.5-microsecond time resolution. An experimental setup with two Fresnel lenses allows for measurements of Ultra High Energy Cosmic Rays in parallel with the TA experiment as well as the other sources like flashes of lightning, artificial signals from UV calibration lasers, meteors and stars. Stars increase counts on pixels while crossing the field of view as the point-like sources. In this work, we discuss the method for calibration of EUSO fluorescence detectors based on signals from stars registered by the EUSO-TA experiment during several campaigns. As the star position is known, the analysis of signals gives an opportunity to determine the pointing accuracy of the detector. This can be applied to space-borne or balloon-borne EUSO missions. We describe in details the method of the analysis which provides information about detector parameters like the shape of the point spread function and is the way to perform absolute calibration of EUSO cameras.

DOI： 10.22323/1.395.0240

Simulation studies for the Mini-EUSO detector Open Access

Miyamoto H., Fenu F., Barghini D., Battisti M., Belov A., Bertaina M., Bisconti F., Bonino R., Cambie G., Capel F., Casolino M., Churilo I., Ebisuzaki T., Fuglesang C., Golzio A., Gorodetzky P., Kajino F., Klimov P., Manfrin M., Marcelli L., Marszał W., Mignone M., Parizot E., Picozza P., Piotrowski L.W., Plebaniak Z., Prévôt G., Reali E., Ricci M., Sakaki N., Shinozaki K., Suino G., Szabelski J., Takizawa Y., Abdellaoui G., Abe S., Adams J.H., Allard D., Alonso G., Anchordoqui L., Anzalone A., Arnone E., Asano K., Attallah R., Attoui H., Ave Pernas M., Bagheri M., Baláz J., Bakiri M., Bartocci S., Bayer J., Beldjilali B., Belenguer T., Belkhalfa N., Bellotti R., Benmessai K., Bertone P.F., Biermann P.L., Blaksley C., Blanc N., Blin-Bondil S., Bobik P., Bogomilov M., Bolmgren K., Bozzo E., Briz S., Bruno A., Caballero K.S., Cafagna F., Campana D., Capdevielle J.N., Caramete A., Caramete L., Carlson P., Caruso R., Cassardo C., Castellina A., Catalano O., Cellino A., Černý K., Chikawa M., Chiritoi G., Christl M.J., Colalillo R., Conti L., Cotto G., Crawford H.J., Cremonini R., Creusot A., de Castro Gónzalez A., de la Taille C., del Peral L., Diaz Damian A., Diesing R., Dinaucourt P., Djakonow A., Djemil T., Ebersoldt A.

Proceedings of Science Vol. 395 2022.3

Publisher：Proceedings of Science

Mini-EUSO is a mission of the JEM-EUSO program flying onboard the International Space Station since August 2019. Since the first data acquisition in October 2019, more than 35 sessions have been performed for a total of 52 hours of observations. The detector has been observing Earth at night-time in the UV range and detected a wide variety of transient sources all of which have been modeled through Monte Carlo simulations. Mini-EUSO is also capable of detecting meteors and potentially space debris and we performed simulations for such events to estimate their impact on future missions for cosmic ray science from space. We show here examples of the simulation work done in this framework to analyze the Mini-EUSO data. The expected response of Mini-EUSO with respect to ultra high energy cosmic ray showers has been studied. The efficiency curve of Mini-EUSO as a function of primary energy has been estimated and the energy threshold for Cosmic Rays has been placed to be above 1021 eV. We compared the morphology of several transient events detected during the mission with cosmic ray simulations and excluded that they can be due to cosmic ray showers. To validate the energy threshold of the detector, a system of ground based flashers is being used for end-to-end calibration purposes. We therefore implemented a parameterization of such flashers into the JEM-EUSO simulation framework and studied the response of the detector with respect to such sources.

DOI： 10.22323/1.395.0334

Science and mission status of EUSO-SPB2 Open Access

Abdellaoui G., Abe S., Adams J.H., Allard D., Alonso G., Anchordoqui L., Anzalone A., Arnone E., Asano K., Attallah R., Attoui H., Ave Pernas M., Bagheri M., Baláz J., Bakiri M., Barghini D., Bartocci S., Battisti M., Bayer J., Beldjilali B., Belenguer T., Belkhalfa N., Bellotti R., Belov A.A., Benmessai K., Bertaina M., Bertone P.F., Biermann P.L., Bisconti F., Blaksley C., Blanc N., Blin-Bondil S., Bobik P., Bogomilov M., Bozzo E., Briz S., Bruno A., Caballero K.S., Cafagna F., Cambié G., Campana D., Capdevielle J.N., Capel F., Caramete A., Caramete L., Carlson P., Caruso R., Casolino M., Cassardo C., Castellina A., Catalano O., Cellino A., Černý K., Chikawa M., Chiritoi G., Christl M.J., Colalillo R., Conti L., Cotto G., Crawford H.J., Cremonini R., Creusot A., de Castro Gónzalez A., de la Taille C., del Peral L., Diaz Damian A., Diesing R., Dinaucourt P., Djakonow A., Djemil T., Ebersoldt A., Ebisuzaki T., Eliasson L., Eser J., Fenu F., Fernández-González S., Ferrarese S., Filippatos G., Finch W.I., Fornaro C., Fouka M., Franceschi A., Franchini S., Fuglesang C., Fujii T., Fukushima M., Galeotti P., García-Ortega E., Gardiol D., Garipov G.K., Gascón E., Gazda E., Genci J., Golzio A., González Alvarado C., Gorodetzky P., Green A., Guarino F., Guépin C., Guzmán A.

Proceedings of Science Vol. 395 2022.3

Publisher：Proceedings of Science

The Extreme Universe Space Observatory on a Super Pressure Balloon II (EUSO-SPB2) is a second generation stratospheric balloon instrument for the detection of Ultra High Energy Cosmic Rays (UHECRs, E > 1 EeV) via the fluorescence technique and of Very High Energy (VHE, E > 10 PeV) neutrinos via Cherenkov emission. EUSO-SPB2 is a pathfinder mission for instruments like the proposed Probe Of Extreme Multi-Messenger Astrophysics (POEMMA). The purpose of such a space-based observatory is to measure UHECRs and UHE neutrinos with high statistics and uniform exposure. EUSO-SPB2 is designed with two Schmidt telescopes, each optimized for their respective observational goals. The Fluorescence Telescope looks at the nadir to measure the fluorescence emission from UHECR-induced extensive air shower (EAS), while the Cherenkov Telescope is optimized for fast signals (∼10 ns) and points near the Earth's limb. This allows for the measurement of Cherenkov light from EAS caused by Earth skimming VHE neutrinos if pointed slightly below the limb or from UHECRs if observing slightly above. The expected launch date of EUSO-SPB2 is Spring 2023 from Wanaka, NZ with target duration of up to 100 days. Such a flight would provide thousands of VHECR Cherenkov signals in addition to tens of UHECR fluorescence tracks. Neither of these kinds of events have been observed from either orbital or suborbital altitudes before, making EUSO-SPB2 crucial to move forward towards a space-based instrument. It will also enhance the understanding of potential background signals for both detection techniques. This contribution will provide a short overview of the detector and the current status of the mission as well as its scientific goals.

DOI： 10.22323/1.395.0404

An overview of the JEM-EUSO program and results Open Access

Abdellaoui G., Abe S., Adams J.H., Allard D., Alonso G., Anchordoqui L., Anzalone A., Arnone E., Asano K., Attallah R., Attoui H., Ave Pernas M., Bagheri M., Baláz J., Bakiri M., Barghini D., Bartocci S., Battisti M., Bayer J., Beldjilali B., Belenguer T., Belkhalfa N., Bellotti R., Belov A.A., Benmessai K., Bertaina M., Bertone P.F., Biermann P.L., Bisconti F., Blaksley C., Blanc N., Blin-Bondil S., Bobik P., Bogomilov M., Bolmgren K., Bozzo E., Briz S., Bruno A., Caballero K.S., Cafagna F., Cambié G., Campana D., Capdevielle J.N., Capel F., Caramete A., Caramete L., Carlson P., Caruso R., Casolino M., Cassardo C., Castellina A., Catalano O., Cellino A., Černý K., Chikawa M., Chiritoi G., Christl M.J., Colalillo R., Conti L., Cotto G., Crawford H.J., Cremonini R., Creusot A., de Castro Gónzalez A., de la Taille C., del Peral L., Diaz Damian A., Diesing R., Dinaucourt P., Djakonow A., Djemil T., Ebersoldt A., Ebisuzaki T., Eser J., Fenu F., Fernández-González S., Ferrarese S., Filippatos G., Finch W.I., Fornaro C., Fouka M., Franceschi A., Franchini S., Fuglesang C., Fujii T., Fukushima M., Galeotti P., García-Ortega E., Gardiol D., Garipov G.K., Gascón E., Gazda E., Genci J., Golzio A., González Alvarado C., Gorodetzky P., Green A., Guarino F., Guépin C., Guzmán A.

Proceedings of Science Vol. 395 2022.3

Publisher：Proceedings of Science

The field of UHECRs (Ultra-High energy cosmic Rays) and the understanding of particle acceleration in the cosmos, as a key ingredient to the behaviour of the most powerful sources in the universe, is of outmost importance for astroparticle physics as well as for fundamental physics and will improve our general understanding of the universe. The current main goals are to identify sources of UHECRs and their composition. For this, increased statistics is required. A space-based detector for UHECR research has the advantage of a very large exposure and a uniform coverage of the celestial sphere. The aim of the JEM-EUSO program [1] is to bring the study of UHECRs to space. The principle of observation is based on the detection of UV light emitted by isotropic fluorescence of atmospheric nitrogen excited by the Extensive Air Showers (EAS) in the Earth's atmosphere and forward-beamed Cherenkov radiation reflected from the Earth's surface or dense cloud tops. In addition to the prime objective of UHECR studies, JEM-EUSO will do several secondary studies due to the instruments' unique capacity of detecting very weak UV-signals with extreme time-resolution around 1 μs: meteors, Transient Luminous Events (TLE), bioluminescence, maps of human generated UV-light, searches for Strange Quark Matter (SQM) and high-energy neutrinos, and more. The JEM-EUSO program includes several missions from ground (EUSO-TA [2]), from stratospheric balloons (EUSO-Balloon [3], EUSO-SPB1 [4], EUSO-SPB2 [5]), and from space (TUS [6], Mini-EUSO [7]) employing fluorescence detectors to demonstrate the UHECR observation from space and prepare the large size missions K-EUSO [8] and POEMMA [9]. A review of the current status of the program, the key results obtained so far by the different projects, and the perspectives for the near future are presented.

DOI： 10.22323/1.395.0406

Estimation of the exposure of the TUS space-based cosmic ray observatory Open Access

Fenu F., Shinozaki K., Zotov M., Bertaina M., Castellina A., Cellino A., Klimov P., Abdellaoui G., Abe S., Adams J.H., Allard D., Alonso G., Anchordoqui L., Anzalone A., Arnone E., Asano K., Attallah R., Attoui H., Ave Pernas M., Bagheri M., Baláz J., Bakiri M., Barghini D., Bartocci S., Battisti M., Bayer J., Beldjilali B., Belenguer T., Belkhalfa N., Bellotti R., Belov A.A., Benmessai K., Bertone P.F., Biermann P.L., Bisconti F., Blaksley C., Blanc N., Blin-Bondil S., Bobik P., Bogomilov M., Bolmgren K., Bozzo E., Briz S., Bruno A., Caballero K.S., Cafagna F., Cambié G., Campana D., Capdevielle J.N., Capel F., Caramete A., Caramete L., Carlson P., Caruso R., Casolino M., Cassardo C., Catalano O., Černý K., Chikawa M., Chiritoi G., Christl M.J., Colalillo R., Conti L., Cotto G., Crawford H.J., Cremonini R., Creusot A., de Castro Gónzalez A., de la Taille C., del Peral L., Diaz Damian A., Diesing R., Dinaucourt P., Djakonow A., Djemil T., Ebersoldt A., Ebisuzaki T., Eser J., Fenu F., Fernández-González S., Ferrarese S., Filippatos G., Finch W.I., Fornaro C., Fouka M., Franceschi A., Franchini S., Fuglesang C., Fujii T., Fukushima M., Galeotti P., García-Ortega E., Gardiol D., Garipov G.K., Gascón E., Gazda E., Genci J.

Proceedings of Science Vol. 395 2022.3

Publisher：Proceedings of Science

The TUS observatory was the first orbital detector aimed at the detection of ultra-high energy cosmic rays (UHECRs). It was launched on April 28, 2016, from the Vostochny cosmodrome in Russia and operated until December 2017. It collected ∼ 80, 000 events with a time resolution of 0.8 μs. A fundamental parameter to be determined for cosmic ray studies is the exposure of an experiment. This parameter is important to estimate the average expected event rate as a function of energy and to calculate the absolute flux in case of event detection. Here we present results of a study aimed to calculate the exposure that TUS accumulated during its mission. The role of clouds, detector dead time, artificial sources, storms, lightning discharges, airglow and moon phases is studied in detail. An exposure estimate with its geographical distribution is presented. We report on the applied technique and on the perspectives of this study in view of the future missions of the JEM-EUSO program.

DOI： 10.22323/1.395.0333

Measurement of UV light emission of the nighttime Earth by Mini-EUSO for space-based UHECR observations Open Access

Shinozaki K., Bolmgren K., Barghini D., Battisti M., Belov A., Bertaina M., Bisconti F., Cambiè G., Capel F., Casolino M., Fenu F., Golzio A., Klimov P., Kungel V., Marcelli L., Miyamoto H., Piotrowski L.W., Plebaniak Z., Przybylak M., Szabelski J., Sakaki N., Takizawa Y., Abdellaoui G., Abe S., Adams J.H., Allard D., Alonso G., Anchordoqui L., Anzalone A., Arnone E., Asano K., Attallah R., Attoui H., Ave Pernas M., Bagheri M., Baláz J., Bakiri M., Bartocci S., Bayer J., Beldjilali B., Belenguer T., Belkhalfa N., Bellotti R., Benmessai K., Bertone P.F., Biermann P.L., Blaksley C., Blanc N., Blin-Bondil S., Bobik P., Bogomilov M., Bozzo E., Briz S., Bruno A., Caballero K.S., Cafagna F., Campana D., Capdevielle J.N., Caramete A., Caramete L., Carlson P., Caruso R., Cassardo C., Castellina A., Catalano O., Cellino A., Černý K., Chikawa M., Chiritoi G., Christl M.J., Colalillo R., Conti L., Cotto G., Crawford H.J., Cremonini R., Creusot A., de Castro Gónzalez A., de la Taille C., del Peral L., Diaz Damian A., Diesing R., Dinaucourt P., Djakonow A., Djemil T., Ebersoldt A., Ebisuzaki T., Eser J., Fernández-González S., Ferrarese S., Filippatos G., Finch W.I., Fornaro C., Fouka M., Franceschi A., Franchini S., Fuglesang C., Fujii T., Fukushima M.

Proceedings of Science Vol. 395 2022.3

Publisher：Proceedings of Science

The JEM-EUSO (Joint Experiment Missions for Extreme Universe Space Observatory) program aims at the realization of the ultra-high energy cosmic ray (UHECR) observation using wide field of view fluorescence detectors in orbit. Ultra-violet (UV) light emission from the atmosphere such as airglow and anthropogenic light on the Earth’s surface are the main background for the space-based UHECR observations. The Mini-EUSO mission has been operated on the International Space Station (ISS) since 2019 which is the first space-based experiment for the program. The Mini-EUSO instrument consists of a 25 cm refractive optics and the photo-detector module with the 2304-pixel array of the multi-anode photomultiplier tubes. On the nadir-looking window of the ISS, the instrument is capable of continuously monitoring a ∼300 km × 300 km area. In the present work, we report the preliminary result of the measurement of the UV light in the nighttime Earth using the Mini-EUSO data downlinked to the ground. We mapped UV light distribution both locally and globally below the ISS obit. Simulations were also made to characterize the instrument response to diffuse background light. We discuss the impact of such light on space-based UHECR observations and the Mini-EUSO science objectives.

DOI： 10.22323/1.395.0385

Expected performance of the K-EUSO space-based observatory Open Access

Bianciotto M., Abdellaoui G., Abe S., Adams J.H., Allard D., Alonso G., Anchordoqui L., Anzalone A., Arnone E., Asano K., Attallah R., Attoui H., Ave Pernas M., Bagheri M., Baláz J., Bakiri M., Barghini D., Bartocci S., Battisti M., Bayer J., Beldjilali B., Belenguer T., Belkhalfa N., Bellotti R., Belov A.A., Benmessai K., Bertaina M., Bertone P.F., Biermann P.L., Bisconti F., Blaksley C., Blanc N., Blin-Bondil S., Bobik P., Bogomilov M., Bolmgren K., Bozzo E., Briz S., Bruno A., Caballero K.S., Cafagna F., Cambié G., Campana D., Capdevielle J.N., Capel F., Caramete A., Caramete L., Carlson P., Caruso R., Casolino M., Cassardo C., Castellina A., Catalano O., Cellino A., Černý K., Chikawa M., Chiritoi G., Christl M.J., Colalillo R., Conti L., Cotto G., Crawford H.J., Cremonini R., Creusot A., de Castro Gónzalez A., de la Taille C., del Peral L., Diaz Damian A., Diesing R., Dinaucourt P., Djakonow A., Djemil T., Ebersoldt A., Ebisuzaki T., Eser J., Fenu F., Fernández-González S., Ferrarese S., Filippatos G., Finch W.I., Fornaro C., Fouka M., Franceschi A., Franchini S., Fuglesang C., Fujii T., Fukushima M., Galeotti P., García-Ortega E., Gardiol D., Garipov G.K., Gascón E., Gazda E., Genci J., Golzio A., González Alvarado C., Gorodetzky P., Green A., Guarino F., Guépin C.

Proceedings of Science Vol. 395 2022.3

Publisher：Proceedings of Science

K-EUSO is a planned mission of the JEM-EUSO program for the study of ultra-high energy cosmic rays (UHECR) from space, to be deployed on the International Space Station. The K-EUSO observatory consists of a UV telescope with a wide field of view, which aims at the detection of fluorescence light emitted by extensive air showers (EAS) in the atmosphere. The EAS events will be sampled with a time resolution of 1-2.5 μs to reconstruct the entire shower profile with high precision. The detector consisting of ∼ 105 independent pixels will allow a spatial resolution of ∼700 m on ground. From a 400 km altitude, K-EUSO will achieve a large and full sky exposure to sample the highest energy range of the UHECR spectrum. In this contribution, we present estimates of the performance of the observatory: an estimation of the expected exposure and triggered event rate as a function of energy and the event reconstruction performance, including resolution of arrival directions and energy of UHECRs.

DOI： 10.22323/1.395.0409

Expected Performance of the EUSO-SPB2 Fluorescence Telescope Open Access

Heaton C., Abdellaoui G., Abe S., Adams J.H., Allard D., Alonso G., Anchordoqui L., Anzalone A., Arnone E., Asano K., Attallah R., Attoui H., Ave Pernas M., Bagheri M., Baláz J., Bakiri M., Barghini D., Bartocci S., Battisti M., Bayer J., Beldjilali B., Belenguer T., Belkhalfa N., Bellotti R., Belov A.A., Benmessai K., Bertaina M., Bertone P.F., Biermann P.L., Bisconti F., Blaksley C., Blanc N., Blin-Bondil S., Bobik P., Bogomilov M., Bolmgren K., Bozzo E., Briz S., Bruno A., Caballero K.S., Cafagna F., Cambié G., Campana D., Capdevielle J.N., Capel F., Caramete A., Caramete L., Carlson P., Caruso R., Casolino M., Cassardo C., Castellina A., Catalano O., Cellino A., Černý K., Chikawa M., Chiritoi G., Christl M.J., Colalillo R., Conti L., Cotto G., Crawford H.J., Cremonini R., Creusot A., de Castro Gónzalez A., de la Taille C., del Peral L., Diaz Damian A., Diesing R., Dinaucourt P., Djakonow A., Djemil T., Ebersoldt A., Ebisuzaki T., Eser J., Fenu F., Fernández-González S., Ferrarese S., Filippatos G., Finch W.I., Fornaro C., Fouka M., Franceschi A., Franchini S., Fuglesang C., Fujii T., Fukushima M., Galeotti P., García-Ortega E., Gardiol D., Garipov G.K., Gascón E., Gazda E., Genci J., Golzio A., González Alvarado C., Gorodetzky P., Green A., Guarino F., Guépin C.

Proceedings of Science Vol. 395 2022.3

Publisher：Proceedings of Science

The Extreme Universe Space Observatory Super Pressure Balloon 2 (EUSO-SPB2) is under development, and will prototype instrumentation for future satellite-based missions, including the Probe of Extreme Multi-Messenger Astrophysics (POEMMA). EUSO-SPB2 will consist of two telescopes. The first is a Cherenkov telescope (CT) being developed to identify and estimate the background sources for future below-the-limb very high energy (E>10 PeV) astrophysical neutrino observations, as well as above-the-limb cosmic ray induced signals (E>1 PeV). The second is a fluorescence telescope (FT) being developed for detection of Ultra High Energy Cosmic Rays (UHECRs). In preparation for the expected launch in 2023, extensive simulations tuned by preliminary laboratory measurements have been performed to understand the FT capabilities. The energy threshold has been estimated at 1018.2 eV, and results in a maximum detection rate at 1018.6 eV when taking into account the shape of the UHECR spectrum. In addition, onboard software has been developed based on the simulations as well as experience with previous EUSO missions. This includes a level 1 trigger to be run on the computationally limited flight hardware, as well as a deep learning based prioritization algorithm in order to accommodate the balloon's telemetry budget. These techniques could also be used later for future, space-based missions.

DOI： 10.22323/1.395.0405

EUSO@TurLab project in view of Mini-EUSO and EUSO-SPB2 missions Open Access

Miyamoto H., Bertaina M., Barghini D., Battisti M., Belov A., Bisconti F., Blin-Bondil S., Bolmgren K., Cambie G., Capel F., Caruso R., Casolino M., Churilo I., Contino G., Cotto G., Ebisuzaki T., Fenu F., Fuglesang C., Golzio A., Gorodetzky P., Kajino F., Klimov P., Manfrin M., Marcelli L., Marengo M., Marszał W., Mignone M., Parizot E., Picozza P., Piotrowski L.W., Plebaniak Z., Prévôt G., Reali E., Ricci M., Sakaki N., Shinozaki K., Suino G., Szabelski J., Takizawa Y., Youssef A., Abdellaoui G., Abe S., Adams J.H., Allard D., Alonso G., Anchordoqui L., Anzalone A., Arnone E., Asano K., Attallah R., Attoui H., Ave Pernas M., Bagheri M., Baláz J., Bakiri M., Bartocci S., Bayer J., Beldjilali B., Belenguer T., Belkhalfa N., Bellotti R., Benmessai K., Bertone P.F., Biermann P.L., Blaksley C., Blanc N., Bobik P., Bogomilov M., Bozzo E., Briz S., Bruno A., Caballero K.S., Cafagna F., Campana D., Capdevielle J.N., Caramete A., Caramete L., Carlson P., Cassardo C., Castellina A., Catalano O., Cellino A., Černý K., Chikawa M., Chiritoi G., Christl M.J., Colalillo R., Conti L., Crawford H.J.

Proceedings of Science Vol. 395 2022.3

Publisher：Proceedings of Science

The TurLab facility is a laboratory, equipped with a 5 m diameter and 1 m depth rotating tank, located in the fourth basement level of the Physics Department of the University of Turin. In the past years, we have used the facility to perform experiments related to the observations of Extreme Energy Cosmic Rays (EECRs) from space using the fluorescence technique for JEM-EUSO missions with the main objective to test the response of the trigger logic. In the missions, the diffuse night brightness and artificial and natural light sources can vary significantly in time and space in the Field of View (FoV) of the telescope. Therefore, it is essential to verify the detector performance and test the trigger logic under such an environment. By means of the tank rotation, a various terrestrial surface with the different optical characteristics such as ocean, land, forest, desert and clouds, as well as artificial and natural light sources such as city lights, lightnings and meteors passing by the detector FoV one after the other is reproduced. The fact that the tank located in a very dark place enables the tests under an optically controlled environment. Using the Mini-EUSO data taken since 2019 onboard the ISS, we will report on the comparison between TurLab and ISS measurements in view of future experiments at TurLab. Moreover, in the forthcoming months we will start testing the trigger logic of the EUSO-SPB2 mission. We report also on the plans and status for this purpose.

DOI： 10.22323/1.395.0318

EUSO-SPB2 Telescope Optics and Testing Open Access

Kungel V., Bachman R., Brewster J., Dawes M., Desiato J., Eser J., Finch W., Huelett L., Olinto A.V., Pace J., Pech M., Reardon P., Schovanek P., Wang C., Wiencke L., Abdellaoui G., Abe S., Adams J.H., Allard D., Alonso G., Anchordoqui L., Anzalone A., Arnone E., Asano K., Attallah R., Attoui H., Ave Pernas M., Bagheri M., Baláz J., Bakiri M., Barghini D., Bartocci S., Battisti M., Bayer J., Beldjilali B., Belenguer T., Belkhalfa N., Bellotti R., Belov A.A., Benmessai K., Bertaina M., Bertone P.F., Biermann P.L., Bisconti F., Blaksley C., Blanc N., Blin-Bondil S., Bobik P., Bogomilov M., Bolmgren K., Bozzo E., Briz S., Bruno A., Caballero K.S., Cafagna F., Cambié G., Campana D., Capdevielle J.N., Capel F., Caramete A., Caramete L., Carlson P., Caruso R., Casolino M., Cassardo C., Castellina A., Catalano O., Cellino A., Černý K., Chikawa M., Chiritoi G., Christl M.J., Colalillo R., Conti L., Cotto G., Crawford H.J., Cremonini R., Creusot A., de Castro Gónzalez A., de la Taille C., del Peral L., Diaz Damian A., Diesing R., Dinaucourt P., Djakonow A., Djemil T., Ebersoldt A., Ebisuzaki T., Fenu F., Fernández-González S., Ferrarese S., Filippatos G., Fornaro C., Fouka M., Franceschi A., Franchini S., Fuglesang C., Fujii T., Fukushima M., Galeotti P.

Proceedings of Science Vol. 395 2022.3

Publisher：Proceedings of Science

The Extreme Universe Space Observatory - Super Pressure Balloon (EUSO-SPB2) mission will fly two custom telescopes that feature Schmidt optics to measure Čerenkov- and fluorescence-emission of extensive air-showers from cosmic rays at the PeV and EeV-scale, and search for τ-neutrinos. Both telescopes have 1-meter diameter apertures and UV/UV-visible sensitivity. The Čerenkov telescope uses a bifocal mirror segment alignment, to distinguish between a direct cosmic ray that hits the camera versus the Čerenkov light from outside the telescope. Telescope integration and laboratory calibration will be performed in Colorado. To estimate the point spread function and efficiency of the integrated telescopes, a test beam system that delivers a 1-meter diameter parallel beam of light is being fabricated. End-to-end tests of the fully integrated instruments will be carried out in a field campaign at dark sites in the Utah desert using cosmic rays, stars, and artificial light sources. Laser tracks have long been used to characterize the performance of fluorescence detectors in the field. For EUSO-SPB2 an improvement in the method that includes a correction for aerosol attenuation is anticipated by using a bi-dynamic Lidar configuration in which both the laser and the telescope are steerable. We plan to conduct these field tests in Fall 2021 and Spring 2022 to accommodate the scheduled launch of EUSO-SPB2 in 2023 from Wanaka, New Zealand.

DOI： 10.22323/1.395.0412

Observation of ELVES with Mini-EUSO telescope on board the International Space Station Open Access

Marcelli L., Arnone E., Barghini M., Battisti M., Belov A., Bertaina M., Blaksley C., Bolmgren K., Cambiè G., Capel F., Casolino M., Ebisuzaki T., Fuglesang C., Gorodetzki P., Kajino F., Klimov P., Marszał W., Mignone M., Parizot E., Picozza P., Piotrowski L.W., Plebaniak Z., Prévôt G., Romoli G., Reali E., Ricci M., Sakaki N., Shinozaki K., Szabelski J., Takizawa Y., Abdellaoui G., Abe S., Adams J.H., Allard D., Alonso G., Anchordoqui L., Anzalone A., Asano K., Attallah R., Attoui H., Ave Pernas M., Bagheri M., Baláz J., Bakiri M., Barghini D., Bartocci S., Bayer J., Beldjilali B., Belenguer T., Belkhalfa N., Bellotti R., Benmessai K., Bertone P.F., Biermann P.L., Bisconti F., Blanc N., Blin-Bondil S., Bobik P., Bogomilov M., Bozzo E., Briz S., Bruno A., Caballero K.S., Cafagna F., Campana D., Capdevielle J.N., Caramete A., Caramete L., Carlson P., Caruso R., Cassardo C., Castellina A., Catalano O., Cellino A., Černý K., Chikawa M., Chiritoi G., Christl M.J., Colalillo R., Conti L., Cotto G., Crawford H.J., Cremonini R., Creusot A., de Castro Gónzalez A., de la Taille C., del Peral L., Diaz Damian A., Diesing R., Dinaucourt P., Djakonow A.

Proceedings of Science Vol. 395 2022.3

Publisher：Proceedings of Science

Mini-EUSO is a detector observing the Earth in the ultraviolet band from the International Space Station through a nadir-facing window, transparent to the UV radiation, in the Russian Zvezda module. Mini-EUSO main detector consists in an optical system with two Fresnel lenses and a focal surface composed of an array of 36 Hamamatsu Multi-Anode Photo-Multiplier tubes, for a total of 2304 pixels, with single photon counting sensitivity. The telescope also contains two ancillary cameras, in the near infrared and visible ranges, to complement measurements in these bandwidths. The instrument has a field of view of 44◦, a spatial resolution of about 6.3 km on the Earth surface and of about 4.7 km on the ionosphere. The telescope detects UV emissions of cosmic, atmospheric and terrestrial origin on different time scales, from a few µs upwards. On the fastest timescale of 2.5 µs, Mini-EUSO is able to observe atmospheric phenomena as Transient Luminous Events and in particular the ELVES, which take place when an electromagnetic wave generated by intra-cloud lightning interacts with the ionosphere, ionizing it and producing apparently superluminal expanding rings of several 100 km and lasting ' 100 µs. These highly energetic fast events have been observed to be produced in conjunction also with Terrestrial Gamma-Ray Flashes and therefore a detailed study of their characteristics (speed, radius, energy ...) is of crucial importance for the understanding of these phenomena. In this paper we present the observational capabilities of ELVE detection by Mini-EUSO and specifically the reconstruction and study of ELVE characteristics.

DOI： 10.22323/1.395.0367

Overview of the Mini-EUSO μs trigger logic performance Open Access

Battisti M., Barghini D., Belov A., Bertaina M., Bisconti F., Bolmgren K., Cambiè G., Capel F., Casolino M., Ebisuzaki T., Fenu F., Fuglesang C., Golzio A., Gorodetzki P., Kajino F., Klimov P., Manfrin M., Marcelli L., Marszał W., Miyamoto H., Parizot E., Picozza P., Piotrowski L.W., Plebaniak Z., Prévôt G., Reali E., Ricci M., Sakaki N., Shinozaki K., Szabelski J., Takizawa Y., Abdellaoui G., Abe S., Adams J.H., Ahriche A., Allard D., Alonso G., Anchordoqui L., Anzalone A., Arnone E., Asano K., Attallah R., Attoui H., Ave Pernas M., Bacholle S., Baláz J., Bakiri M., Batisti M., Bartocci S., Zuccaro Marchi A., Bayer J., Beldjilali B., Belenguer T., Belkhalfa N., Bellotti R., Zgura I.S., Benmessai K., Weigand Muñoz R., Bertone P., Biermann P.L., von Ballmoos P., Blaksley C., Blanc N., Blin-Bondil S., Bobik P., Bogomilov M., Bozzo E., Briz S., Bruno A., Caballero K.S., Cafagna F., Campana D., Capdevielle J.N., Zotov M.Y., Caramete A., Caramete L., Carlson P., Caruso R., Caslino M., Cassardo C., Castellina A., Catalano O., Cellino A., Cerny K., Chikawa M., Chiritoi G., Christl M.J., Colalillo R., Conti L., Cotto G., Crawford H.J., Cremonini R., Creusot A., de Castro Gónzalez A., de la Taille C., del Peral L., Diaz Damian A., Diesing R.

Proceedings of Science Vol. 395 2022.3

Publisher：Proceedings of Science

Mini-EUSO is the first detector of the JEM-EUSO program deployed on the ISS. It is a wide field of view telescope currently operating from a nadir-facing UV-transparent window on the ISS. It is based on an array of MAPMTs working in photon counting mode with a 2.5 μs time resolution. Among the different scientific objectives it searches for light signals with time duration compatible to those expected from Extensive Air Showers (EAS) generated by EECRs interacting in the atmosphere. Although the energy threshold for cosmic ray showers is above E > 1021eV, due the constraints given by the size of the UV-transparent window, the dedicated trigger logic has been capable of the detection of other interesting classes of events, like elves and ground flashers. An overview of the general performance of the trigger system is provided, with a particular focus on the identification of classes of events responsible for the triggers.

DOI： 10.22323/1.395.0306

Overview of Cherenkov Telescope on-board EUSO-SPB2 for the Detection of Very-High-Energy Neutrinos Open Access

Bagheri M., Bertone P., Fontane I., Gazda E., Judd E.G., Krizmanic J.F., Kuznetsov E.N., Miller M.J., Nachtman J., Onel Y., Nepomuk Otte A., Reardon P.J., Matamala O.R., Wiencke L., Abdellaoui G., Abe S., Adams J.H., Ahriche A., Allard D., Alonso G., Anchordoqui L., Anzalone A., Arnone E., Asano K., Attallah R., Attoui H., Ave Pernas M., Bacholle S., Baláz J., Bakiri M., Barghini D., Bartocci S., Battisti M., Bayer J., Beldjilali B., Belenguer T., Belkhalfa N., Bellotti R., Belov A., Benmessai K., Bertaina M., Yonetoku D., Biermann P.L., Bisconti F., Blaksley C., Blanc N., Blin-Bondil S., Bobik P., Bogomilov M., Bozzo E., Briz S., Bruno A., Caballero K.S., Cafagna F., Cambié G., Campana D., Capdevielle J.N., Capel F., Caramete A., Caramete L., Carlson P., Caruso R., Casolino M., Cassardo C., Castellina A., Catalano O., Cellino A., Cerny K., Chikawa M., Chiritoi G., Christl M.J., Colalillo R., Conti L., Cotto G., Crawford H.J., Cremonini R., Creusot A., de Castro Gónzalez A., de la Taille C., del Peral L., Diaz Damian A., Diesing R., Djakonow A., Djemil T., Ebersoldt A., Ebisuzaki T., Engel R., Eliasson L., Eser J., Fenu F., Fernández-González S., Ferrarese S., Fillapatos G., Fornaro C., Fouka M., Franceschi A., Franchini S., Fuglesang C., Fujii T.

Proceedings of Science Vol. 395 2022.3

Publisher：Proceedings of Science

We present the status of the development of a Cherenkov telescope to be flown on a long-duration balloon flight, the Extreme Universe Space Observatory Super Pressure Balloon 2 (EUSO-SPB2). EUSO-SPB2 is an approved NASA balloon mission that is planned to fly in 2023 and is a precursor of the Probe of Extreme Multi-Messenger Astrophysics (POEMMA), a candidate for an Astrophysics probe-class mission. The purpose of the Cherenkov telescope on-board EUSOSPB2 is to classify known and unknown sources of backgrounds for future space-based neutrino detectors. Furthermore, we will use the Earth-skimming technique to search for Very-High-Energy (VHE) tau neutrinos below the limb (E > 10 PeV) and observe air showers from cosmic rays above the limb. The 0.785 m2 Cherenkov telescope is equipped with a 512-pixel SiPM camera covering a 12.8° x 6.4° (Horizontal × Vertical) field of view. The camera signals are digitized with a 100 MS/s readout system. In this paper, we discuss the status of the telescope development, the camera integration, and simulation studies of the camera response.

DOI： 10.22323/1.395.1191

Measurement of nuclear spin relaxation time in lanthanum aluminate for development of polarized lanthanum target Open Access

Ishizaki K., Hotta H., Ide I., Iinuma M., Iwata T., Kitaguchi M., Kohri H., Miura D., Miyachi Y., Ohta T., Shimizu H.M., Yoshikawa H., Yosoi M.

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Vol. 1020 2021.12

Language：Japanese Publisher：Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

The nuclear spin–lattice relaxation time (T1) of lanthanum and aluminum nuclei in a single crystal of lanthanum aluminate doped with neodymium ions is studied to estimate the feasibility of the dynamically polarized lanthanum target applicable to beam experiments. The application of our interest is the study of fundamental discrete symmetries in the spin optics of epithermal neutrons. This study requires a highly flexible choice of the applied magnetic field for neutron spin control and favors longer T1 under lower magnetic field and at higher temperature. The T1 of 139La and 27Al was measured under magnetic fields of 0.5–2.5 T and at temperatures of 0.1–1.5 K and found widely distributed up to 100 h. The result suggests that the T1 can be as long as T1∼ 1 h at 0.1 K with a magnetic field of 0.1 T, which partially fulfills the requirement of the neutron beam experiment. Possible improvements to achieve a longer T1 are discussed.

DOI： 10.1016/j.nima.2021.165845

Pendellösung interferometry probes the neutron charge radius, lattice dynamics, and fifth forces Open Access

Heacock B., Fujiie T., Haun R.W., Henins A., Hirota K., Hosobata T., Huber M.G., Kitaguchi M., Pushin D.A., Shimizu H., Takeda M., Valdillez R., Yamagata Y., Young A.R.

Science Vol. 373 ( 6560 ) page： 1239 - 1243 2021.9

Language：Japanese Publisher：Science

Structure factors describe how incident radiation is scattered from materials such as silicon and germanium and characterize the physical interaction between the material and scattered particles. We used neutron Pendellösung interferometry to make precision measurements of the (220) and (400) neutron-silicon structure factors and achieved a factor-of-four improvement in the (111) structure factor uncertainty. These data provide measurements of the silicon Debye-Waller factor at room temperature and the mean square neutron charge radius 〈rn2 〉 ¼ -0:1101T0:0089 square femtometers. Combined with existing measurements of the Debye-Waller factor and charge radius, the measured structure factors also improve constraints on the strength of a Yukawa modification to gravity by an order of magnitude over the 20 picometer–to–10 nanometer length scale range.

DOI： 10.1126/science.abc2794

New high-sensitivity searches for neutrons converting into antineutrons and/or sterile neutrons at the HIBEAM/NNBAR experiment at the European Spallation Source Open Access

Addazi A., Anderson K., Ansell S., Babu K.S., Barrow J.L., Baxter D.V., Bentley P.M., Berezhiani Z., Bevilacqua R., Biondi R., Bohm C., Brooijmans G., Broussard L.J., Cederc ll J., Crawford C., Dev P.S.B., Dijulio D.D., Dolgov A.D., Dunne K., Fierlinger P., Fitzsimmons M.R., Fomin A., Frost M.J., Gardiner S., Gardner S., Galindo-Uribarri A., Geltenbort P., Girmohanta S., Golubev P., Golubeva E., Greene G.L., Greenshaw T., Gudkov V., Hall-Wilton R., Heilbronn L., Herrero-Garcia J., Holley A., Ichikawa G., Ito T.M., Iverson E., Johansson T., Jönsson L., Jwa Y.J., Kamyshkov Y., Kanaki K., Kearns E., Kokai Z., Kerbikov B., Kitaguchi M., Kittelmann T., Klinkby E., Kobakhidze A., Koerner L.W., Kopeliovich B., Kozela A., Kudryavtsev V., Kupsc A., Lee Y.T., Lindroos M., Makkinje J., Marquez J.I., Meirose B., Miller T.M., Milstead D., Mohapatra R.N., Morishima T., Muhrer G., Mumm H.P., Nagamoto K., Nepomuceno A., Nesti F., Nesvizhevsky V.V., Nilsson T., Oskarsson A., Paryev E., Pattie R.W., Penttil S., Perrey H., Pokotilovski Y.N., Potashnikovav I., Ramic K., Redding C., Richard J.M., Ries D., Rinaldi E., Rizzi N., Rossi N., Ruggles A., Rybolt B., Santoro V., Sarkar U., Saunders A., Senjanovic G., Serebrov A.P., Shimizu H.M., Shrock R., Silverstein S., Silvermyr D., Snow W.M., Takibayev A.

Journal of Physics G: Nuclear and Particle Physics Vol. 48 ( 7 ) 2021.7

Language：Japanese Publisher：Journal of Physics G: Nuclear and Particle Physics

The violation of baryon number, is an essential ingredient for the preferential creation of matter over antimatter needed to account for the observed baryon asymmetry in the Universe. However, such a process has yet to be experimentally observed. The HIBEAM/NNBAR program is a proposed two-stage experiment at the European Spallation Source to search for baryon number violation. The program will include high-sensitivity searches for processes that violate baryon number by one or two units: free neutron-antineutron oscillation via mixing, neutron-antineutron oscillation via regeneration from a sterile neutron state , and neutron disappearance (n → n′); the effective process of neutron regeneration is also possible. The program can be used to discover and characterize mixing in the neutron, antineutron and sterile neutron sectors. The experiment addresses topical open questions such as the origins of baryogenesis and the nature of dark matter, and is sensitive to scales of new physics substantially in excess of those available at colliders. A goal of the program is to open a discovery window to neutron conversion probabilities (sensitivities) by up to three orders of magnitude compared with previous searches. The opportunity to make such a leap in sensitivity tests should not be squandered. The experiment pulls together a diverse international team of physicists from the particle (collider and low energy) and nuclear physics communities, while also including specialists in neutronics and magnetics.

DOI： 10.1088/1361-6471/abf429

Energy-dependent angular distribution of individual γ rays in the la 139 (n,γ) la 140 ∗ reaction Open Access

Okudaira T., Endo S., Fujioka H., Hirota K., Ishizaki K., Kimura A., Kitaguchi M., Koga J., Niinomi Y., Sakai K., Shima T., Shimizu H.M., Takada S., Tani Y., Yamamoto T., Yoshikawa H., Yoshioka T.

Physical Review C Vol. 104 ( 1 ) 2021.6

Language：Japanese Publisher：Physical Review C

Neutron energy-dependent angular distributions were observed for individual γ rays from the 0.74 eV p-wave resonance of La139+n to several lower excited states of La140. The γ-ray signals were analyzed in a two-dimensional histogram of the γ-ray energy, measured with distributed germanium detectors, and neutron energy, determined with the time-of-flight of pulsed neutrons, to identify the neutron energy dependence of the angular distribution for each individual γ rays. The angular distribution was also found for a photopeak accompanied with a faint p-wave resonance component. Our results can be interpreted as interference between s- and p-wave amplitudes, which may be used to study discrete symmetries of fundamental interactions.

DOI： 10.1103/PhysRevC.104.014601

Measurement of γ rays from <sup>6</sup>LiF tile as an inner wall of a neutron-decay detector Open Access

Koga J., Ieki S., Kimura A., Kitaguchi M., Kitahara R., Mishima K., Nagakura N., Okudaira T., Otono H., Shimizu H.M., Sumi N., Takada S., Tomita T., Yamada T., Yoshioka T.

Journal of Instrumentation Vol. 16 ( 2 ) 2021.2

Language：Japanese Publisher：Journal of Instrumentation

A neutron lifetime measurement conducted at the Japan Proton Accelerator Research Complex (J-PARC) is counting the number of electrons from neutron decays with a time projection chamber (TPC). The γ rays produced in the TPC cause irreducible background events. To achieve the precise measurement, the inner walls of the TPC consist of 6Li-enriched lithium-fluoride (6LiF) tiles to suppress the amount of γ rays. In order to estimate the amount of γ rays from the 6LiF tile, prompt gamma ray analysis (PGA) measurements were performed using germanium detectors. We reconstructed the measured γ-ray energy spectrum using a Monte Carlo simulation with the stripping method. Comparing the measured spectrum with a simulated one, the number of γ rays emitted from the6LiF tile was (2.3+0.7-0.3) × 10-4 per incident neutron. This is 1.4+0.5-0.2 times the value assumed for a mole fraction of the 6LiF tile. We concluded that the amount of γ rays produced from the 6LiF tile is not more twice the originally assumed value.

DOI： 10.1088/1748-0221/16/02/P02001

Neutron Imaging Using a Fine-Grained Nuclear Emulsion Open Access

Hirota K., Ariga T., Hino M., Ichikawa G., Kawasaki S., Kitaguchi M., Mishima K., Muto N., Naganawa N., Shimizu H.M.

Journal of Imaging Vol. 7 ( 1 ) 2021.1

Language：Japanese Publisher：Journal of Imaging

A neutron detector using a fine-grained nuclear emulsion has a sub-micron spatial resolution and thus has potential to be applied as high-resolution neutron imaging. In this paper, we present two approaches to applying the emulsion detectors for neutron imaging. One is using a track analysis to derive the reaction points for high resolution. From an image obtained with a 9 µm pitch Gd grating with cold neutrons, periodic peak with a standard deviation of 1.3 µm was observed. The other is an approach without a track analysis for high-density irradiation. An internal structure of a crystal oscillator chip, with a scale of approximately 30 µm, was able to be observed after an image analysis.

DOI： 10.3390/jimaging7010004

Neutron lifetime measurement with pulsed cold neutrons Open Access

Hirota K., Ichikawa G., Ieki S., Ino T., Iwashita Y., Kitaguchi M., Kitahara R., Koga J., Mishima K., Mogi T., Morikawa K., Morishita A., Nagakura N., Oide H., Okabe H., Otono H., Seki Y., Sekiba D., Shima T., Shimizu H.M., Sumi N., Sumino H., Tomita T., Uehara H., Yamada T., Yamashita S., Yano K., Yokohashi M., Yoshioka T.

Progress of Theoretical and Experimental Physics Vol. 2020 ( 12 ) 2020.12

Language：Japanese Publisher：Progress of Theoretical and Experimental Physics

The neutron lifetime has been measured by comparing the decay rate with the reaction rate of 3He nuclei of a pulsed neutron beam from the spallation neutron source at the Japan Proton Accelerator Research Complex (J-PARC). The decay rate and the reaction rate were determined by simultaneously detecting electrons from the neutron decay and protons from the 3He(n,p)3H reaction using a gas chamber, the working gas of which contains diluted 3He. The measured neutron lifetime was 898 ± 10stat+15-18 sys s.

DOI： 10.1093/ptep/ptaa169

Proof-of-principle Experiment of <sup>4</sup>He Excimer Cluster Generation via Neutron-<sup>3</sup>He Absorption Reaction for Visualization of Velocity Fields in Superfluid <sup>4</sup>He

Matsushita T., Sonnenschein V., Iguchi T., Ito D., Kitaguchi M., Kiyanagi Y., Guo W., Saito Y., Shinohara T., Shimizu H.M., Suzuki S., Tsuji Y., Tomita H., Hayashida H., Hishida M., Hiroi K., Hirota K., Maruyama T., Waki S., Wada N.

hamon Vol. 30 ( 4 ) page： 192 - 196 2020.11

Language：Japanese Publisher：The Japanese Society for Neutron Science

<p>For visualization of flows in superfluid <sup>4</sup>He, an excited helium molecule (excimer) <sup>4</sup>He<sub>2</sub><sup>*</sup> is an ideally suitable flow tracer, because it has a molecular size with a minimum influence to flow, and follows only normal-component flow around 1K but only vortices below 0.5 K. However, to visualize flow fields in 3D, small clouds (clusters) of <sup>4</sup>He<sub>2</sub><sup>*</sup> are required, whose generation method has not been established. To generate such clusters, we proposed the use of neutron-<sup>3</sup>He absorption reaction. In the proof-of-principle experiments, we have confirmed the <sup>4</sup>He<sub>2</sub><sup>*</sup> generation, while the detail of clusters still remains undetermined. The concept, methods, progress, and present status are shown.</p>

DOI： 10.5611/hamon.30.4_192

A Multi-Center Contouring Study of Spinal Cord Comparing MRI and Myelo-CT Fusion

Tanaka H., Aoyama T., Shimizu H., Tachibana H., Koide Y., Miyauchi R., Wakabayashi K., Ooshima Y., Adachi S., Kozai Y., Kodaira T.

INTERNATIONAL JOURNAL OF RADIATION ONCOLOGY BIOLOGY PHYSICS Vol. 108 ( 3 ) page： E377 - E377 2020.11

Development and application of a <sup>3</sup>He Neutron Spin Filter at J-PARC Open Access

Okudaira T., Oku T., Ino T., Hayashida H., Kira H., Sakai K., Hiroi K., Takahashi S., Aizawa K., Endo H., Endo S., Hino M., Hirota K., Honda T., Ikeda K., Kakurai K., Kambara W., Kitaguchi M., Oda T., Ohshita H., Otomo T., Shimizu H.M., Shinohara T., Suzuki J., Yamamoto T.

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Vol. 977 2020.10

Language：Japanese Publisher：Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

We are developing a neutron polarizer with polarized 3He gas, referred to as a 3He spin filter, based on the Spin Exchange Optical Pumping (SEOP) for polarized neutron scattering experiments at Materials and Life Science Experimental Facility (MLF) of Japan Proton Accelerator Research Complex (J-PARC). A 3He gas-filling station was constructed at J-PARC, and several 3He cells with long spin relaxation times have been fabricated using the gas-filling station. A laboratory has been prepared in the MLF beam hall for polarizing 3He cells, and compact pumping systems with laser powers of 30 W and 110 W, which can be installed onto a neutron beamline, have been developed. A 3He polarization of 85% was achieved at a neutron beamline by using the pumping system with the 110 W laser. Recently, the first user experiment utilizing the 3He spin filter was conducted, and there have been several more since then. The development and utilization of 3He spin filters at MLF of J-PARC are reported.

DOI： 10.1016/j.nima.2020.164301

A candidate secular variation model for IGRF-13 based on MHD dynamo simulation and 4DEnVar data assimilation

Minami Takuto, Nakano Shin'ya, Lesur Vincent, Takahashi Futoshi, Matsushima Masaki, Shimizu Hisayoshi, Nakashima Ryosuke, Taniguchi Hinami, Toh Hiroaki

EARTH PLANETS AND SPACE Vol. 72 ( 1 ) 2020.9

Language：Japanese Publisher：Earth, Planets and Space

We have submitted a secular variation (SV) candidate model for the thirteenth generation of International Geomagnetic Reference Field model (IGRF-13) using a data assimilation scheme and a magnetohydrodynamic (MHD) dynamo simulation code. This is the first contribution to the IGRF community from research groups in Japan. A geomagnetic field model derived from magnetic observatory hourly means, and CHAMP and Swarm-A satellite data, has been used as input data to the assimilation scheme. We adopt an ensemble-based assimilation scheme, called four-dimensional ensemble-based variational method (4DEnVar), which linearizes outputs of MHD dynamo simulation with respect to the deviation from a dynamo state vector at an initial condition. The data vector for the assimilation consists of the poloidal scalar potential of the geomagnetic field at the core surface and flow velocity field slightly below the core surface. Dimensionless time of numerical geodynamo is adjusted to the actual time by comparison of secular variation time scales. For SV prediction, we first generate an ensemble of dynamo simulation results from a free dynamo run. We then assimilate the ensemble to the data with a 10-year assimilation window through iterations, and finally forecast future SV by the weighted sum of the future extension parts of the ensemble members. Hindcast of the method for the assimilation window from 2004.50 to 2014.25 confirms that the linear approximation holds for 10-year assimilation window with our iterative ensemble renewal method. We demonstrate that the forecast performance of our data assimilation and forecast scheme is comparable with that of IGRF-12 by comparing data misfits 4.5 years after the release epoch. For estimation of our IGRF-13SV candidate model, we set assimilation window from 2009.50 to 2019.50. We generate our final SV candidate model by linear fitting for the weighted sum of the ensemble MHD dynamo simulation members from 2019.50 to 2025.00. We derive errors of our SV candidate model by one standard deviation of SV histograms based on all the ensemble members.[Figure not available: see fulltext.].

DOI： 10.1186/s40623-020-01253-8

Fluorescence Imaging of He<sub>2</sub><i><sup>* </sup></i>Excimers generated by neutron and gamma irradiation of superfluid Helium using a cold neutron beamline at J-PARC / MLF

Sonnenschein Volker Thomas, Matsushita Taku, Tsuji Yoshiyuki, Guo Wei, Hayashida Hiroshi, Hirota Katsuya, Kosuke Hiroi, Maruyama Takumi, Hishida Mayu, Tomita Hideki, Ito Daisuke, Kitaguchi Masaaki, Kiyanagi Yoshiaki, Sou Suzuki, Saito Yasushi, Shimizu Hirohiko, Shinohara Takenao, Wada Nobuo

JSAP Annual Meetings Extended Abstracts Vol. 2020.2 ( 0 ) page： 287 - 287 2020.8

3-D Intrinsic and Scattering Seismic Attenuation Structures Beneath Kyushu, Japan

Shito A., Matsumoto S., Ohkura T., Shimizu H., Sakai S., Iio Y., Takahashi H., Yakiwara H., Watanabe T., Kosuga M., Okada T., Yoshimi M., Asano Y.

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH Vol. 125 ( 8 ) 2020.8

Language：Japanese Publisher：Journal of Geophysical Research: Solid Earth

The attenuation of seismic wave energy is caused by intrinsic absorption and scattering. The former involves the conversion of seismic wave energy to heat energy via internal friction due to the anelasticity of the medium, whereas the latter involves the scattering of seismic wave energy due to random elastic heterogeneities in the medium. Quantifying both intrinsic ((Formula presented.)) and scattering ((Formula presented.)) attenuation is therefore important for understanding the physical properties of the Earth's interior and predicting seismic wave propagation. Here we develop a new procedure to separately map three-dimensional (3-D) (Formula presented.) and (Formula presented.) structures. The path-averaged (Formula presented.) and (Formula presented.) values are obtained via an envelope-fitting approach that employs a multiple-scattering model. The path-averaged (Formula presented.) and (Formula presented.) structures are then mapped into 3-D space using a tomographic inversion technique based on sensitivity kernels, which are calculated from a Monte Carlo simulation of the radiative transfer equations. We apply this method to map the crustal structure beneath Kyushu, Japan, and obtain 3-D (Formula presented.) and (Formula presented.) structures for the 1–2, 2–4, and 4–8 Hz frequency bands. The spatial attenuation patterns are similar for each of the analyzed frequency bands, with the spatial variability in (Formula presented.) being more pronounced than that in (Formula presented.). The high- (Formula presented.) and (Formula presented.) regions correspond to the locations of active volcanoes. Conversely, the northern Kyushu area possesses low- (Formula presented.) and (Formula presented.) zones that correspond to low heat flow and Cretaceous granite, respectively. The overall (Formula presented.) and (Formula presented.) distributions correlate with thermal and geological structures, respectively.

DOI： 10.1029/2019JB018742

Neutron spin dynamics in polarized targets Open Access

Gudkov V., Shimizu H.M.

Physical Review C Vol. 102 ( 1 ) 2020.7

Language：Japanese Publisher：Physical Review C

We present the neutron elastic scattering amplitude for an arbitrarily polarized target in an irreducible spherical-tensor representation. The general approach for the description of neutron spin dynamics for propagation through the medium with an arbitrary polarization is discussed in relation to the search for a time-reversal invariance violation in neutron scattering.

DOI： 10.1103/PhysRevC.102.015503

Transverse asymmetry of γ rays from neutron-induced compound states of La 140 Open Access

Yamamoto T., Okudaira T., Endo S., Fujioka H., Hirota K., Ino T., Ishizaki K., Kimura A., Kitaguchi M., Koga J., Makise S., Niinomi Y., Oku T., Sakai K., Shima T., Shimizu H.M., Takada S., Tani Y., Yoshikawa H., Yoshioka T.

Physical Review C Vol. 101 ( 6 ) 2020.6

Language：Japanese Publisher：Physical Review C

An sp-mixing model, which describes a compound nuclear reaction by mixing partial waves, predicts a correlation term in this reaction. A detailed study of the sp-mixing model is required to study the feasibility of a new type of time reversal symmetry violation search experiment. The correlation term σn·(kn×kγ) in the La139(n - ,γ) reaction has been studied by measuring γ-ray and neutron energies utilizing epithermal polarized neutrons and germanium detectors. The transverse asymmetry for single γ-ray transition was measured to be 0.60±0.19 in the p-wave resonance.

DOI： 10.1103/PhysRevC.101.064624

An experimental setup for creating and imaging <sup>4</sup> He 2∗ excimer cluster tracers in superfluid helium-4 via neutron-<sup>3</sup>He absorption reaction

Sonnenschein V., Tsuji Y., Kokuryu S., Kubo W., Suzuki S., Tomita H., Kiyanagi Y., Iguchi T., Matsushita T., Wada N., Kitaguchi M., Shimizu H.M., Hirota K., Shinohara T., Hiroi K., Hayashida H., Guo W., Ito D., Saito Y.

Review of Scientific Instruments Vol. 91 ( 3 ) 2020.3

Language：Japanese Publisher：Review of Scientific Instruments

For the purpose of future visualization of the flow field in superfluid helium-4, clusters of the triplet state excimer 4He2* are generated along the micro-scale recoil tracks of the neutron-absorption reaction n + 3He → 3T + p. This reaction is induced by neutron irradiation of the 3He fraction contained in natural isotopic abundance liquid helium with neutron beams either from the Japan Proton Accelerator Research Complex, Materials and Life Science Experimental Facility (JPARC)/Materials and Life Science Experimental Facility or from the Kyoto University Institute for Integrated Radiation and Nuclear Science. These 4He2* clusters are expected to be ideal tracers of the normal-fluid component in superfluid helium with several advantageous properties. Evidence of the excimer generation is inferred by detection of laser induced fluorescence emitted from the 4He2* clusters excited by a purpose-built short pulse gain-switched titanium:sapphire (Ti:sa) laser operating at a wavelength of 905 nm. The setup and performance characteristics of the laser system including the Ti:sa and two continuous wave re-pumping lasers are described. Detection at the fluorescence wavelength of 640 nm is performed by using optical bandpass filtered photomultiplier tubes (PMT). Electrical noise in the PMT acquisition traces could successfully be suppressed by post-processing with a simple algorithm. Despite other laser-related backgrounds, the excimer was clearly identified by its fluorescence decay characteristics. Production of the excimer was found to be proportional to the neutron flux, adjusted via insertion of different collimators into the neutron beam. These observations suggest that the apparatus we constructed does function in the expected manner and, therefore, has the potential for groundbreaking turbulence research with superfluid helium.

DOI： 10.1063/1.5130919

New energy-degrading beamline for in-flight RI beams, OEDO

Michimasa S., Imai N., Dozono M., Hwang J.W., Yamada K., Ota S., Yoshida K., Yanagisawa Y., Kusaka K., Ohtake M., Matsushita M., Ahn D.S., Beliuskina O., Chiga N., Chikaato K., Fukuda N., Hayakawa S., Ideguchi E., Iribe K., Iwamoto C., Kawase S., Kawata K., Kitamura N., Masuoka S., Miyatake H., Nagae D., Nakajima R., Nakamura T., Nakano K., Omika S., Otsu H., Sakurai H., Schrock P., Shimizu H., Shimizu Y., Sumikama T., Sun X., Suzuki D., Suzuki H., Takaki M., Takechi M., Takeda H., Takeuchi S., Teranishi T., Tsunoda R., Wang H., Watanabe Y., Watanabe Y.X., Wimmer K., Yako K., Yamaguchi H., Yang L., Yoshida H., Shimoura S.

Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms Vol. 463 page： 143 - 147 2020.1

Publisher：Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

The Optimized Energy Degrading Optics (OEDO) beamline was constructed at RIBF to produce slowed-down, well-focused radioactive-isotope beams at 10–50 MeV/u, and began operation in June 2017. We examined the performance of the OEDO system by decelerating high-energy medium-mass radioactive ions. The main components of the OEDO beamline are two superconducting quadrupole triplet magnets and one radio-frequency deflector. This paper introduces the unique design of the ion optics of the beamline and describes the achieved performance of the beamline in the commissioning and following physics experiments. We will discuss the properties of energy-degraded beams produced by the OEDO beamline by comparison of simulations and the achieved performance.

DOI： 10.1016/j.nimb.2019.06.006

Neutron lifetime measurement at J-PARC/BL05: SFC upgrade

Okabe Hiroki, Hino Masahiro, Hirota Katsuya, Ieki Sei, Ino Takashi, Iwashita Yoshihisa, Kitaguchi Masaaki, Kitahara Ryunosuke, Koga Jun, Mishima Kenji, Morishita Aya, Nakano Yusuke, Nagakura Naoki, Oda Tatsuro, Oide Hideyuki, Otono Hidetoshi, Seki Yoshichika, Sekiba Daiichiro, Shima Tatsushi, Shimizu Hirohiko M., Sumi Naoyuki, Sumino Hirochika, Taketani Kaoru, Tomita Tatsuhiko, Uehara Hideaki, Yamada Takahito, Yamashita Satoru, Yokohashi Mami, Yoshioka Tamaki

Meeting Abstracts of the Physical Society of Japan Vol. 75.1 ( 0 ) page： 72 - 72 2020

Performance of a detector for new intermediate range interaction by means of neutron coherent scattering

Nakabe Rintaro, Shimizu Hirohiko, Hirota Katsuya, Kitaguchi Masaaki, Kondo Ryota, Shima Tatsushi, Hara Shuhei, Hiromoto Masayuki, Haddock Christopher C., Ino Takashi, Mishima Kenji, Snow W. Michael, Yoshioka Tamaki

Meeting Abstracts of the Physical Society of Japan Vol. 75.1 ( 0 ) page： 317 - 317 2020

Test of nanoparticle target for study of new intermediate range interaction by means of neutron coherent scattering

Hiromoto Masayuki, Haddock Christopher C., Nakabe Rintaro, Kondo Ryota, Hirota Katsuya, Ino Takashi, Kitaguchi Masaaki, Mishima Kenji, Shima Tatsushi, Shimizu Hirohiko M., Snow W. Michael, Yoshioka Tamaki, Hara Shuhei

Meeting Abstracts of the Physical Society of Japan Vol. 75.1 ( 0 ) page： 316 - 316 2020

Unknown Interaction Search with Neutron Diffraction

Fujiie T., Shimizu H. M., Kitaguchi M., Yamagata Y., Hosobata T., Takeda M., Young Albert, Valdillez Robert, Heacock Benjamin, Huber Michael

Meeting Abstracts of the Physical Society of Japan Vol. 75.1 ( 0 ) page： 74 - 74 2020

Measurement of spin rotation by the inner electric field of a crystal for nEDM search experiment

Itoh Shigeyasu, Fukumura Seiso, Hishida Mayu, Kitaguchi Masaaki, Shimizu Hirohiko M.

Meeting Abstracts of the Physical Society of Japan Vol. 75.1 ( 0 ) page： 275 - 275 2020

Development of Pulsed Neutron Interferometer

Yamamoto Nana, Kitaguchi Masaaki, Shimizu Hirohiko, Seki Yoshichika, Mishima Kenji

Meeting Abstracts of the Physical Society of Japan Vol. 75.1 ( 0 ) page： 318 - 318 2020

The progress of polarized target study for the search of T-violation in the neutron resonant capture in 2019

Hotta H., Ishizaki K., Ide I., Shimizu H. M., Kitaguchi M., Iinuma M., Kohri H., Yosoi M., Yoshikawa H., Ishimoto S.

Meeting Abstracts of the Physical Society of Japan Vol. 75.1 ( 0 ) page： 335 - 335 2020

Development of nuclear polarized target for NOPTREX experiments --Measurement of spin-lattice relaxation in LaAlO<sub>3</sub>--

Ide I., Ishizaki K., Shimizu H. M., Kitaguchi M., Iinuma M., Kohri H., Yosoi M., Yoshikawa H., Miyachi Y., Miura D., Ishimoto S.

Meeting Abstracts of the Physical Society of Japan Vol. 75.1 ( 0 ) page： 311 - 311 2020

Report of the MTV experiment 3

Ozaki S., Kajihara T., Kawamura H., Kitaguchi M., Goto F., Sakamoto Y., Shimizu H. M., Shimizu Y., Takenaka R., Tanaka S., Tanuma R., Tamura K., Totsuka Y., Nakaya Y., Baba H., Masuda H., Yamawaki Y., Yokohashi M., Yoshida T., Watanabe E., Behr J. A., Pearson M., Levy P., Murata J.

Meeting Abstracts of the Physical Society of Japan Vol. 75.1 ( 0 ) page： 280 - 280 2020

Report of the MTV experiment 2

Goto F., Ozaki S., Kajihara T., Kawamura H., Kitaguchi M., Sakamoto Y., Shimizu H. M., Shimizu Y., Takenaka R., Tanaka S., Tanuma R., Tamura K., Totsuka Y., Nakaya Y., Baba H., Masuda H., Murata J., Yamawaki Y., Yokohashi M., Watanabe E., Behr John A, Pearson Matthew, Levy Phil

Meeting Abstracts of the Physical Society of Japan Vol. 75.1 ( 0 ) page： 279 - 279 2020

Report of the MTV experiment 1

Tamura K., Ozaki S., Kajihara T., Kawamura H., Kitaguchi M., Goto F., Sakamoto Y., Shimizu H. M., Shimizu Y., Takenaka R., Tanaka S., Tanuma R., Totsuka Y., Nakaya Y., Baba H., Masuda H., Murata J., Yamawaki Y., Yokohashi M., Watanabe E., Behr John A, Pearson Matthew, Levy Phil

Meeting Abstracts of the Physical Society of Japan Vol. 75.1 ( 0 ) page： 278 - 278 2020

Neutron lifetime measurement at J-PARC/BL05: Estimation of background and systematic errors

ICHIKAWA Go, HIROTA Katsuya, IEKI Sei, INO Takashi, IWASHITA Yoshihisa, KAJIWARA Shogo, KATO Yu, KITAGUCHI Masaaki, KITAHARA Ryunosuke, KOGA Jun, MAKISE So, MISHIMA Kenji, MOGI Takanori, MORIKAWA Koki, MORISHITA Aya, NAGAKURA Naoki, NAKANO Yusuke, OIDE Hideyuki, OKABE Hiroki, OTONO Hidetoshi, SEKI Yoshichika, SEKIBA Daiichiro, SHIMA Tatsushi, SHIMIZU Hirohiko, SUGISAWA Yuki, SUMI Naoyuki, SUMINO Hirochika, TAKETANI Kaoru, TANABE Tomohiko, TOMITA Tatsuhiko, UEHARA Hideaki, YAMADA Takahito, YAMASHITA Satoru, YANO Kodai, YOKOHASHI Mami, YOSHIOKA Tamaki

Meeting Abstracts of the Physical Society of Japan Vol. 75.1 ( 0 ) page： 70 - 70 2020

The progress of polarized target study for the search of T-violation in the neutron resonant capture in 2019

Ishizaki K., Iinuma M., Ikeda Y., Ikegami H., Ishiguro R., Ishimoto S., Ide I., Ino T., Iwata T., Uesaka T., Otomo T., Oku T., Kanda H., Kitaguchi M., Kohri H., Shima T., Shimizu H. M., Takahashi D., Takahashi Y., Fujita M., Hotta D., matsushita T., Miura D., Miyachi Y., Yoshikawa H., Yosoi M., Wada N., NOPTREX collaboration

Meeting Abstracts of the Physical Society of Japan Vol. 75.1 ( 0 ) page： 310 - 310 2020

Measurement of the inner electric field of a crystals for neutron EDM measurement using crystal diffraction

Hishida Mayu, Itoh Shigeyasu, Fukumura Seiso, Kitaguchi Masaaki, Shimizu Hirohiko

Meeting Abstracts of the Physical Society of Japan Vol. 75.1 ( 0 ) page： 276 - 276 2020

Searching for Lorentz Violation in Weak Interaction

Takenaka R., Ozaki S., Kajihara T., Kitaguchi M., Goto F., Shimizu H. M., Shimizu Y., Tamura K., Masuda H., Yamawaki Y., Watanabe E., Murata J.

Meeting Abstracts of the Physical Society of Japan Vol. 75.1 ( 0 ) page： 313 - 313 2020

Development of the Model Describing Neutron Coherent Scattering by Extra-dimensional Gravity

Kondo Ryota, Hiromoto Masayuki, Hori Taichi, Haddock Christopher C., Oi Noriko, Hirota Katsuya, Ino Takashi, Kitaguchi Masaaki, Mishima Kenji, Shima Tatsushi, Shimizu Hirohiko M., Snow W. Michael, Hara Shuhei, Yoshioka Tamaki

Meeting Abstracts of the Physical Society of Japan Vol. 75.1 ( 0 ) page： 315 - 315 2020

Neutron lifetime measurement at J-PARC/BL05: Estimation of content rate of <sup>3</sup>He in TPC operating gas

MORIKAWA Koki, HIROTA Katsuya, ICHIKAWA Go, IEKI Sei, INO Takashi, IWASHITA Yoshihisa, KAJIWARA Shogo, KATO Yu, KITAGUCHI Masaaki, KITAHARA Ryunosuke, KOGA Jun, MAKISE So, MISHIMA Kenji, MOGI Takanori, MORISHITA Aya, NAGAKURA Naoki, NAKANO Yusuke, OIDE Hideyuki, OKABE Hiroki, OTONO Hidetoshi, SEKI Yoshichika, SEKIBA Daiichiro, SHIMA Tatsushi, SHIMIZU Hirohiko, SUGISAWA Yuki, SUMI Naoyuki, SUMINO Hirochika, TAKETANI Kaoru, TANABE Tomohiko, TOMITA Tatsuhiko, UEHARA Hideaki, YAMADA Takahito, YAMASHITA Satoru, YANO Kodai, YOKOHASHI Mami, YOSHIOKA Tamaki

Meeting Abstracts of the Physical Society of Japan Vol. 75.1 ( 0 ) page： 71 - 71 2020

Measurement of the total neutron-scattering cross-section ratios of noble gases of natural isotopic composition using a pulsed neutron beam Open Access

Haddock C.C., Hiromoto M., Hirota K., Ino T., Kitaguchi M., Mishima K., Oi N., Shima T., Shimizu H.M., Snow W.M., Yoshioka T.

Physical Review C Vol. 100 ( 6 ) 2019.12

Language：Japanese Publisher：Physical Review C

Precision measurements of slow neutron cross sections with atoms have several scientific applications. In particular, the n-He4 s-wave scattering length is important to know both for helping to constrain the nuclear three-body interaction and for the proper interpretation of several ongoing slow neutron experiments searching for other types of neutron-atom interactions. We present new measurements of the ratios of the neutron differential scattering cross sections of the noble gases He, Ar, Kr, and Xe to Ne. All gases used were of natural isotopic abundance. These measurements were performed using a recently developed neutron-scattering apparatus for gas samples located on a pulsed slow neutron beamline which was designed to search for possible exotic neutron-atom interactions and employs both neutron time of flight information and a position-sensitive neutron detector for scattering event reconstruction. We found agreement with the literature values of scattering cross sections inferred from Ar/Ne, Kr/Ne, and Xe/Ne differential cross-section ratios over the q range of 1-7 nm-1. However, for the case of He/Ne we find that the cross section inferred differs by 11.3% (7.6σ) from previously reported values inferred from neutron phase-shift measurements, but is in reasonable agreement with values from other measurements. The very large discrepancy in the He/Ne ratio calls for a new precision measurement of the n-He4 scattering length using neutron interferometry.

DOI： 10.1103/PhysRevC.100.064002

Concentration of Neutron Velocity for High-Density Ultra-Cold Neutrons

Kitaguchi Masaaki, Shimizu Hirohiko M., Iwashita Yoshihisa

Journal of the Particle Accelerator Society of Japan Vol. 16 ( 3 ) page： 161 - 166 2019.10

Language：Japanese Publisher：Particle Accelerator Society of Japan

<p>Accelerator technique for neutrons is discussed in this article. In the case of pulsed neutrons, the velocity is well-defined as a function of their arrival time. Electromagnetic neutron accelerator/decelerator synchronized with the neutron time-of-flight is capable of selectively changing the neutron velocity and concentrating the velocity distribution. Possible enhancement of the neutron intensity at a specific neutron velocity is calculated by using numerical simulations. This technique, for example, can be applied to efficient conversion of ultra-cold neutrons with superfluid helium.</p>

DOI： 10.50868/pasj.16.3_161

Improved accuracy in the determination of the thermal cross section of <sup>14</sup>N(n, p) <sup>14</sup>C for neutron lifetime measurement Open Access

Kitahara R., Hirota K., Ieki S., Ino T., Iwashita Y., Kitaguchi M., Koga J., Mishima K., Morishita A., Nagakura N., Oide H., Otono H., Seki Y., Sekiba D., Shima T., Shimizu H.M., Sumi N., Sumino H., Taketani K., Tomita T., Yamada T., Yamashita S., Yokohashi M., Yoshioka T.

Progress of Theoretical and Experimental Physics Vol. 2019 ( 9 ) 2019.9

Language：Japanese Publisher：Progress of Theoretical and Experimental Physics

In a neutron lifetime measurement at the Japan Proton Accelerator Complex, the neutron lifetime is calculated from the neutron decay rate and the incident neutron flux. The flux is obtained by counting the protons emitted from the neutron absorption reaction of 3He gas, which is diluted in a mixture of working gas in a detector. Hence, it is crucial to determine the amount of 3He in the mixture. In order to improve the accuracy of the number density of the 3He nuclei, we have suggested using the 14N(n, p)14C reaction as a reference because this reaction involves similar kinetic energy to the 3He(n,p)3 H reaction and a smaller reaction cross section to introduce reasonable large partial pressure. The uncertainty of the recommended value of the cross section, however, is not satisfied with our requirement. In this paper we report the most accurate experimental value of the cross section of the 14N(n,p)14C reaction at a neutron velocity of 2200 m s-1, measured relative to the 3He(n,p)3H reaction. The result was 1.868 \pm 0.003 (stat.) ± 0.006 (sys.) b. Additionally, the cross section of the 17O(n,α)14C reaction at the neutron velocity is also redetermined as 249 ± 6 mb.

DOI： 10.1093/ptep/ptz096

Ultra-violet imaging of the night-time earth by EUSO-Balloon towards space-based ultra-high energy cosmic ray observations Open Access

Abdellaoui G., Abe S., Adams J. H. Jr., Ahriche A., Allard D., Allen L., Alonso G., Anchordoqui L., Anzalone A., Arai Y., Asano K., Attallah R., Attoui H., Ave Pernas M., Bacholle S., Bakiri M., Baragatti P., Barrillon P., Bartocci S., Bayer J., Beldjilali B., Belenguer T., Belkhalfa N., Bellotti R., Belov A., Belov K., Benmessai K., Bertaina M., Biermann P. L., Biktemerova S., Bisconti F., Blanc N., Blecki J., Blin-Bondil S., Bobik P., Bogomilov M., Bozzo E., Briz S., Bruno A., Caballero K. S., Cafagna F., Campana D., Capdevielle J-N, Capel F., Caramete A., Caramete L., Carlson P., Caruso R., Casolino M., Cassardo C., Castellina A., Catalano C., Catalano O., Cellino A., Chikawa M., Chiritoi G., Christl M. J., Connaughton V, Conti L., Cordero G., Cotto G., Crawford H. J., Cremonini R., Csorna S., Cummings A., Dagoret-Campagne S., de Castro A. J., De Donato C., de la Taille C., De Santis C., del Peral L., Di Martino M., Damian A. Diaz, Djemil T., Dutan I, Ebersoldt A., Ebisuzaki T., Engel R., Eser J., Fenu F., Fernandez-Gonzalez S., Ferrarese S., Flamini M., Fornaro C., Fouka M., Franceschi A., Franchini S., Fuglesang C., Fujii T., Fujimoto J., Fukushima M., Galeotti P., Garcia-Ortega E., Garipov G., Gascon E., Genci J., Giraudo G., Gonzalez Alvarado C., Gorodetzky P., Greg R., Guarino F., Guzman A., Hachisu Y., Haiduc M., Harlov B., Haungs A., Hernandez Carretero J., Hidber Cruz W., Ikeda D., Inoue N., Inoue S., Isgro F., Itow Y., Jammer T., Jeong S., Joven E., Judd E. G., Jung A., Jochum J., Kajino F., Kajino T., Kalli S., Kaneko I, Karadzhov Y., Karczmarczyk J., Katahira K., Kawai K., Kawasaki Y., Kedadra A., Khales H., Khrenov B. A., Kim Jeong-Sook, Kim Soon-Wook, Kleifges M., Klimov P. A., Kolev D., Krantz H., Kreykenbohm I, Krizmanic J. F., Kudela K., Kurihara Y., Kusenko A., Kuznetsov E., La Barbera A., Lachaud C., Lahmar H., Lakhdari F., Larsson O., Lee J., Licandro J., Lopez Campano L., Lopez F., Maccarone M. C., Mackovjak S., Mahdi M., Maravilla D., Marcelli L., Marcos J. L., Marini A., Marszal W., Martens K., Martin Y., Martinez O., Martucci M., Masciantonio G., Mase K., Mastafa M., Matev R., Matthews J. N., Mebarki N., Medina-Tanco G., Mendoza M. A., Menshikov A., Merino A., Meseguer J., Meyer S. S., Mimouni J., Miyamoto H., Mizumoto Y., Monaco A., Morales de los Rios J. A., Moretto C., Nagataki S., Naitamor S., Napolitano T., Nava R., Neronov A., Nomoto K., Nonaka T., Ogawa T., Ogio S., Ohmori H., Olinto A. V, Orleanski P., Osteria G., Pagliaro A., Painter W., Panasyuk M. I, Panico B., Parizot E., Park I. H., Pastircak B., Patzak T., Paul T., Perez-Grande I, Perfetto F., Peter T., Picozza P., Pindado S., Piotrowski L. W., Piraino S., Placidi L., Plebaniak Z., Pliego S., Pollini A., Polonsky Z., Popescu E. M., Prat P., Prevot G., Prieto H., Puehlhofer G., Putis M., Rabanal J., Radu A. A., Reyes M., Rezazadeh M., Ricci M., Rodriguez Frias M. D., Ronga F., Roudil G., Rusinov I, Rybczynski M., Sabau M. D., Saez Cano G., Sagawa H., Sahnoune Z., Saito A., Sakaki N., Salazar H., Sanchez Balanzar J. C., Sanchez J. L., Santangelo A., Sanz-Andres A., Sanz Palomino M., Saprykin O., Sarazin F., Sato M., Schanz T., Schieler H., Scotti V, Selmane S., Semikoz D., Serra M., Sharakin S., Shimizu H. M., Shinozaki K., Shirahama T., Spataro B., Stan I, Sugiyama T., Supanitsky D., Suzuki M., Szabelska B., Szabelski J., Tajima N., Tajima T., Takahashi Y., Takami H., Takeda M., Takizawa Y., Talai M. C., Tenzer C., Thomas S. B., Tibolla O., Tkachev L., Tokuno H., Tomida T., Tone N., Toscano S., Traiche M., Tsenov R., Tsunesada Y., Tsuno K., Tubbs J., Turriziani S., Uchihori Y., Vaduvescu O., Valdes-Galicia J. F., Vallania P., Vankova G., Vigorito C., Villasenor L., Vlcek B., von Ballmoos P., Vrabel M., Wada S., Watanabe J., Watts J. Jr., Weber M., Weigand Munoz R., Weindl A., Wiencke L., Wille M., Wilms J., Wlodarczyk Z., Yamamoto T., Yang J., Yano H., Yashin I. V, Yonetoku D., Yoshida S., Young R., Zgura I. S., Zotov M. Yu, Marchi A. Zuccaro

ASTROPARTICLE PHYSICS Vol. 111 page： 54 - 71 2019.9

Generation of He-4(2)* Clusters via Neutron-He-3 Absorption Reaction Toward Visualization of Full Velocity Field in Quantum Turbulence

Matsushita T., Sonnenschein V., Guo W., Hayashida H., Hiroi K., Hirota K., Iguchi T., Ito D., Kitaguchi M., Kiyanagi Y., Kokuryu S., Kubo W., Saito Y., Shimizu H. M., Shinohara T., Suzuki S., Tomita H., Tsuji Y., Wada N.

JOURNAL OF LOW TEMPERATURE PHYSICS Vol. 196 ( 1-2 ) page： 275 - 282 2019.7

First ultracold neutrons produced at TRIUMF Open Access

Ahmed S., Altiere E., Andalib T., Bell B., Bidinosti C. P., Cudmore E., Das M., Davis C. A., Franke B., Gericke M., Giampa P., Gnyp P., Hansen-Romu S., Hatanaka K., Hayamizu T., Jamieson B., Jones D., Kawasaki S., Kikawa T., Kitaguchi M., Klassen W., Konaka A., Korkmaz E., Kuchler F., Lang M., Lee L., Lindner T., Madison K. W., Makida Y., Mammei J., Mammei R., Martin J. W., Matsumiya R., Miller E., Mishima K., Momose T., Okamura T., Page S., Picker R., Pierre E., Ramsay W. D., Rebenitsch L., Rehm F., Schreyer W., Shimizu H. M., Sidhu S., Sikora A., Smith J., Tanihata I., Thorsteinson B., Vanbergen S., van Oers W. T. H., Watanabe Y. X.

PHYSICAL REVIEW C Vol. 99 ( 2 ) 2019.2

Pendellosung interferometry by using pulsed neutrons (vol 908, pg 78, 2018) Open Access

Itoh Shigeyasu, Nakaji Masaya, Uchida Yuya, Kitaguchi Masaaki, Shimizu Hirohiko M.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT Vol. 918 page： 99 - 99 2019.2

Future Prospect 2

Shimizu Hirohiko M.

hamon Vol. 29 ( 1 ) page： 41 - 43 2019.2

Language：Japanese Publisher：The Japanese Society for Neutron Science

<p>Analytic framework to quantitatively evaluate the performance of existing neutron scattering instruments would be valuable to find out new possibilities and potentials of slow neutron beams. A conceptual introduction of ongoing exploration for building up a framework is discussed.</p>

DOI： 10.5611/hamon.29.1_41

Verification of the compound nuclear model for T-violation search Open Access

Yamamoto T., Shimizu H.M., Ishizaki K., Niinomi Y., Kitaguchi M., Takada S., Koga J., Makise S., Yoshioka T., Kimura A., Sakai K., Oku T., Okudaira T., Endo S., Tani Y., Fujioka H., Yoshikawa H., Hirota K., Shima T.

Proceedings of Science Vol. 356 2019

Language：Japanese Publisher：Proceedings of Science

Large sources of parity violation have been observed in compound nuclear reactions. These enhancements are described by the compound nuclear model, which can be used to describe the angular correlation of γ-rays produced in (n; γ) reactions in medium-heavy nuclei. It has also been suggested that these same reactions could lead to a similar enhancement in time reversal violating processes. Therefore, we are interested in verifying the compound nuclear model by studying the (n; γ) reaction using polarized neutrons. In this paper, we discuss the installation and characterization of a neutron polarizer used in the (n; γ) measurement with transversely polarized neutrons.

DOI： 10.22323/1.356.0042

Polarized lanthanum target for the t-violation search in slow neutron transmission Open Access

Ishizaki K., Shimizu H.M., Kitaguchi M., Matsushita T., Iinuma M., Kohri H., Yoshikawa H., Yosoi M., Shima T., Iwata T., Miyachi Y., Ishimoto S., Fujita M., Ikeda Y.

Proceedings of Science Vol. 379 2019

Language：Japanese Publisher：Proceedings of Science

The Nd3+ doped LaAlO3 crystal is a good candidate of a polarized 139La target for the search of the P-odd and T-odd interaction in the low-energy neutron absorption of 139La. As the first step for realizing the polarized 139La target, we grow the undoped LaAlO3 crystal and the La1−xNdxAlO3 (x = 5 ×10−4) crystal by floating-zone method with four halogen lamps. The ESR measurements of Nd3+ in the latter crystal indicated that the linewidth was about 6 gauss, whose value is the same as the crystal in which 50 % 139La polarization was achieved in the previous DNP experiment. As the result, the crystals grown by this method can be applicable to the target study for the T-violation search.

DOI： 10.22323/1.379.0061

Development of the neutron polarizer for the T-violation search using compound nuclei Open Access

Okudaira T., Oku T., Sakai K., Ino T., Hayashida H., Hiroi K., Shinohara T., Kakurai K., Aizawa K., Shimizu H.M., Kitaguchi M., Yamamoto T.

Proceedings of Science Vol. 356 2019

Language：Japanese Publisher：Proceedings of Science

The fundamental parity violation is enhanced by 106 times at maximum in several neutron induced compound nuclei. There is a theoretical prediction that fundamental T-violating effects can be also largely enhanced in compound nuclei implying that T-violation can be searched for by making very sensitive measurements. A T-violation search experiment using compound nuclei is planned at J-PARC. Polarized epithermal neutron beam, polarized nuclear target, and high count rate neutron detector are necessary for the experiment, and therefore a development of the neutron polarizer using polarized 3He is ongoing at J-PARC in JAEA. Recently, a clean vacuum system to fabricate 3He spin filters was constructed, and several 3He spin filters were fabricated. The current status of the development of the 3He spin filter was reported.

DOI： 10.22323/1.356.0029

Experiment of unknown interaction search using neutron-rare gas scattering in J-PARC / BL 05 - 2018Data analysis -

Hiromoto Masayuki, Shima Tatushi, Simizu Hirohiko M., Hirota Katuya, Kitaguti Masaaki, Haddock C. C., Snow W. M., Yoshioka Tamaki, Mishima Kenji, Ino Takashi

Meeting Abstracts of the Physical Society of Japan Vol. 74.1 ( 0 ) page： 306 - 306 2019

Proof-of-principle experiment for study of new intermediate range interaction by means of neutron coherent scattering

Hiromoto Masayuki, Hori Taichi, Haddock Christopher C., Oi Noriko, Hirota Katsuya, Ino Takashi, Kitaguchi Masaaki, Mishima Kenji, Shima Tatsushi, Shimizu Hirohiko M., Snow W. Michael, Hara Shuhei, Yoshioka Tamaki

Meeting Abstracts of the Physical Society of Japan Vol. 74.2 ( 0 ) page： 269 - 269 2019

Unknown Interaction Search with Neutron Diffraction

Fujiie T., Shimizu H. M., Kitaguchi M., Yamagata Y., Hosobata T., Takeda M., Young Albert, Heacock Benjamin, Huber Michael

Meeting Abstracts of the Physical Society of Japan Vol. 74.2 ( 0 ) page： 95 - 95 2019

unknown interaction Search with neutron diffraction

Fujiie T., Shimizu H. M., Kitaguchi M., Yamagata Y., Hosobata T., Takeda M., Heacock Benjamin, Young Albert, Huber Michael

Meeting Abstracts of the Physical Society of Japan Vol. 74.1 ( 0 ) page： 162 - 162 2019

Development of Pulsed Neutron Corresponding Interferometer

Yamamoto Nana, Kitaguchi Masaaki, Shimizu Hirohiko, Seki Yoshichika, Mishima Kenji

Meeting Abstracts of the Physical Society of Japan Vol. 74.2 ( 0 ) page： 265 - 265 2019

Measurement of the effective electric field of SiO<sub>2</sub> and the plan for the nEDM search

Itoh Shigeyasu, Hishida Mayu, Fukumura Seiso, Kitaguchi Masaaki, Shimizu Hirohiko M.

Meeting Abstracts of the Physical Society of Japan Vol. 74.2 ( 0 ) page： 266 - 266 2019

Report of the MTV experiment 2

Ozaki S., Kajihara T., Kawamura H., Kitaguchi M., Goto F., Sakamoto Y., Shimizu H. M., Shimizu Y., Takenaka R., Tanaka S., Tanuma R., Tamura K., Totsuka Y., Nakaya Y., Baba H., Masuda H., Yamawaki Y., Yokohashi M., Yoshida T., Watanabe E., Behr John A, Pearson Matthew, Levy Phil, Murata J.

Meeting Abstracts of the Physical Society of Japan Vol. 74.1 ( 0 ) page： 304 - 304 2019

Report of the MTV experiment 1

Goto F., Ozaki S., Kajihara T., Kawamura H., Kitaguchi M., Sakamoto Y., Shimizu H. M., Shimizu Y., Takenaka R., Tanaka S., Tamura K., Totsuka Y., Nakaya Y., Baba H., Masuda H., Murata J., Yamawaki Y., Yokohashi M., Watanabe E., Behr John A, Pearson Matthew, Levy Phil

Meeting Abstracts of the Physical Society of Japan Vol. 74.1 ( 0 ) page： 303 - 303 2019

Neutron lifetime measurement at J-PARC/BL05: SFC upgrade

Okabe Hiroki, Hino Masahiro, Hirota Katsuya, Ieki Sei, Ino Takashi, Iwashita Yoshihisa, Kitaguchi Masaaki, Kitahara Ryunosuke, Koga Jun, Mishima Kenji, Morishita Aya, Nakano Yusuke, Nagakura Naoki, Oda Tatsuro, Oide Hideyuki, Otono Hidetoshi, Seki Yoshichika, Sekiba Daiichiro, Shima Tatsushi, Shimizu Hirohiko M., Sumi Naoyuki, Sumino Hirochika, Taketani Kaoru, Tomita Tatsuhiko, Uehara Hideaki, Yamada Takahito, Yamashita Satoru, Yokohashi Mami, Yoshioka Tamaki

Meeting Abstracts of the Physical Society of Japan Vol. 74.2 ( 0 ) page： 94 - 94 2019

Neutron lifetime measurement at J-PARC BL05: SFC upgrade

Okabe Hiroki, Hirota Katsuya, Ieki Sei, Ino Takashi, Iwashita Yoshihisa, Kitaguchi Masaaki, Kitahara Ryunosuke, Koga Jun, Mishima Kenji, Morishita Aya, Nakano Yusuke, Nagakura Naoki, Oide Hideyuki, Otono Hidetoshi, Seki Yoshichika, Sekiba Daiichiro, Shima Tatsushi, Shimizu Hirohiko M., Sumi Naoyuki, Sumino Hirochika, Taketani Kaoru, Tomita Tatsuhiko, Uehara Hideaki, Yamada Takahito, Yamashita Satoru, Yokohashi Mami, Yoshioka Tamaki

Meeting Abstracts of the Physical Society of Japan Vol. 74.1 ( 0 ) page： 163 - 163 2019

High resolution tracker development for search for neutron-antineutron oscillation

Hisamura Sara, Kitaguchi Masaaki, Shimizu Hirohiko

Meeting Abstracts of the Physical Society of Japan Vol. 74.2 ( 0 ) page： 323 - 323 2019

Experimental performance evaluation of the 2nd ultracold neutron rebuncher and the result

Imajo Sohei, Iwashita Yoshihisa, Mishima Kenji, Kitaguchi Masaaki, Shimizu Hirohiko M., Ino Takashi, Yamashita Satoru, Hirota Katsuya, Goto Fumiya, Fuwa Yasuhiro, Katayama Ryo

Meeting Abstracts of the Physical Society of Japan Vol. 74.2 ( 0 ) page： 93 - 93 2019

Development of nuclear polarized targets for the T-violation experiments in compound nuclei

Iinuma M., Shimizu H. M., Ikegami H., Ikeda Y., Ishizaki K., Ishiguro R., Ishimoto S., Ino T., Iwata T., Uesaka T., Otomo T., Oku T., Kanda H., Kitaguchi M., Kohri H., Shima T., Takahashi D., Takahashi Y., Fujita M., Matsushita T., Miyachi Y., Yosoi M., Wada N., NOPTREX collaboration

Meeting Abstracts of the Physical Society of Japan Vol. 74.1 ( 0 ) page： 277 - 277 2019

Measurement of the inner electric field to search the neutron EDM by the crystal diffraction 2

Uchida Yuya, Itoh Shigeyasu, Fukumura Seiso, Yamamoto Nana, Kitaguchi Masaaki, Shimizu Hirohiko

Meeting Abstracts of the Physical Society of Japan Vol. 74.1 ( 0 ) page： 298 - 298 2019

Evaluation of Crystals by for Neutron EDM Measurement Using Crystal Diffraction

hishida Mayu, Itoh Shigeyasu, Fukumura Seiso, kitaguchi Masaaki, Shimizu Hirohiko

Meeting Abstracts of the Physical Society of Japan Vol. 74.2 ( 0 ) page： 267 - 267 2019

Evaluation of Crystals by X-Ray for Neutron EDM Measurement Using Crystal Diffraction

Fukumura Seiso, Itoh Shigeyasu, Uchida Yuya, Yamamoto Nana, kitaguchi Masaaki, Shimizu Hirohiko

Meeting Abstracts of the Physical Society of Japan Vol. 74.1 ( 0 ) page： 299 - 299 2019

Construction of the imaging port at Nagoya University Accelerator-driven Neutron Source

Awano Shogo, Ichikawa Go, Imajo Sohei, Iwashita Yoshihisa, Uritani Akira, Kitaguchi Masaaki, Kiyanagi Yoshiaki, Shimizu Hirohiko, Tsuchikawa Yusuke, Tsuchida Kazuki, Tsurita Yukio, Hirota Katsuya, Miwata Yasuhiko, Yamagata Yutaka, Yamazaki Atsushi, Yoshihashi Sachiko, Watanabe Kenichi

Meeting Abstracts of the Physical Society of Japan Vol. 74.1 ( 0 ) page： 416 - 416 2019

The development of <sup>139</sup>La polarized target as a low energy neutron beam target.

Ishizaki K., Shimizu H. M., Kitaguchi M., Matsushita T., Iinuma M., Fujita M., Ikeda Y., Kohri H., Ikegami H., Ishiguro R., Ishimoto S., Ino T., Iwata T., Uesaka T., Otomo T., Oku T., Kanda H., Shima T., Takahashi D., Takahashi Y., Miyachi Y., Yosoi M., Wada N., NOPTREX

Meeting Abstracts of the Physical Society of Japan Vol. 74.2 ( 0 ) page： 299 - 299 2019

A cold/ultracold neutron detector using fine-grained nuclear emulsion with spatial resolution less than 100 nm Open Access

Naganawa N., Ariga T., Awano S., Hino M., Hirota K., Kawahara H., Kitaguchi M., Mishima K., Shimizu H. M., Tada S., Tasaki S., Umemoto A.

EUROPEAN PHYSICAL JOURNAL C Vol. 78 ( 11 ) 2018.11

Pendellosung interferometry by using pulsed neutrons Reviewed Open Access

Itoh Shigeyasu, Nakaji Masaya, Uchida Yuya, Kitaguchi Masaaki, Shimizu Hirohiko M

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT Vol. 908 page： 78 - 81 2018.11

The general relativistic effects on the magnetic moment in Earth's gravity (vol 2018, 063B07, 2018) Reviewed Open Access

Morishima Takahiro, Futamase Toshifumi, Shimizu Hirohiko M

PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS Vol. 2018 ( 8 ) 2018.8

On the Collaboration between PASJ and JSNS for the Construction of Compact and Medium-sized Accelerator Driven Neutron Sources

Hirota Katsuya, Shimizu Hirohiko M., Iwashita Yoshihisa, Naito Fujio

Journal of the Particle Accelerator Society of Japan Vol. 15 ( 2 ) page： 69 - 72 2018.7

Nuclear spin dependence of time reversal invariance violating effects in neutron scattering Reviewed Open Access

Vladimir Gudkov, Hirohiko M. Shimizu

Physical Review C Vol. 97 ( 6 ) 2018.6

Language：English Publishing type：Research paper (scientific journal) Publisher：American Physical Society

The spin structure of parity violating and time reversal invariance violating effects in neutron scattering is discussed. The explicit relations between these effects are presented in terms of functions nuclear spins and neutron partial widths of p-wave resonances.

DOI： 10.1103/PhysRevC.97.065502

Search for deviations from the inverse square law of gravity at nm range using a pulsed neutron beam Reviewed Open Access

Christopher C. Haddock, Noriko Oi, Katsuya Hirota, Takashi Ino, Masaaki Kitaguchi, Satoru Matsumoto, Kenji Mishima, Tatsushi Shima, Hirohiko M. Shimizu, W. Michael Snow, Tamaki Yoshioka

Physical Review D Vol. 97 ( 6 ) 2018.3

Language：Japanese Publishing type：Research paper (scientific journal)

© 2018 American Physical Society. We describe an experimental search for deviations from the inverse-square law of gravity at the nanometer length scale using neutron scattering from noble gases on a pulsed slow neutron beam line. By measuring the neutron momentum transfer (q) dependence of the differential cross section for xenon and helium and comparing to their well-known analytical forms, we place an upper bound on the strength of a new interaction as a function of interaction length λ which improves upon previous results in the region λ<0.1 nm, and remains competitive in the larger-λ region. A pseudoexperimental simulation is developed for this experiment and its role in the data analysis is described. We conclude with plans for improving sensitivity in the larger-λ region.

DOI： 10.1103/PhysRevD.97.062002

Plan for T-Violation search in a compound nucleus

Yamamoto Tomoki, Shimizu Hirohiko M., Kitaguchi Masaaki, Hirota Katsuya, Ishizaki Kohei, Endo Shunsuke, Sato Takumi, Takada Shusuke, Koga Jun, Yoshioka T., Ino Takashi, Haddock Christopher, Asahi Koichiro, Momose Takamasa, Iwata Takahiro, Sakai Kenji, Kimura Atsushi, Okudaira Takuya, Oku Takayuki, Hino Masahiro, Shima Tatsushi, Yamagata Yutaka

Meeting Abstracts of the Physical Society of Japan Vol. 73.2 ( 0 ) page： 67 - 67 2018

Development of neutron spin filter for T violation search

Sato Takumi, Shimizu Hirohiko M., Kitaguchi Masaaki, Hirota Katsuya, Ishizaki Kohei, Endo Shunsuke, Yamamoto Tomoki, Takada Shusuke, Koga Jun, Yoshioka Tamaki, Ino Takashi, Haddock Christopher, Asahi Koichiro, Momose Takamasa, Iwata Takahiro, Sakai Kenji, Kimura Atsushi, Okudaira Takuya, Oku Takayuki, Hino Masahiro, Shima Tatsushi, Yamagata Yutaka, Hattori Mineyuki

Meeting Abstracts of the Physical Society of Japan Vol. 73.2 ( 0 ) page： 69 - 69 2018

Verification of the dynamical diffraction for searching of nEDM by using crystal diffraction

Nakaji Masaya, Itoh Shigeyasu, Uchida Yuya, Kitaguchi Masaaki, Shimizu Hirohiko

Meeting Abstracts of the Physical Society of Japan Vol. 73.1 ( 0 ) page： 388 - 388 2018

Measurement of the inner electric field to search the neutron EDM by the crystal diffraction

Uchida Yuya, Itoh Shigeyasu, Fukumura Seiso, Yamamoto Nana, Kitaguchi Masaaki, Shimizu Hirohiko

Meeting Abstracts of the Physical Society of Japan Vol. 73.2 ( 0 ) page： 124 - 124 2018

For measurement of the inner electric field to search the neutron EDM by the crystal diffraction

Uchida Yuya, Itoh Shigeyasu, Nakaji Masaya, Kitaguchi Masaaki, Shimizu Hirohiko

Meeting Abstracts of the Physical Society of Japan Vol. 73.1 ( 0 ) page： 389 - 389 2018

Development of the Neutron Spin Filter with Triplet-DNP for T-violation search in Compound nucleus

Takada S., Koga J., Yoshioka T., Uesaka T., Tateishi K., Otake Y., Ikeda Y., Wakabayashi Y., Shimizu H. M., Hirota K., Haddock C., Okudaira T., Oi N., Ito I., Yamamoto T., Ishizaki K., Endo S., Sato T., Kitaguchi M., Sakai K.

Meeting Abstracts of the Physical Society of Japan Vol. 73.1 ( 0 ) page： 404 - 404 2018

Theγ-ray angular distribution of <sup>81</sup>Br(n,γ) reaction for T-Violatio search by using compound-nucleus resonance

Endo Shunsuke, Shimizu Hirohiko M., Kitaguchi Masaaki, Hirota Katsuya, Yamamoto Tomoki, Ishizaki Kohei, Sato Takumi, Takada Shusuke, Koga Jun, Yoshioka Tamaki, Ino Takashi, Haddock Christopher, Asahi Koichiro, Momose Takamasa, Iwata Takahiro, Sakai Kenji, Kimura Atsushi, Okudaira Takuya, Oku Takayuki, Hino Masahiro, Shima Tatsushi, Yamagata Yutaka

Meeting Abstracts of the Physical Society of Japan Vol. 73.2 ( 0 ) page： 68 - 68 2018

The development of polarized target for T-Violation search in a compound nucleus

Ishizaki Kohei, Shimizu Hirohiko M., Kitaguchi Masaaki, Hirota Katsuya, Yamamoto Tomoki, Endo Shunsuke, Sato Takumi, Takada Shusuke, Koga Jun, Yoshioka Tamaki, Ino Takashi, Haddock Christopher, Asahi Koichiro, Momose Takamasa, Iwata Takahiro, Sakai Kenji, Kimura Atsushi, Okudaira Takuya, Oku Takayuki, Hino Masahiro, Shima Tatsushi, Yamagata Yutaka

Meeting Abstracts of the Physical Society of Japan Vol. 73.2 ( 0 ) page： 70 - 70 2018

Academic Applications of Neutrons

SHIMIZU Hirohiko M.

The Review of Laser Engineering Vol. 46 ( 11 ) page： 647 2018

Neutron lifetime measurement at J-PARC/BL05: Upgrade

Uehara Hideaki, Sumi Naoyuki, Tomita Tatuhiko, Otono Hidetoshi, Yoshioka Tamaki, Yamashita Satoru, Nagakura Naoki, Shimizu Hirohiko M., Hirota Katsuya, Nakano Yusuke, Okabe Hiroki, Kitaguchi Masaaki, Iwashita Yoshihisa, Seki Yoshichika, Oide Hideyuki, Ino Takashi, Taketani Kaoru, Mishima Kenji

Meeting Abstracts of the Physical Society of Japan Vol. 73.2 ( 0 ) page： 73 - 73 2018

Report of the MTV Run-2017

Goto F., Ozaki S., Kajihara T., Kawamura H., Kitaguchi M., Sakamoto Y., Shimizu H. M., Shimizu Y., Takenaka R., Tanaka S., Tamura K., Totsuka Y., Nakatani Y., Baba H., Masuda H., Murata J., Yamawaki Y., Yokohashi M., Watanabe E., Behr John A, Pearson Matthew, Levy Phil

Meeting Abstracts of the Physical Society of Japan Vol. 73.1 ( 0 ) page： 401 - 401 2018

Measurement of neutron two-dimensional scintillation detector

Akagi T., Simizu H. M., Kitaguchi M., Hirota K., Okabe H., Niinomi Y., Hukumura S.

Meeting Abstracts of the Physical Society of Japan Vol. 73.1 ( 0 ) page： 345 - 345 2018

Simulations of upstream optics for neutron lifetime measurement at J-PARC

Okabe Hiroki, Nakano Yusuke, Tomita Tatsuhiko, Uehara Hideaki, Koga Jun, Sumi Naoyuki, Otono Hidetoshi, Yoshioka Tamaki, Yamashita Satoru, Ieki Sei, Nagakura Naoki, Yamada Takahito, Sumino Hiroshi, Shimizu Hirohiko M., Hirota Katsuya, Kitaguchi Masaaki, Iwashita Yoshihisa, Kitahara Ryunosuke, Shima Tatsushi, Sekiba Daiichiro, Seki Yoshichika, Oide Hideyuki, Ino Takashi, Taketani Kaoru, Mishima Kenji

Meeting Abstracts of the Physical Society of Japan Vol. 73.1 ( 0 ) page： 346 - 346 2018

Neutron lifetime measurement at J-PARC/BL05: Present status(2018)

Mishima Kenji, Hirota Katsuya, Ieki Sei, Ino Takashi, Iwashita Yoshihisa, Kitaguchi Masaaki, Kitahara Ryunosuke, Koga Jun, Morishita Aya, Nagakura Naoki, Nakano Yusuke, Oide Hideyuki, Okabe Hiroki, Otono Hidetoshi, Seki Yoshichika, Sekiba Daiichiro, Shima Tatsushi, Shimizu Hirohiko M., Sumi Naoyuki, Sumino Hirochika, Taketani Kaoru, Tomita Tatsuhiko, Uehara Hideaki, Yamada Takahito, Yamashita Satoru, Yokohashi Mami, Yoshioka Tamaki

Meeting Abstracts of the Physical Society of Japan Vol. 73.2 ( 0 ) page： 72 - 72 2018

Neutron lifetime measurement at J-PARC/BL05 : operation in low gas pressure

Tomita Tatsuhiko, Uehara Hideaki, Koga Jun, Sumi Naoyuki, Otono Hidetoshi, Yoshioka Tamaki, Yamashita Satoru, Ieki Sei, Nagakura Naoki, Yamada Takahito, Sumino Hiroshi, Shimizu Hirohiko M., Hirota Katsuya, Kitaguchi Masaaki, Iwashita Yoshihisa, Kitahara Ryunosuke, Shima Tatsushi, Sekiba Daiichiro, Seki Yoshichika, Oide Hideyuki, Ino Takashi, Taketani Kaoru, Mishima Kenji

Meeting Abstracts of the Physical Society of Japan Vol. 73.1 ( 0 ) page： 114 - 114 2018

The International Conference on Neutron Optics (NOP2017) in Nara

Kiyanagi Y., Kakurai K., Shimizu H., Kitaguchi M., Oku T.

Neutron News Vol. 28 ( 4 ) page： 18 - 20 2017.10

Concentration of the velocity distribution of pulsed neutron beams Reviewed Open Access

Masaaki Kitaguchi, Yoshihisa Iwashita, Hirohiko M. Shimizu

PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS Vol. 2017 ( 4 ) 2017.4

Language：English Publishing type：Research paper (scientific journal) Publisher：OXFORD UNIV PRESS INC

The velocity of neutrons from a pulsed neutron source is well defined as a function of their arrival time. An electro-magnetic neutron accelerator/decelerator synchronized with the neutron time-of-flight is capable of selectively changing the neutron velocity and concentrating the velocity distribution. The possible enhancement of the neutron intensity at a specific neutron velocity by orders of magnitude is discussed, together with an experimental design.

DOI： 10.1093/ptep/ptx029

Developments of high count rate neutron detector for T-Violation search

Endo Shunsuke, Shimizu Hirohiko M., Kitaguchi Masaaki, Hirota Katsuya, Okudaira Takuya, Oi Noriko, Ito Ikuya, Yamamoto Tomoki, Haddock Christopher, Takada Shusuke, Koga Jun, Yoshioka Tamaki, Ino Takashi, Asahi Koichiro, Momose Takamasa, Iwata Takahiro, Sakai Kenji, Oku Takayuki, Kimura Atsushi, Hino Masahiro, Shima Tatsushi, Yamagata Yutaka

Meeting Abstracts of the Physical Society of Japan Vol. 72.2 ( 0 ) page： 259 - 259 2017

High Count Rate Neutron Detector for Search of T-Violation

Endo S., Okudaira T., Shimizu H. M., Kitaguchi M., Hirota K., Okada A., Ito I., Yamamoto T., Takada S., Koga J., Yoshioka T., Ino T., Asahi K., Momose T., Iwata T., Sakai K., Kimura A., Hino M., Shima T., Yamagata Y.

Meeting Abstracts of the Physical Society of Japan Vol. 72.1 ( 0 ) page： 356 - 356 2017

Simulation of searching of nEDM by using crystal-diffraction method

Nakaji Masaya, Itoh Shigeyasu, Uchida Yuya, Kitaguchi Masaaki, Shimizu Hirohiko

Meeting Abstracts of the Physical Society of Japan Vol. 72.2 ( 0 ) page： 283 - 283 2017

Design of experiment of search for the neutron EDM using crystal diffraction method.

Nakaji Masaya, Itoh Shigeyasu, Kitaguchi Masaaki, Shimizu Hirohiko

Meeting Abstracts of the Physical Society of Japan Vol. 72.1 ( 0 ) page： 270 - 270 2017

Analysis of (n,γ) reactions of 117Sn and 115In for T violation search

Koga J., Takada S., Yoshioka T., Shimizu H. M., Hirota K., Okudaira T., Oi N., Ito I., Yamamoto T., Endo S., Haddock C., Kitaguchi M., Kimura A., Sakai K., Ino T., Asahi K., Momose T., Iwata T., Hino M., Shima T., Yamagata Y.

Meeting Abstracts of the Physical Society of Japan Vol. 72.2 ( 0 ) page： 257 - 257 2017

Requirements to the Polarized Nuclear Targets for the T-violation Experiment in Compound Nuclear States

Shimizu H. M., Gudkov V., Snow W. M., Bowman J. D., Kitaguchi M., Hirota K., Haddock C. C., Okudaira T., Oi N., Itoh I., Yamamoto T., Takada S., Koga J., Yoshioka T., Ino T., Asahi K., Momose T., Iwata T., Miyachi Y., Sakai K., Hino M., Shima T., Kohri H., Yamagata Y.

Meeting Abstracts of the Physical Society of Japan Vol. 72.2 ( 0 ) page： 261 - 261 2017

Beharvior of Neutron Polarization in Polarized Nuclear Targets for the T-violation Experiment in Compound Nuclear States

Shimizu H. M., Gudkov V., Snow W. M., Bowman J. D., Kitaguchi M., Hirota K., Okudaira T., Okada A., Itoh I., Yamamoto T., Takada S., Koga J., Yoshioka T., Ino T., Asahi K., Momose T., Iinuma M., Hautle P., Iwata T., Miyachi Y., Sakai K., Hino M., Shima T., Yamagata Y.

Meeting Abstracts of the Physical Society of Japan Vol. 72.1 ( 0 ) page： 301 - 301 2017

Precise measurement of the angular correlations in the (n, γ) reaction for T violation search

Okudaira T., Shimizu H. M., Kitaguchi M., Hirota K., Okada A., Ito I., Yamamoto T., Takada S., Koga J., Yoshioka T., Ino T., Asahi K., Momose T., Iwata T., Sakai K., Kimura A., Hino M., Shima T., Yamagata Y.

Meeting Abstracts of the Physical Society of Japan Vol. 72.1 ( 0 ) page： 300 - 300 2017

Precise measurement of the angular correlations in the 139La(n, γ) reaction for T violation search

Okudaira T., Shimizu H. M., Kitaguchi M., Hirota K., Haddock C. C., Oi N., Ito I., Yamamoto T., Takada S., Koga J., Yoshioka T., Ino T., Asahi K., Momose T., Iwata T., Sakai K., Kimura A., Hino M., Shima T., Yamagata Y.

Meeting Abstracts of the Physical Society of Japan Vol. 72.2 ( 0 ) page： 256 - 256 2017

Development of neutron polarizer for T-Violation searching in compound nucleus

Yamaomto T., Shimizu H. M., Kitaguchi M., Hirota K., Okudaira T., Okada A., Ito I., Takada S., Koga J., Yoshioka T., Ino T., Asahi K., Momose T., Iwata T., Sakai K., Kimura A., Hino M., Shima T., Yamagata Y.

Meeting Abstracts of the Physical Society of Japan Vol. 72.1 ( 0 ) page： 303 - 303 2017

Measurement of P-violation using polarized neutrons for T-violation measurement in the compound nucleus resonance

Yamamoto Tomoki, Shimizu Hirohiko M., Kitaguchi Masaaki, Hirota Katsuya, Okudaira Takuya, Oi Noriko, Endo Shunsuke, Haddock Christopher, Takada Shusuke, Koga Jun, YOSHIOKA TAMAKI, Ino Takashi, Asahi Koichiro, Momose Takamasa, Iwata Takahiro, Sakai Kenji, Kimura Atsushi, Oku Takayuki, Hino Masahiro, Shima Tatsushi, Yamagata Yutaka

Meeting Abstracts of the Physical Society of Japan Vol. 72.2 ( 0 ) page： 258 - 258 2017

Search for CP-violation effects in compound neutron resonance at J-PARC

Kitaguchi M., Shimizu H. M., Hirota K., Okudaira T., Okada A., Ito I., Yamamoto T., Takada S., Koga J., Yoshioka T., Ino T., Asahi K., Momose T., Iwata T., Sakai K., Kimura A., Hino M., Shima T., Yamagata Y.

Meeting Abstracts of the Physical Society of Japan Vol. 72.1 ( 0 ) page： 299 - 299 2017

Search for CP-violation effects in compound neutron resonance at J-PARC

Kitaguchi M., Shimizu H. M., Hirota K., Okudaira T., Oi N., Ito I., Yamamoto T., Endo S., Haddock C., Takada S., Koga J., Yoshioka T., Ino T., Asahi K., Momose T., Iwata T., Sakai K., Kimura A., Hino M., Shima T., Yamagata Y.

Meeting Abstracts of the Physical Society of Japan Vol. 72.2 ( 0 ) page： 255 - 255 2017

Analysis of data of (n, γ) reaction of Br for T violation search

Ito I., Shimizu H. M., Kitaguchi M., Hirota K., Okudaira T., Okada A., Yamamoto T., Takada S., Koga J., Yoshioka T., Ino T., Asahi K., Momose T., Iwata T., Sakai K., Kimura A., Hino M., Shima T., Yamagata Y.

Meeting Abstracts of the Physical Society of Japan Vol. 72.1 ( 0 ) page： 302 - 302 2017

Construction of the Nagoya University Accelerator-driven Neutron Source　(NUANS)

Tsuchikawa Y., Abo K., Ichikawa G., Ito I., Imajo S., Iwashita Y., Uritani A., Kitaguchi M., Kiyanagi Y., Sato K., Shimizu H. M., Takeshita H., Tsuchida K., Tsurita Y., Hirota K., Furuzawa D., Miwata Y., Yamagata Y., Yamazaki A., Yoshihashi S., Watanabe K.

Meeting Abstracts of the Physical Society of Japan Vol. 72.2 ( 0 ) page： 228 - 228 2017

Neutron Lifetime Measurement at J-PARC/BL05 : Tests of the new detector and amplifier

Tomita T., Sumi N., Morishita A., Koga J., Otono H., Yoshioka T., Kitahara R., Iwashita Y., Yamada T., Yamashita S., Hirota K., Shimizu H., Yokohashi M., Kitaguchi M., Oide H., Shima T., Mishima K., Taketani K., Ino T.

Meeting Abstracts of the Physical Society of Japan Vol. 72.1 ( 0 ) page： 92 - 92 2017

Neutron lifetime measurement at J-PARC/BL05: Beamline upgrade for high statistical measurements

Kitahara Ryunosuke, Iwashita Yoshihisa, Shimizu Hirohiko M., Hirota Katsuya, Yokohashi Mami, Kitaguchi Masaaki, Yamashita Satoru, Yamada Takahito, Ieki Sei, Nagakura Naoki, Sumino Hirochika, Yoshioka Tamaki, Otono Hidetoshi, Tomita Tatsuhiko, Sumi Naoyuki, Morishita Aya, Koga Jun, Oide Hideyuki, Shima Tatsushi, Mishima Kenji, Ino Takashi, Taketani Kaoru, Seki Yoshichika, Sekiba Daiichiro

Meeting Abstracts of the Physical Society of Japan Vol. 72.2 ( 0 ) page： 76 - 76 2017

Measurement of neutron scattering from noble gas to search for a short-range unknown force at J-PARC -Data analysis-

Oi Noriko, Shimizu Hirohiko M., Hirota Katsuya, Kitaguchi Masaaki, Haddock C. C., Snow W. M., Yoshioka Tamaki, Matsumoto Satoru, Mishima Kenji, Ino Takashi, Shima Tatsushi

Meeting Abstracts of the Physical Society of Japan Vol. 72.2 ( 0 ) page： 263 - 263 2017

Result of the Ultracold Neutron focus experiment by the UCN Rebuncher at J-PARC/MLF

Imajo Sohei, Iwashita Yoshihisa, Mishima Kenji, Kitaguchi Masaaki, Shimizu Hirohiko M., Ino Takashi, Yamashita Satoru, Hirota Katsuya, Goto Fumiya, Fuwa Yasuhiro, Katayama Ryo, NOP collaboration

Meeting Abstracts of the Physical Society of Japan Vol. 72.2 ( 0 ) page： 77 - 77 2017

Measurement of angular correlation of (n,gamma) reaction with polarized neutrons Open Access

Yamamoto T., Shimizu H.M., Kitaguchi M., Hirota K., Okudaira T., Takada S., Okada A., Yoshioka T., Ino T., Sakai K., Asahi K., Momose T., Iwata T., Hino M., Shima T., Yamagata Y.

Proceedings of Science Vol. 2017-January 2017

Publisher：Proceedings of Science

Large enhanced P violation in a nuclear resonance reaction has been observed by using a polarized neutron beam. Enhanced CP violation is predicted to exist within the same nuclear reaction. We are now preparing to supply a polarized neutron beam for a CP violation search experiment. In the enhancement process of CP violation, we assume that the P violation of the compound nuclear state doesn't depend on the final state. However this assumption has not been verified yet. We plan to verify the assumption by measuring the 139La(n,g ) reaction with a polarized neutron beam at J-PARC MLF BL04. The supplied neutron beam will be polarized by using 3He spin filter, which will be installed into BL04. We present the states of development for 3He spin filter and study of the equipment in BL04.

DOI： 10.22323/1.294.0049

Measurement of neutron scattering from noble gas to search for a short-range unknown force Open Access

Noriko O.I., Shimizu H.M., Hirota K., Kitaguchi M., Haddock C.C., Snow W.M., Yoshioka T., Matsumoto S., Mishima K., Ino T., Shima T.

Proceedings of Science Vol. 2017-January 2017

Publisher：Proceedings of Science

We are searching for an unknown force that could couple to mass using neutron scattering from a noble gas. The neutron is a chargeless massive particle with a long lifetime, which consequently is suitable for the precise measurement of a small interaction with a range of the order of 1nm by measurements of the momentum transfer distribution. We measured neutron scattering at the low-divergence beam branch on the BL05 NOP beamline in the Materials and Life Science Experimental Facility (MLF) at the Japan Proton Accelerator Research Complex (J-PARC). We report recent experimental data.

DOI： 10.22323/1.281.0190

Measurement of neutron scattering from noble gas to search for a short-range unknown force at J-PARC - Overview and Simulation Results

Haddock C. C., Oi Noriko, Shimizu Hirohiko M., Hirota Katsuya, Kitaguchi Masaaki, Snow W. M., Yoshioka Tamaki, Matsumoto Satoru, Mishima Kenji, Ino Takashi, Shima Tatsushi

Meeting Abstracts of the Physical Society of Japan Vol. 72.2 ( 0 ) page： 262 - 262 2017

Report of the MTV Run-2016 II

Goto F., Kitaguchi M., Shimizu H. M., Yokohashi M., Ozaki S., Kajihara T., Sakamoto Y., Shimizu Y., Masuda H., Murata J., Yamawaki Y., Watanabe E., Koshikawa A., Baba H., kawamura H., Openshaw Robert, Pearson Matthew

Meeting Abstracts of the Physical Society of Japan Vol. 72.1 ( 0 ) page： 305 - 305 2017

Report of the MTV Run2016 I

Shimizu Y., Ozaki S., Kajihara T., Sakamoto Y., Masuda H., Murata J., Yamawaki Y., Watanabe E., Goto F., Kitaguchi M., Shimizu H. M., Yokohashi M., Koshikawa A., Baba H., Kawamura H., Openshaw Robert, Pearson Matthew

Meeting Abstracts of the Physical Society of Japan Vol. 72.1 ( 0 ) page： 304 - 304 2017

The design of the beam line of the Nagoya University accelerator-driven neutron source Open Access

Ito I., Furusawa D., Hirota K., Ichikawa G., Iwashita Y., Kitaguchi M., Kiyanagi Y., Menjo Y., Miwata Y., Shimizu H.M., Tsuchida K., Tsuchikawa Y., Tsurita Y., Uritani A., Watanabe K., Yamagata Y., Yamazaki A., Yoshihashi S.

Proceedings of Science Vol. 2017-January 2017

Publisher：Proceedings of Science

The Nagoya University Accelerator driven Neutron Source (NUANS) are now constructing at main campus of Nagoya University. The electrostatic accelerator is used with the maximum proton energy and power of 2.8MeV, 15mA(42kW) respectively. Two neutron beam lines are planned at NUANS. The first beam line is dedicated to BNCT. The second beam line is designed for research and development of neutron devices and neutron imaging. The neutrons used for the 2nd beam line are generated by using the (p, n) reaction of beryllium. We designed a compact target station for the 2nd beam line with the dimension of 90cm×90cm×95cm by using radiation shielding simulation. We considered neutron beam extraction with the cross section of 10cm×10cm for radiography at the 2nd beam line. The neutron flux is expected to be about 104n cm-2s-1 with the energy less than 0.1 eV at the position of 2m from the neutron source. We also calculated the proton beam transport from the exit of the accelerator to the neutron production target of the 2nd beam line.

DOI： 10.22323/1.294.0068

Measurement of the inner electric field of Bi<sub>12GeO</sub>20_for the measurement of EDM of a neutron(Ⅱ)

Itoh Shigeyasu, Nakaji Masaya, Kitaguchi Masaaki, Shimizu Hirohiko

Meeting Abstracts of the Physical Society of Japan Vol. 72.1 ( 0 ) page： 269 - 269 2017

Measurement of the inner electric field of Bi<sub>12</sub>GeO<sub>20</sub>for the measurement of EDM of a neutron(Ⅱ)

Itoh Shigeyasu, Nakaji Masaya, Uchida Yuya, Kitaguchi Masaaki, Shimizu Hirohiko

Meeting Abstracts of the Physical Society of Japan Vol. 72.2 ( 0 ) page： 282 - 282 2017

Neutron Lifetime Measurement at J-PARC/BL05 : Development of the amplifier

Tomita T., Sumi N., Morishita A., Koga J., Otono H., Yoshioka T., Kitahara R., Iwashita Y., Yamada T., Yamashita S., Hirota K., Shimizu H., Yokohashi M., Kitaguchi M., Oide H., Shima T., Mishima K., Taketani K., Ino T.

Meeting Abstracts of the Physical Society of Japan Vol. 72.2 ( 0 ) page： 73 - 73 2017

Measurement of neutron scattering from noble gas to search for a short-range unknown force

Oi Noriko, Shimizu Hirohiko M., Hirota Katsuya, Kitaguchi Masaaki, Haddock C. C., Snow W. M., Yoshioka Tamaki, Matsumoto Satoru, Mishima Kenji, Ino Takashi, Shima Tatsushi

Meeting Abstracts of the Physical Society of Japan Vol. 72.1 ( 0 ) page： 298 - 298 2017

Measurement of neutron lifetime at J-PARC/BL05 : Estimation of backgrounds

Ieki Sei, Yamada Takahito, Nagakura Naoki, Yamashita Satoru, Seki Yoshichika, Sumino Hirochika, Shimizu Hirohiko M., Hirota Katsuya, Yokohashi Mami, Kitaguchi Masaaki, Yoshioka Tamaki, Otono Hidetoshi, Tomita Tatsuhiko, Sumi Naoyuki, Morishita Aya, Koga Jun, Iwashita Yoshihisa, Kitahara Ryunosuke, Oide Hideyuki, Shima Tatsushi, Mishima Kenji, Ino Takashi, Taketani Kaoru

Meeting Abstracts of the Physical Society of Japan Vol. 72.1 ( 0 ) page： 65 - 65 2017

Measurement of neutron lifetime at J-PARC/BL05 : The analysis result of neutron capture gamma rays

Koga Jun, Sumi Naoyuki, Takada Shusuke, Tomita Tatsuhiko, Morishita Aya, Otono Hidetoshi, Yoshioka Tamaki, Kitahara Ryunosuke, Iwashita Yoshihisa, Yamada Takahito, Ieki Sei, Nagakura Naoki, Yamashita Satoru, Seki Yoshichika, Sumino Hirochika, Shimizu Hirohiko M., Hirota Katsuya, Okudaira Takuya, Yokohashi Mami, Kitaguchi Masaaki, Mishima Kenji, Ino Takashi, Taketani Kaoru, Kimura Atsushi, Oide Hideyuki, Shima Tatsushi

Meeting Abstracts of the Physical Society of Japan Vol. 72.1 ( 0 ) page： 64 - 64 2017

Neutron lifetime measurement at J-PARC/BL05 : Performance evaluation of large acceptance neutron optics

Yokohashi Mami, Hirota Katsuya, Shimizu Hirohiko, Kitaguchi Masaaki, Kitahara Ryunosuke, Iwashita Yoshihisa, Yoshioka Tamaki, Otono Hidetoshi, Yamada Takahito, Yamashita Satoru, Seki Yoshichika, Oide Hideyuki, Mishima Kenji, Taketani Kaoru, Ino Takashi

Meeting Abstracts of the Physical Society of Japan Vol. 72.1 ( 0 ) page： 63 - 63 2017

Neutron lifetime measurement at J-PARC/BL05: Present status and results

Mishima Kenji, Hirota Katsuya, Ieki Sei, Ino Takashi, Iwashita Yoshihisa, Kitaguchi Masaaki, Kitahara Ryunosuke, Koga Jun, Morishita Aya, Nagakura Naoki, Oide Hideyuki, Otono Hidetoshi, Seki Yoshichika, Sekiba Daiichiro, Shima Tatsushi, Shimizu Hirohiko M., Sumi Naoyuki, Sumino Hirochika, Taketani Kaoru, Tomita Tatsuhiko, Yamada Takahito, Yamashita Satoru, Yokohashi Mami, Yoshioka Tamaki

Meeting Abstracts of the Physical Society of Japan Vol. 72.2 ( 0 ) page： 75 - 75 2017

Measurement of the cross section of neutron resonance in <sup>139</sup>La

Takeshita Hayato, Shimizu Hirohiko, Kitaguchi Masaaki, Hirota Katsuya, Ichikawa Go, Okudaira Takuya, Okada Anju, Goto Fumiya, Nagamoto Kosuke, Yamamoto Tomoki, Takada Shusuke, Yoshioka Tamaki, Ino Takashi, Asahi Koichiro, Momose Takamasa, Iwata Takahiri, Sakai Kenji, Hino Masahiri, Shima Tatsushi, Yamagata Yutaka, Kimura Atsushi

Meeting Abstracts of the Physical Society of Japan Vol. 72.1 ( 0 ) page： 360 - 360 2017

Development of high spatial resolution cold/ultracold neutron detector using fine-grained nuclear emulsion Open Access

Naganawaa N., Awano S., Hino M., Hirose M., Hirota K., Kawahara H., Kitaguchi M., Mishima K., Nagae T., Shimizu H.M., Tada S., Tasaki S., Umemoto A.

Proceedings of Science Vol. 2017-January 2017

The MTV experiment: searching for T-violation in polarized Li-8 at TRIUMF

Murata, J; Baba, H; Behr, JA; Goto, F; Inaba, S; Kawamura, H; Kitaguchi, M; Levy, CDP; Masuda, H; Nakaya, Y; Ninomiya, K; Onishi, J; Openshaw, R; Pearson, M; Sakamoto, Y; Shimizu, H; Shimizu, Y; Tanaka, S; Tanaka, Y; Tanuma, R; Totsuka, Y; Watanabe, E; Yokohashi, M

HYPERFINE INTERACTIONS Vol. 237 ( 1 ) 2016.8

Publisher：Hyperfine Interactions

The MTV experiment (Mott Polarimetry for T-Violation Experiment) is running at TRIUMF, to search for a large T-violating transverse electron-polarization in polarized 8Li β-decay. We aim at reaching precision of 10−4 for the R-correlation, which is defined as a T-violating triple vector correlation in the β-decay rate function. A Mott polarimeter system using a CDC (Cylindrical Drift Chamber) is used to measure the left-right scattering asymmetry in the Mott scattering from a thin metal foil. In the present study, we aim to discuss systematic effects in Mott polarimetry using the CDC.

DOI： 10.1007/s10751-016-1336-z

Neutron-antineutron oscillations: Theoretical status and experimental prospects Open Access

Phillips, DG; Snow, WM; Babul, K; Banerjee, S; Baxter, DV; Berezhiani, Z; Bergevin, M; Bhattacharya, S; Brooijmans, G; Castellanos, L; Chen, MC; Coppola, CE; Cowsik, R; Crabtree, JA; Das, P; Dees, EB; Dolgov, A; Ferguson, PD; Frost, M; Gabrie, T; Gal, A; Gallmeier, F; Ganezer, K; Golubeva, E; Greene, G; Hartfiel, B; Hawari, A; Heilbronn, L; Johnson, C; Kamyshkov, Y; Kerbikov, B; Kitaguchi, M; Kopeliovich, BZ; Kopeliovich, VB; Kuzmin, VA; Liu, CY; McGaughey, P; Mocko, M; Mohapatra, R; Mokhov, N; Muhrer, G; Mumm, HP; Okun, L; Pattie, RW; Quigg, C; Ramberg, E; Ray, A; Roy, A; Ruggles, A; Sarkar, U; Saunders, A; Serebrov, AP; Shimizu, HM; Shrock, R; Sikdar, AK; Sjue, S; Striganov, S; Townsend, LW; Tschirhart, R; Vainshtein, A; Van Kooten, R; Wang, Z; Young, AR

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS Vol. 612 page： 1 - 45 2016.2

Publisher：Physics Reports

The observation of neutrons turning into antineutrons would constitute a discovery of fundamental importance for particle physics and cosmology. Observing the n-n transition would show that baryon number (B) is violated by two units and that matter containing neutrons is unstable. It would provide a clue to how the matter in our universe might have evolved from the B = 0 early universe. If seen at rates observable in foreseeable nextgeneration experiments, it might well help us understand the observed baryon asymmetry of the universe. A demonstration of the violation of B-L by 2 units would have a profound impact on our understanding of phenomena beyond the Standard Model of particle physics. Slow neutrons have kinetic energies of a few meV. By exploiting new slow neutron sources and optics technology developed for materials research, an optimized search for oscillations using free neutrons from a slow neutron moderator could improve existing limits on the free oscillation probability by at least three orders of magnitude. Such an experiment would deliver a slow neutron beam through a magnetically-shielded vacuum chamber to a thin annihilation target surrounded by a low-background antineutron annihilation detector. Antineutron annihilation in a target downstream of a free neutron beam is such a spectacular experimental signature that an essentially background-free search is possible. An authentic positive signal can be extinguished by a very small change in the ambient magnetic field in such an experiment. It is also possible to improve the sensitivity of neutron oscillation searches in nuclei using large underground detectors built mainly to search for proton decay and detect neutrinos. This paper summarizes the relevant theoretical developments, outlines some ideas to improve experimental searches for free neutron oscillations, and suggests avenues both for theoretical investigation and for future improvement in the experimental sensitivity.

DOI： 10.1016/j.physrep.2015.11.001

Pulsed ultra-cold neutron production using a Doppler shifter at J-PARC Open Access

Imajo, S; Mishima, K; Kitaguchi, M; Iwashita, Y; Yamada, NL; Hino, M; Oda, T; Ino, T; Shimizu, HM; Yamashita, S; Katayama, R

PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS Vol. 2016 ( 1 ) 2016.1

Publisher：Progress of Theoretical and Experimental Physics

We have constructed a Doppler-shifter-type pulsed ultra-cold neutron (UCN) source at the Materials and Life Science Experiment Facility of the Japan Proton Accelerator Research Complex. Very cold neutrons (VCNs) with 136 m s-1 velocity in a neutron beam supplied by a pulsed neutron source are decelerated by reflection on an m = 10 wide-band multilayer mirror, yielding pulsed UCNs. The mirror is fixed to the tip of a 2000 rpm rotating arm moving with 68 m s-1 velocity in the same direction as the VCNs. The repetition frequency of the pulsed UCNs is 8.33 Hz and the time width of the pulse at production is 4.4 ms. In order to increase the UCN flux, a supermirror guide, wide-band monochromatic mirrors, focus guides, and a UCN extraction guide have been newly installed or improved. The 1 MW-equivalent count rate of the output neutrons with longitudinal wavelengths longer than 58 nm is 1.6 × 102 cps, while that of the true UCNs is 80 cps. The spatial density at production is 1.4 UCN cm-3. This new UCN source enables us to research and develop apparatuses necessary for the investigation of the neutron electric dipole moment.

DOI： 10.1093/ptep/ptv177

Performance test of the Ultracold Neutron Rebuncher

Imajo Sohei, Iwashita Yoshihisa, Mishima Kenji, Kitaguchi Masaaki, Shimizu Hirohiko M., Ino Takashi, Yamashita Satoru, NOP collaboration

Meeting Abstracts of the Physical Society of Japan Vol. 71.2 ( 0 ) page： 64 - 64 2016

Possibility of crystal and experimental system for measurement of inner electric field

Nakaji Masaya, Itoh Shigeyasu, Kitaguchi Masaaki, Shimizu Hirohiko

Meeting Abstracts of the Physical Society of Japan Vol. 71.2 ( 0 ) page： 277 - 277 2016

The design of the beam line of the Nagoya University Accelerator-driven Neutron Source

Ito Ikuya, Shimizu Hirohiko, Kitaguchi Masaaki, Hirota Katsuya, Ichikawa Go, Yoshiaki Kiyanagi, Tsuchida Kazuki, Uritani Akira, Yoshihashi Sachiko, Watanabe Kenichi, Yamazaki Jun, Miwata Haruhiko, Yamagata Yutaka, Iwashita Yoshihisa

Meeting Abstracts of the Physical Society of Japan Vol. 71.2 ( 0 ) page： 295 - 295 2016

Neutron lifetime measurement at J-PARC/BL05 : Development of the detector

Tomita T., Sumi N., Morishita A., Otono H., Yoshioka T., Kitahara R., Iwashita Y., Yamada T., Yamashita S., Hirota K., Shimizu H., Yokohashi M., Kitaguchi M., Oide H., Shima T., Mishima K., Taketani K., Ino T.

Meeting Abstracts of the Physical Society of Japan Vol. 71.2 ( 0 ) page： 59 - 59 2016

Neutron lifetime measurement at J-PARC/BL05: Systematic uncertainties and result

Yamada Takahito, Ieki Sei, Nagakura Naoki, Yamashita Satoru, Sumino Hirochika, Shimizu Hirohiko M., Hirota Katsuya, Yokohashi Mami, Kitaguchi Masaaki, Yoshioka Tamaki, Otono Hidetoshi, Tomita Tatsuhiko, Sumi Naoyuki, Morishita Aya, Iwashita Yoshihisa, Kitahara Ryunosuke, Oide Hideyuki, Shima Tatsushi, Mishima Kenji, Ino Takashi, Taketani Kaoru, Seki Yoshichika

Meeting Abstracts of the Physical Society of Japan Vol. 71.2 ( 0 ) page： 61 - 61 2016

Measurement of <sup>14</sup>N(n,p)<sup>14</sup>C cross section using cold neutron beam at J-PARC/MLF/BL05

Kitahara Ryunosuke, Iwashita Yoshihisa, Shimizu Hirohiko, Hirota Katsuya, Yokohashi Mami, Kitaguchi Masaaki, Yoshioka Tamaki, Otono Hidetoshi, Morishita Aya, Sumi Naoyuki, Tomita Tatsuhiko, Yamashita Toru, Nagakura Naoki, Ieki Sei, Yamada Takahito, Shima Tatsushi, Seki Yoshichika, Oide Hideyuki, Mishima Kenji, Taketani Kaoru, Ino Takashi

Meeting Abstracts of the Physical Society of Japan Vol. 71.2 ( 0 ) page： 174 - 174 2016

Measurement of the inner electric field of Bi<sub>12</sub>GeO<sub>20</sub>for the measurement of EDM of a neutron

Itoh Shigeyasu, Nakaji Masaya, Kitaguchi Masaaki, Shimizu Hirohiko

Meeting Abstracts of the Physical Society of Japan Vol. 71.2 ( 0 ) page： 276 - 276 2016

Neutron lifetime measurement at J-PARC/BL05 : Development of large acceptance neutron optics

Yokohashi Mami, Hirota Katsuya, Shimizu Hirohiko, Kitaguchi Masaaki, Kitahara Ryunosuke, Iwashita Yoshihisa, Yoshioka Tamaki, Otono Hidetoshi, Yamada Takahito, Yamashita Satoru, Seki Yoshichika, Oide Hideyuki, Mishima Kenji, Taketani Kaoru, Ino Takashi

Meeting Abstracts of the Physical Society of Japan Vol. 71.2 ( 0 ) page： 79 - 79 2016

20pAP-8 Neutron lifetime measurement at J-PARC/BL05 : Neutron optics for large beam acceptance

Yokohashi Mami, Hirota Katsuya, Shimizu Hirohiko, Kitaguchi Masaaki, Kitahara Ryunosuke, Iwashita Yoshihisa, Yoshioka Tamaki, Otono Hidetoshi, Yamada Takahito, Yamashita Satoru, Seki Yoshichika, Oide Hidetoshi, Mishima Kenji, Taketani Kaoru, Ino Takashi

Meeting Abstracts of the Physical Society of Japan Vol. 71.1 ( 0 ) page： 585 2016

20pAP-7 Neutron lifetime measurement at J-PARC/BL05 : Development of spin flip chopper

Kitahara Ryunosuke, Iwashita Yoshihisa, Yokohashi Mami, Hirota Katsuya, Shimizu Hirohiko, Kitaguchi Masaaki, Yoshioka Tamaki, Otono Hidetoshi, Yamada Takahito, Yamashita Satoru, Seki Yoshichika, Oide Hidetoshi, Mishima Kenji, Taketani Kaoru, Ino Takashi

Meeting Abstracts of the Physical Society of Japan Vol. 71.1 ( 0 ) page： 584 2016

20pAH-9 Neutron lifetime measurement at J-PARC/BL05 : Data analysis 2014/2015

Sumi N., Tanaka G., Tomita T., Morishita A., Yoshioka T., Otono H., Kitahara R., Iwashita Y., Yamada T., Ieki S., Nagakura N., Yokoyama H., Yamashita S., Sumino H., Sakakibara R., Sugino T., Yokohashi M., Hirota K., Shimizu H., Kitaguchi M., Oide H., Seki Y., Shima T., Mishima K., Taketani K., Ino T.

Meeting Abstracts of the Physical Society of Japan Vol. 71.1 ( 0 ) page： 108 2016

20pAH-8 Neutron lifetime measurement at J-PARC/BL05 : Evaluation of efficiency for a beta-decay event by simulation

Nagakura Naoki, Yamada Takahito, Yokoyama Harumichi, Ieki Sei, Yamashita Satoru, Seki Yoshichika, Sumino Hirochika, Shimizu Hirohiko M., Hirota Katsuya, Sakakibara Risa, Sugino Tomoaki, Yokohashi Mami, Kitaguchi Masaaki, Yoshioka Tamaki, Otono Hidetoshi, Tanaka Genki, Sumi Naoyuki, Tomita Tatsuhiko, Morishita Aya, Iwashita Yoshihisa, Kitahara Ryunosuke, Oide Hideyuki, Shima Tatsushi, Mishima Kenji, Ino Takashi, Taketani Kaoru

Meeting Abstracts of the Physical Society of Japan Vol. 71.1 ( 0 ) page： 107 2016

20pAH-12 Development of ultracold neutron rebuncher with a neutron Doppler shifter at J-PARC MLF

Imajo S., Iwashita Y., Mishima K., Kitaguchi M., Shimizu H. M., Ino T., Yamada N. L., Yamashita S., Katayama R., NOP collaboration

Meeting Abstracts of the Physical Society of Japan Vol. 71.1 ( 0 ) page： 110 2016

20pAH-10 Evaluation of neutron flux for the neutron lifetime measurement at J-PARC/BL05

Mishima Kenji, Ino Takashi, Taketani Kaoru, Yamashita Satoru, Yamada Takahito, Yokoyama Harumichi, Ieki Sei, Nagakura Naoki, Sumino Hirochika, Shimizu Hirohiko M., Hirota Katsuya, Sakakibara Risa, Sugino Tomoaki, Yokohashi Mami, Kitaguchi Masaaki, Yoshioka Tamaki, Otono Hidetoshi, Tanaka Genki, Tomita Tatsuhiko, Sumi Naoyuki, Morishita Aya, Iwashita Yoshihisa, Kitahara Ryunosuke, Oide Hideyuki, Shima Tatsushi, Seki Yoshichika

Meeting Abstracts of the Physical Society of Japan Vol. 71.1 ( 0 ) page： 109 2016

Measurement of neutron scattering with noble gas to search for a short-range unknown force at J-PARC

Oi N., Shimizu H. M., Hirota K., Kitaguchi M., Haddock C. C., Snow W. M., Yoshioka T., Matsumoto S., Mishima K., Ino T., Shima T.

Meeting Abstracts of the Physical Society of Japan Vol. 71.2 ( 0 ) page： 256 - 256 2016

Measurement of neutron lifetime at J-PARC/BL05 : Signal Identification

Ieki Sei, Yamada Takahito, Nagakura Naoki, Yamashita Satoru, Seki Yoshichika, Sumino Hirochika, Shimizu Hirohiko, Hirota Katsuya, Yokohashi Mami, Kitaguchi Masaaki, Yoshioka Tamaki, Otono Hidetoshi, Tomita Tatsuhiko, Sumi Naoyuki, Morishita Aya, Iwashita Yoshihisa, Kitahara Ryunosuke, Oide Hideyuki, Shima Tatsushi, Mishima Kenji, Ino Takashi, Taketani Kaoru

Meeting Abstracts of the Physical Society of Japan Vol. 71.2 ( 0 ) page： 60 - 60 2016

22aAH-4 Neutron lifetime measurement at J-PARC/BL05 : Development of the detector

Morishita A., Sumi N., Tomita T., Otono H., Yoshioka T., Kitahara R., Iwashita Y., Yamada T., Yokoyama H., Yamashita S., Hirota K., Shimizu H., Kitaguchi M., Oide H., Shima T., Mishima K., Taketani K., Ino T.

Meeting Abstracts of the Physical Society of Japan Vol. 71.1 ( 0 ) page： 145 2016

22pAX-5 Suppression of a systematic with beam spin flipping for the MTV experiment

Sakamoto Y., Baba H., Enokizono A., Goto F., Hatori M., Inaba S., Kawamura H., Kitaguchi M., Masuda H., Nagashima T., Ninomiya K., Openshaw R., Ozaki S., Pearson M., Shimizu H., Shimizu Y., Tanaka Y., Tanuma R., Watanabe E., Yokohashi M., Murata J.

Meeting Abstracts of the Physical Society of Japan Vol. 71.1 ( 0 ) page： 448 2016

22pAX-4 Measurement and analysis of Xe(n,γ) reaction for T-violation search experiment in compound neutron resonance

Okudaira T., Shimizu H. M., Kitaguchi M., Hirota K., Ichikawa G., Okada A., Goto F., Nagamoto K., Takada S., Yoshioka T., Ino T., Asahi K., Momose T., Iwata T., Sakai K., Hino M., Shima T., Yamagata Y.

Meeting Abstracts of the Physical Society of Japan Vol. 71.1 ( 0 ) page： 447 2016

22pAX-2 Search for CP-violation effects in compound neutron resonance : current status and future prospect

Kitaguchi M., Shimizu H. M., Hirota K., Ichikawa G., Okudaira T., Okada A., Goto F., Nagamoto K., Takada H., Yoshioka T., Ino T., Asahi K., Momose T., Iwata T., Sakai K., Hino M., Shima T., Yamagata Y.

Meeting Abstracts of the Physical Society of Japan Vol. 71.1 ( 0 ) page： 446 2016

22pAX-1 Behavior of neutron spin in polarized targets for the measurement of T-violating effects in compound nuclei

Shimizu H. M., Kitaguchi M., Hirota K., Ichikawa G., Okudaira T., Okada A., Goto F., Nagamoto K., Takada H., Yoshioka T., Ino T., Momose T., Iwata T., Miyachi Y., Shima T., Yamagata Y., Gudkov V. P., Snow W. M., Plaster B., Bowman J. D., Sakai K., Harada H., Kimura A., Toh Y., Asahi K., Hino M.

Meeting Abstracts of the Physical Society of Japan Vol. 71.1 ( 0 ) page： 445 2016

The MTV experiment: From T violation to lorentz violation Open Access

Murata J., Baba H., Behr J.A., Goto F., Inaba S., Kawamura H., Kitaguchi M., Levy C.D.P., Masuda H., Nakaya Y., Ninomiya K., Onishi J., Openshaw R., Ozaki S., Pearson M., Sakamoto Y., Shimizu H., Shimizu Y., Tanaka S., Tanaka Y., Tanuma R., Totsuka Y., Watanabe E., Yokohashi M.

Proceedings of Science Vol. 2016-September 2016

Publisher：Proceedings of Science

The MTV (Mott Polarimetry for T-Violation) experiment is running at TRIUMF-ISAC (Isotope Separator and ACcelerator), searching for a large T violation in polarized 8Li β decay via measurements of the triple vector correlation, R, in the β decay rate function. The left/right backward scattering asymmetry of Mott scattering from a thin metal foil is measured using an electron tracking detector including a cylindrical drift chamber (CDC). To achieve 10-ppm precision in the Mott scattering asymmetry, we performed multiple studies on the expected systematic effects. The sources of the systematics have been identified and calibration systems have been developed to evaluate the fake effects. The first physics data was collected in 2016 and significantly improved on the result of our previous measurement, which achieved 100-ppm precision in 2010 using the first generation detector (planer drift chamber) at TRIUMF. The data measurement status, together with the results of the systematics studies, is described here. In addition to the T violation, we are preparing to test the Lorentz invariance in the weak sector via our Mott analyzer system. Unexplored Lorentz violating correlations can be tested using the MTV experimental setup. The testing principle and preparation status are also described here.

DOI： 10.22323/1.281.0185

Development of ultracold neutron accelerator for time focusing of pulsed neutrons Open Access

Imajo S., Iwashita Y., Kitaguchi M., Shimizu H.M., Mishima K., Ino T., Yamashita S.

Proceedings of the 28th Linear Accelerator Conference, LINAC 2016 page： 56 - 58 2016

Publisher：Proceedings of the 28th Linear Accelerator Conference, LINAC 2016

Low energy neutron accelerator can be realized by the combination of an adiabatic fast passage spin flipper and a gradient magnetic field. Neutrons have magnetic moments, so that the accumulated potential energies are not canceled before and after passage of a magnetic field and their kinetic energies change in case their spins are flipped in the field. This accelerator handles lower kinetic energy neutrons than approximately 300 neV. Currently we have developed the advanced version which makes it possible to handle broader kinetic energy range. The design and measured characteristics are described.

DOI： 10.18429/JACoW-LINAC2016-MOOP07

Measurement of neutron scattering from noble gas to search for a short-range unknown force Open Access

Oi N., Shimizu H.M., Hirota K., Kitaguchi M., Haddock C.C., Snow W.M., Yoshioka T., Matsumoto S., Mishima K., Ino T., Shima T.

Proceedings of Science Vol. 2016-September 2016

Publisher：Proceedings of Science

We are searching for an unknown force that could couple to mass using neutron scattering from a noble gas. The neutron is a chargeless massive particle with a long lifetime, which consequently is suitable for the precision measurement of a small interaction with a range of the order of 1nm by measurements of the momentum transfer distribution. We measured neutron scattering at the low-divergence beam branch on the BL05 NOP beamline in the Materials and Life Science Experimental Facility (MLF) at the Japan Proton Accelerator Research Complex (J-PARC). We measured 105 scattering events and report our most recent analysis.

DOI： 10.22323/1.294.0050

Measurement of angular correlations in the (n, γ) reaction for T Violation Search Open Access

Okudaira T., Shimizu H.M., Kitaguchi M., Hirota K., Takada S., Yamamoto T., Okada A., Yoshioka T., Ino T., Sakai K., Asahi K., Momose T., Iwata T., Hino M., Shima T., Yamagata Y.

Proceedings of Science Vol. 2016-September 2016

Publisher：Proceedings of Science

Large enhanced P-violations was discovered in several compound nuclei. A mechanism of P-violation can be applied to enhancement of T-violation in compound nucleus. We plan the experiment for sensitive T-violation search, however, the mechanism of P-violation(s-p mixing) has not been verified in detail yet and the spin factor K(J) has not been measured in candidate nuclei for T-violation search. We need to measure angular distributions in the (n, y) reaction for verification of s-p mixing and determination of K(J) as a feasibility study for the T-violation search. The (n,γ) reaction of 139La which is one of the candidate nuclei was measured with 4π germanium spectrometer in J-PARC/MLF/ANNRI. A neutron spectrum and a γ-ray spectrum for 139La was obtained.

DOI： 10.22323/1.281.0188

Discrete symmetry tests in neutron-induced compound states Open Access

Shimizu H.M., Snow W.M., Gudkov V.P., Bowman J.D., Curole J., Goodson B.M., Harada H., Hautle P., Hino M., Hirota K., Ichikawa G., Ino T., Ishimoto S., Iwata T., Kimura A., Kitaguchi M., Kiyanagi Y., Koga J., Mishima K., Miyachi Y., Momose T., Morishima T., Nagamoto K., Okada A., Okudaira T., Penttila S., Plaster B., Sakai K., Schaper D., Takada S., Taketani K., Tong X., Tremsin A.S., Yamagata Y., Yamamoto T., Yamanaka N., Yokohashi M., Yoshioka T.

Proceedings of Science Vol. 2016-September 2016

Precise neutron lifetime experiment using pulsed neutron beams at J-PARC Open Access

Nagakura N., Hirota K., Ieki S., Ino T., Iwashita Y., Kitaguchi M., Kitahara R., Mishima K., Morishita A., Oide H., Otono H., Sakakibara R., Seki Y., Shima T., Shimizu H.M., Sugino T., Sumi N., Sumino H., Taketani K., Tanaka G., Tomita T., Yamada T., Yamashita S., Yokohashi M., Yoshioka T.

Proceedings of Science Vol. 2016-September 2016

Publisher：Proceedings of Science

The neutron lifetime (τn) is one of the basic parameters in the weak interaction, and is used for predicting the light element abundance in the early universe. Our group developed a new setup to measure τn with the goal precision of 0.1% at the polarized beam branch BL05 of MLF, J-PARC. The commissioning data was acquired in 2014 and 2015, and the first set of data to evaluate τn in 2016, which is expected to yield a statistical uncertainty of O(1)%. This paper presents the current analysis results and the future plans to achieve our goal precision.

DOI： 10.22323/1.281.0191

Feasibility study of neutron wavelength compressor for edm measurement Open Access

Kitaguchi M., Iwashita Y., Shimizu H.

Proceedings of Science Vol. 2016-September 2016

Publisher：Proceedings of Science

Neutrons can be accelerate and/or decelerate by using spin flip in the magnetic field. Controlling the number of spin-flips in the series of flippers enables us to change the energy of the acceleration/deceleration. The distribution of velocity of these neutrons can be concentrated by accelerating properly in the middle of the transport. The width of wavelength of the neutrons is compressed to improve the production of ultra-cold neutrons by superthermal method by using superfluid He-II. This has the advantage to improve the sensitivity of neutron EDM search.

DOI： 10.22323/1.281.0180

Development of time projection chamber for precise neutron lifetime measurement using pulsed cold neutron beams Open Access

Arimoto, Y; Higashi, N; Igarashi, Y; Iwashita, Y; Ino, T; Katayama, R; Kitaguchi, M; Kitahara, R; Matsumura, H; Mishima, K; Nagakura, N; Oide, H; Otono, H; Sakakibara, R; Shima, T; Shimizu, HM; Sugino, T; Sumi, N; Sumino, H; Taketani, K; Tanaka, G; Tanaka, M; Tauchi, K; Toyoda, A; Tomita, T; Yamada, T; Yamashita, S; Yokoyama, H; Yoshioka, T

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT Vol. 799 page： 187 - 196 2015.11

Publisher：Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

A new time projection chamber (TPC) was developed for neutron lifetime measurement using a pulsed cold neutron spallation source at the Japan Proton Accelerator Research Complex (J-PARC). Managing considerable background events from natural sources and the beam radioactivity is a challenging aspect of this measurement. To overcome this problem, the developed TPC has unprecedented features such as the use of polyether-ether-ketone plates in the support structure and internal surfaces covered with <sup>6</sup>Li-enriched tiles to absorb outlier neutrons. In this paper, the design and performance of the new TPC are reported in detail.

DOI： 10.1016/j.nima.2015.08.006

Performances of JEM-EUSO: angular reconstruction: The JEM-EUSO Collaboration Open Access

Adams J.H., Ahmad S., Albert J.N., Allard D., Anchordoqui L., Andreev V., Anzalone A., Arai Y., Asano K., Ave Pernas M., Baragatti P., Barrillon P., Batsch T., Bayer J., Bechini R., Belenguer T., Bellotti R., Belov K., Berlind A.A., Bertaina M., Biermann P.L., Biktemerova S., Blaksley C., Blanc N., Błȩcki J., Blin-Bondil S., Blümer J., Bobik P., Bogomilov M., Bonamente M., Briggs M.S., Briz S., Bruno A., Cafagna F., Campana D., Capdevielle J.N., Caruso R., Casolino M., Cassardo C., Castellinic G., Catalano C., Catalano G., Cellino A., Chikawa M., Christl M.J., Cline D., Connaughton V., Conti L., Cordero G., Crawford H.J., Cremonini R., Csorna S., Dagoret-Campagne S., de Castro A.J., De Donato C., de la Taille C., De Santis C., del Peral L., Dell’Oro A., De Simone N., Di Martino M., Distratis G., Dulucq F., Dupieux M., Ebersoldt A., Ebisuzaki T., Engel R., Falk S., Fang K., Fenu F., Fernández-Gómez I., Ferrarese S., Finco D., Flamini M., Fornaro C., Franceschi A., Fujimoto J., Fukushima M., Galeotti P., Garipov G., Geary J., Gelmini G., Giraudo G., Gonchar M., González Alvarado C., Gorodetzky P., Guarino F., Guzmán A., Hachisu Y., Harlov B., Haungs A., Hernández Carretero J., Higashide K., Ikeda D., Ikeda H., Inoue N., Inoue S., Insolia A., Isgrò F.

Experimental Astronomy Vol. 40 ( 1 ) page： 153 - 177 2015.11

Publisher：Experimental Astronomy

Mounted on the International Space Station(ISS), the Extreme Universe Space Observatory, on-board the Japanese Experimental Module (JEM-EUSO), relies on the well established fluorescence technique to observe Extensive Air Showers (EAS) developing in the earth’s atmosphere. Focusing on the detection of Ultra High Energy Cosmic Rays (UHECR) in the decade of 1020eV, JEM-EUSO will face new challenges by applying this technique from space. The EUSO Simulation and Analysis Framework (ESAF) has been developed in this context to provide a full end-to-end simulation frame, and assess the overall performance of the detector. Within ESAF, angular reconstruction can be separated into two conceptually different steps. The first step is pattern recognition, or filtering, of the signal to separate it from the background. The second step is to perform different types of fitting in order to search for the relevant geometrical parameters that best describe the previously selected signal. In this paper, we discuss some of the techniques we have implemented in ESAF to perform the geometrical reconstruction of EAS seen by JEM-EUSO. We also conduct thorough tests to assess the performances of these techniques in conditions which are relevant to the scope of the JEM-EUSO mission. We conclude by showing the expected angular resolution in the energy range that JEM-EUSO is expected to observe.

DOI： 10.1007/s10686-013-9371-0

Calibration aspects of the JEM-EUSO mission

Adams, JH Jr; Ahmad, S; Albert, JN; Allard, D; Anchordoqui, L; Andreev, V; Anzalone, A; Arai, Y; Asano, K; Pernas, MA; Baragatti, P; Barrillon, P; Batsch, T; Bayer, J; Bechini, R; Belenguer, T; Bellotti, R; Belov, K; Berlind, AA; Bertaina, M; Biermann, PL; Biktemerova, S; Blaksley, C; Blanc, N; Blecki, J; Blin-Bondil, S; Blümer, J; Bobik, P; Bogomilov, M; Bonamente, M; Briggs, MS; Briz, S; Bruno, A; Cafagna, F; Campana, D; Capdevielle, JN; Caruso, R; Casolino, M; Cassardo, C; Castellini, G; Catalano, C; Catalano, O; Cellino, A; Chikawa, M; Christl, MJ; Cline, D; Connaughton, V; Conti, L; Cordero, G; Crawford, HJ; Cremonini, R; Csorna, S; Dagoret-Campagne, S; de Castro, AJ; de Donato, C; de la Taille, C; de Santis, C; del Peral, L; Dell'Oro, A; De Simone, N; Di Martino, M; Distratis, G; Dulucq, F; Dupieux, M; Ebersoldt, A; Ebisuzaki, T; Engel, R; Falk, S; Fang, K; Fenu, F; Fernández-Gómez, I; Ferrarese, S; Finco, D; Flamini, M; Fornaro, C; Franceschi, A; Fujimoto, J; Fukushima, M; Galeotti, P; Garipov, G; Geary, J; Gelmini, G; Giraudo, G; Gonchar, M; Alvarado, CG; Gorodetzky, P; Guarino, F; Guzmán, A; Hachisu, Y; Harlov, B; Haungs, A; Carretero, JH; Higashide, K; Ikeda, D; Ikeda, H; Inoue, N; Inoue, S; Insolia, A; Isgrò, F; Itow, Y; Joven, E; Judd, EG; Jung, A; Kajino, F; Kajino, T; Kaneko, I; Karadzhov, Y; Karczmarczyk, J; Karus, M; Katahira, K; Kawai, K; Kawasaki, Y; Keilhauer, B; Khrenov, BA; Kim, JS; Kim, SW; Kim, SW; Kleifges, M; Klimov, PA; Kolev, D; Kreykenbohm, I; Kudela, K; Kurihara, Y; Kusenko, A; Kuznetsov, E; Lacombe, M; Lachaud, C; Lee, J; Licandro, J; Lim, H; López, F; Maccarone, MC; Mannheim, K; Maravilla, D; Marcelli, L; Marini, A; Martinez, O; Masciantonio, G; Mase, K; Matev, R; Medina-Tanco, G; Mernik, T; Miyamoto, H; Miyazaki, Y; Mizumoto, Y; Modestino, G; Monaco, A; Monnier-Ragaigne, D; de los Ríos, JAM; Moretto, C; Morozenko, VS; Mot, B; Murakami, T; Nagano, M; Nagata, M; Nagataki, S; Nakamura, T; Napolitano, T; Naumov, D; Nava, R; Neronov, A; Nomoto, K; Nonaka, T; Ogawa, T; Ogio, S; Ohmori, H; Olinto, AV; Orleanski, P; Osteria, G; Panasyuk, MI; Parizot, E; Park, IH; Park, HW; Pastircak, B; Patzak, T; Paul, T; Pennypacker, C; Cano, SP; Peter, T; Picozza, P; Pierog, T; Piotrowski, LW; Piraino, S; Plebaniak, Z; Pollini, A; Prat, P; Prévôt, G; Pierog, T; Piotrowski, LW; Piraino, S; Plebaniak, Z; Pollini, A; Prat, P; Prévôt, G; Prieto, H; Putis, M; Reardon, P; Reyes, M; Ricci, M; Rodriguez, I; Rodríguez, MD; Frías, MDR; Ronga, F; Roth, M; Rothkaehl, H; Roudil, G; Rusinov, I; Rybczynski, M; Sabau, MD; Cano, GS; Sagawa, H; Saito, A; Sakaki, N; Sakata, M; Salazar, H; Sánchez, S; Santangelo, A; Cruz, LS; Palomino, MS; Saprykin, O; Sarazin, F; Sato, H; Sato, M; Schanz, T; Schieler, H; Scotti, V; Segreto, A; Selmane, S; Semikoz, D; Serra, M; Sharakin, S; Shibata, T; Shimizu, HM; Shinozaki, K; Shirahama, T; Siemieniec-Ozieblo, G; López, HHS; Sledd, J; Slominska, K; Sobey, A; Sugiyama, T; Supanitsky, D; Suzuki, M; Szabelska, B; Szabelski, J; Tajima, F; Tajima, N; Tajima, T; Takahashi, Y; Takami, H; Takeda, M; Takizawa, Y; Tenzer, C; Tibolla, O; Tkachev, L; Tokuno, H; Tomida, T; Tone, N; Toscano, S; Trillaud, F; Tsenov, R; Tsunesada, Y; Tsuno, K; Tymieniecka, T; Uchihori, Y; Unger, M; Vaduvescu, O; Valdés-Galicia, JF; Vallania, P; Valore, L; Vankova, G; Vigorito, C; Villaseñor, L; von Ballmoos, P; Wada, S; Watanabe, J; Watanabe, S; Watts, J ; Weber, M; Weiler, TJ; Wibig, T; Wiencke, L; Wille, M; Wilms, J; Wlodarczyk, Z; Yamamoto, T; Yamamoto, Y; Yang, J; Yano, H; Yashin, IV; Yonetoku, D; Yoshida, K; Yoshida, S; Young, R; Zotov, MY; Marchi, AZ

EXPERIMENTAL ASTRONOMY Vol. 40 ( 1 ) page： 91 - 116 2015.11

Publisher：Experimental Astronomy

The JEM-EUSO telescope will be, after calibration, a very accurate instrument which yields the number of received photons from the number of measured photo-electrons. The project is in phase A (demonstration of the concept) including already operating prototype instruments, i.e. many parts of the instrument have been constructed and tested. Calibration is a crucial part of the instrument and its use. The focal surface (FS) of the JEM-EUSO telescope will consist of about 5000 photo-multiplier tubes (PMTs), which have to be well calibrated to reach the required accuracy in reconstructing the air-shower parameters. The optics system consists of 3 plastic Fresnel (double-sided) lenses of 2.5 m diameter. The aim of the calibration system is to measure the efficiencies (transmittances) of the optics and absolute efficiencies of the entire focal surface detector. The system consists of 3 main components: (i) Pre-flight calibration devices on ground, where the efficiency and gain of the PMTs will be measured absolutely and also the transmittance of the optics will be. (ii) On-board relative calibration system applying two methods: a) operating during the day when the JEM-EUSO lid will be closed with small light sources on board. b) operating during the night, together with data taking: the monitoring of the background rate over identical sites. (iii) Absolute in-flight calibration, again, applying two methods: a) measurement of the moon light, reflected on high altitude, high albedo clouds. b) measurements of calibrated flashes and tracks produced by the Global Light System (GLS). Some details of each calibration method will be described in this paper.

DOI： 10.1007/s10686-015-9453-2

Ultra high energy photons and neutrinos with JEM-EUSO (vol 40, pg 215, 2015) Open Access

Adams, JH; Ahmad, S; Albert, JN; Allard, D; Anchordoqui, L; Andreev, V; Anzalone, A; Arai, Y; Asano, K; Pernas, MA; Baragatti, P; Barrillon, P; Batsch, T; Bayer, J; Bechini, R; Belenguer, T; Bellotti, R; Belov, K; Berlind, AA; Bertaina, M; Biermann, PL; Biktemerova, S; Blaksley, C; Blanc, N; Blecki, J; Blin-Bondil, S; Blümer, J; Bobik, P; Bogomilov, M; Bonamente, M; Briggs, MS; Briz, S; Bruno, A; Cafagna, F; Campana, D; Capdevielle, JN; Caruso, R; Casolino, M; Cassardo, C; Castellini, G; Catalano, C; Catalano, O; Cellino, A; Chikawa, M; Christl, MJ; Cline, D; Connaughton, V; Conti, L; Cordero, G; Crawford, HJ; Cremonini, R; Csorna, S; Dagoret-Campagne, S; de Castro, AJ; De Donato, C; de la Taille, C; De Santis, C; del Peral, L; Dell'Oro, A; De Simone, N; Di Martino, M; Distratis, G; Dulucq, F; Dupieux, M; Ebersoldt, A; Ebisuzaki, T; Engel, R; Falk, S; Fang, K; Fenu, F; Fernández-Gómez, I; Ferrarese, S; Finco, D; Flamini, M; Fornaro, C; Franceschi, A; Fujimoto, J; Fukushima, M; Galeotti, P; Garipov, G; Geary, J; Gelmini, G; Giraudo, G; Gonchar, M; Alvarado, CG; Gorodetzky, P; Guarino, F; Guzmán, A; Hachisu, Y; Harlov, B; Haungs, A; Carretero, JH; Higashide, K; Ikeda, D; Ikeda, H; Inoue, N; Inoue, S; Insolia, A; Isgr'o, F; Itow, Y; Joven, E; Judd, EG; Jung, A; Kajino, F; Kajino, T; Kaneko, I; Karadzhov, Y; Karczmarczyk, J; Karus, M; Katahira, K; Kawai, K; Kawasaki, Y; Keilhauer, B; Khrenov, BA; Kim, JS; Kim, SW; Kim, SW; Kleifges, M; Klimov, PA; Kolev, D; Kreykenbohm, I; Kudela, K; Kurihara, Y; Kusenko, A; Kuznetsov, E; Lacombe, M; Lachaud, C; Lee, J; Licandro, J; Lim, H; López, F; Maccarone, MC; Mannheim, K; Maravilla, D; Marcelli, L; Marini, A; Martinez, O; Masciantonio, G; Mase, K; Matev, R; Medina-Tanco, G; Mernik, T; Miyamoto, H; Miyazaki, Y; Mizumoto, Y; Modestino, G; Monaco, A; Monnier-Ragaigne, D; de los Ríos, JAM; Moretto, C; Morozenko, VS; Mot, B; Murakami, T; Nagano, M; Nagata, M; Nagataki, S; Nakamura, T; Napolitano, T; Naumov, D; Nava, R; Neronov, A; Nomoto, K; Nonaka, T; Ogawa, T; Ogio, S; Ohmori, H; Olinto, AV; Orleanski, P; Osteria, G; Panasyuk, MI; Parizot, E; Park, IH; Park, HW; Pastircak, B; Patzak, T; Paul, T; Pennypacker, C; Cano, SP; Peter, T; Picozza, P; Pierog, T; Piotrowski, LW; Piraino, S; Plebaniak, Z; Pollini, A; Prat, P; Prévôt, G; Prieto, H; Putis, M; Reardon, P; Reyes, M; Ricci, M; Rodríguez, I; Frías, MDR; Ronga, F; Roth, M; Rothkaehl, H; Roudil, G; Rusinov, I; Rybczynski, M; Sabau, MD; Cano, GS; Sagawa, H; Saito, A; Sakaki, N; Sakata, M; Salazar, H; Sánchez, S; Santangelo, A; Crúz, LS; Palomino, MS; Saprykin, O; Sarazin, F; Sato, H; Sato, M; Schanz, T; Schieler, H; Scotti, V; Segreto, A; Selmane, S; Semikoz, D; Serra, M; Sharakin, S; Shibata, T; Shimizu, HM; Shinozaki, K; Shirahama, T; Siemieniec-Ozieblo, G; López, HHS; Sledd, J; Slominska, K; Sobey, A; Sugiyama, T; Supanitsky, AD; Suzuki, M; Szabelska, B; Szabelski, J; Tajima, F; Tajima, N; Tajima, T; Takahashi, Y; Takami, H; Takeda, M; Takizawa, Y; Tenzer, C; Tibolla, O; Tkachev, L; Tokuno, H; Tomida, T; Tone, N; Toscano, S; Trillaud, F; Tsenov, R; Tsunesada, Y; Tsuno, K; Tymieniecka, T; Uchihori, Y; Unger, M; Vaduvescu, O; Valdés-Galicia, JF; Vallania, P; Valore, L; Vankova, G; Vigorito, C; Villaseñor, L; von Ballmoos, P; Wada, S; Watanabe, J; Watanabe, S; Watts, J ; Weber, M; Weiler, TJ; Wibig, T; Wiencke, L; Wille, M; Wilms, J; Wlodarczyk, Z; Yamamoto, T; Yamamoto, Y; Yang, J; Yano, H; Yashin, IV; Yonetoku, D; Yoshida, K; Yoshida, S; Young, R; Zotov, MY; Marchi, AZ

EXPERIMENTAL ASTRONOMY Vol. 40 ( 1 ) page： 235 - 237 2015.11

Ultra high energy photons and neutrinos with JEM-EUSO

Supanitsky, AD; Medina-Tanco, G; Guzmán, A; Adams, JH ; Ahmad, S; Albert, JN; Allard, D; Anchordoqui, L; Andreev, V; Anzalone, A; Arai, Y; Asano, K; Pernas, MA; Barrillon, P; Batsch, T; Bayer, J; Bechini, R; Belenguer, T; Bellotti, R; Belov, K; Berlind, AA; Bertaina, M; Biermann, PL; Biktemerova, S; Blaksley, C; Blanc, N; Blecki, J; Blin-Bondil, S; Blümer, J; Bobik, P; Bogomilov, M; Bonamente, M; Briggs, MS; Briz, S; Bruno, A; Cafagna, F; Campana, D; Capdevielle, JN; Caruso, R; Casolino, M; Cassardo, C; Castellini, G; Catalano, C; Catalano, O; Cellino, A; Chikawa, M; Christl, MJ; Cline, D; Connaughton, V; Conti, L; Cordero, G; Crawford, HJ; Cremonini, R; Csorna, S; Dagoret-Campagne, S; de Castro, AJ; De Donato, C; de la Taille, C; De Santis, C; del Peral, L; Dell'Oro, A; De Simone, N; Di Martino, M; Distratis, G; Dulucq, F; Dupieux, M; Ebersoldt, A; Ebisuzaki, T; Engel, R; Falk, S; Fang, K; Fenu, F; Fernández-Gómez, I; Ferrarese, S; Finco, D; Flamini, M; Fornaro, C; Franceschi, A; Fujimoto, J; Fukushima, M; Galeotti, P; Garipov, G; Geary, J; Gelmini, G; Giraudo, G; Gonchari, M; Alvarado, CG; Gorodetzky, P; Guarino, F; Guzmán, A; Hachisu, Y; Harlov, B; Haungs, A; Carretero, JH; Ikeda, D; Ikeda, H; Inoue, N; Inoue, S; Insolia, A; Isgrò, F; Itowen, Y; Joven, E; Judd, EG; Jung, A; Kajino, F; Kajino, T; Kaneko, I; Karadzhov, Y; Karczmarczyk, J; Karus, M; Katahira, K; Kawai, K; Kawasaki, Y; Keilhauer, B; Khrenov, BA; Kim, JS; Kim, SW; Kim, SW; Kleifges, M; Klimov, PA; Kolev, D; Kreykenbohm, I; Kudela, K; Kurihara, Y; Kusenko, A; Kuznetsov, E; Lacombe, M; Lachaud, C; Lee, J; Licandro, J; Lim, H; López, F; Maccarone, MC; Mannheim, K; Maravilla, D; Marcelli, L; Marini, A; Martinez, O; Masciantonio, G; Mase, K; Matev, R; Medina-Tanco, G; Mernik, T; Miyamoto, H; Miyazaki, Y; Mizumoto, Y; Modestino, G; Monaco, A; Monnier-Ragaigne, D; de los Ríos, JAM; Moretto, C; Morozenko, VS; Mot, B; Murakami, T; Nagano, M; Nagata, M; Nagataki, S; Nakamura, T; Napolitano, T; Naumov, D; Nava, R; Neronov, A; Nomoto, K; Nonaka, T; Ogawa, T; Ogio, S; Ohmori, H; Olinto, AV; Orleanski, P; Osteria, G; Panasyuk, MI; Parizot, E; Park, IH; Park, HW; Pastircak, B; Patzak, T; Paul, T; Pennypacker, C; Cano, SP; Peter, T; Picozza, P; Pierog, T; Piotrowski, LW; Piraino, S; Plebaniak, Z; Pollini, A; Prat, P; Prévôt, G; Prieto, H; Putis, M; Reardon, P; Reyes, M; Ricci, M; Rodríguez, I; Frías, MDR; Ronga, F; Roth, M; Rothkaehl, H; Roudil, G; Rusinov, I; Rybczynski, M; Sabau, MD; Cano, GS; Sagawa, H; Saito, A; Sakaki, N; Sakata, M; Salazar, H; Sánchez, S; Santangelo, A; Crúz, LS; Palomino, MS; Saprykin, O; Sarazin, F; Sato, H; Sato, M; Schanz, T; Schieler, H; Scotti, V; Segreto, A; Selmane, S; Semikoz, D; Serra, M; Sharakin, S; Shibata, T; Shimizu, HM; Shinozaki, K; Shirahama, T; Siemieniec-Ozieblo, G; López, HHS; Sledd, J; Slominska, K; Sobey, A; Sugiyama, T; Supanitsky, D; Suzuki, M; Szabelska, B; Szabelski, J; Tajima, F; Tajima, N; Tajima, T; Takahashi, Y; Takami, H; Takeda, M; Takizawa, Y; Tenzer, C; Tibolla, O; Tkachev, L; Tokuno, H; Tomida, T; Tone, N; Toscano, S; Trillaud, F; Tsenov, R; Tsunesada, Y; Tsuno, K; Tymieniecka, T; Uchihori, Y; Unger, M; Vaduvescu, O; Valdés-Galicia, JF; Vallania, P; Valore, L; Vankova, G; Vigorito, C; Villaseñor, L; von Ballmoos, P; Wada, S; Watanabe, J; Watanabe, S; Watts, J ; Weber, M; Weiler, TJ; Wibig, T; Wiencke, L; Wille, M; Wilms, J; Odarczyk, ZW; Yamamoto, T; Yamamoto, Y; Yang, J; Yano, H; Yashin, IV; Yonetoku, D; Yoshida, K; Yoshida, S; Young, R; Zotov, MY; Marchi, AZ

EXPERIMENTAL ASTRONOMY Vol. 40 ( 1 ) page： 215 - 233 2015.11

Publisher：Experimental Astronomy

Ultra high energy photons and neutrinos are carriers of very important astrophysical information. They may be produced at the sites of cosmic ray acceleration or during the propagation of the cosmic rays in the intergalactic medium. In contrast to charged cosmic rays, photon and neutrino arrival directions point to the production site because they are not deflected by the magnetic fields of the Galaxy or the intergalactic medium. In this work we study the characteristics of the longitudinal development of showers initiated by photons and neutrinos at the highest energies. These studies are relevant for development of techniques for neutrino and photon identification by the JEM-EUSO telescope. In particular, we study the possibility of observing the multi-peak structure of very deep horizontal neutrino showers with JEM-EUSO. We also discuss the possibility to determine the flavor content of the incident neutrino flux by taking advantage of the different characteristics of the longitudinal profiles generated by different type of neutrinos. This is of grate importance for the study of the fundamental properties of neutrinos at the highest energies. Regarding photons, we discuss the detectability of the cosmogenic component by JEM-EUSO and also estimate the expected upper limits on the photon fraction which can be obtained from the future JEM-EUSO data for the case in which there are no photons in the samples.

DOI： 10.1007/s10686-013-9353-2

The JEM-EUSO observation in cloudy conditions

Adams, JH Jr; Ahmad, S; Albert, JN; Allard, D; Anchordoqui, L; Andreev, V; Anzalone, A; Arai, Y; Asano, K; Pernas, MA; Baragatti, P; Barrillon, P; Batsch, T; Bayer, J; Bechini, R; Belenguer, T; Bellotti, R; Belov, K; Berlind, AA; Bertaina, M; Biermann, PL; Biktemerova, S; Blaksley, C; Blanc, N; Blecki, J; Blin-Bondil, S; Blümer, J; Bobik, P; Bogomilov, M; Bonamente, M; Briggs, MS; Briz, S; Bruno, A; Cafagna, F; Campana, D; Capdevielle, JN; Caruso, R; Casolino, M; Cassardo, C; Castellini, G; Catalano, C; Catalano, O; Cellino, A; Chikawa, M; Christl, MJ; Cline, D; Connaughton, V; Conti, L; Cordero, G; Crawford, HJ; Cremonini, R; Csorna, S; Dagoret-Campagne, S; de Castro, AJ; De Donato, C; de la Taille, C; De Santis, C; del Peral, L; Dell'Oro, A; De Simone, N; Di Martino, M; Distratis, G; Dulucq, F; Dupieux, M; Ebersoldt, A; Ebisuzaki, T; Engel, R; Falk, S; Fang, K; Fenu, F; Fernández-Gómez, I; Ferrarese, S; Finco, D; Flamini, M; Fornarodo, C; Franceschi, A; Fujimoto, J; Fukushima, M; Galeotti, P; Garipov, G; Geary, J; Gelmini, G; Giraudo, G; Gonchar, M; Alvarado, CG; Gorodetzky, P; Guarino, F; Guzmán, A; Hachisu, Y; Harlov, B; Haungs, A; Carretero, JH; Higashide, K; Ikeda, D; Ikeda, H; Inoue, N; Inoue, S; Insolia, A; Isgrò, F; Itow, Y; Joven, E; Judd, EG; Jung, A; Kajino, F; Kajino, T; Kaneko, I; Karadzhov, Y; Karczmarczyk, J; Karus, M; Katahira, K; Kawai, K; Kawasaki, Y; Keilhauer, B; Khrenov, BA; Kim, JS; Kim, SW; Kim, SW; Kleifges, M; Klimov, PA; Kolev, D; Kreykenbohm, I; Kudela, K; Kurihara, Y; Kusenko, A; Kuznetsov, E; Lacombe, M; Lachaud, C; Lee, J; Licandro, J; Lim, H; López, F; Maccarone, MC; Mannheim, K; Maravilla, D; Marcelli, L; Marini, A; Martinez, O; Masciantonio, G; Mase, K; Matev, R; Medina-Tanco, G; Mernik, T; Miyamoto, H; Miyazaki, Y; Mizumoto, Y; Modestino, G; Monaco, A; Monnier-Ragaigne, D; de los Ríos, JAM; Moretto, C; Morozenko, VS; Mot, B; Murakami, T; Nagano, M; Nagata, M; Nagataki, S; Nakamura, T; Napolitano, T; Naumov, D; Nava, R; Neronov, A; Nomoto, K; Nonaka, T; Ogawa, T; Ogio, S; Ohmori, H; Olinto, AV; Orleanski, P; Osteria, G; Panasyuk, MI; Parizot, E; Park, IH; Park, HW; Pastircakja, B; Patzak, T; Paul, T; Pennypacker, C; Cano, SP; Peter, T; Picozza, P; Pierog, T; Piotrowski, LW; Piraino, S; Plebaniak, Z; Pollini, A; Prat, P; Prévôt, G; Prieto, H; Putis, M; Reardon, P; Reyes, M; Ricci, M; Rodríguez, I; Frías, MDR; Ronga, F; Roth, M; Rothkaehl, H; Roudil, G; Rusinov, I; Rybczynski, M; Sabau, MD; Cano, GS; Sagawa, H; Saito, A; Sakaki, N; Sakata, M; Salazar, H; Sánchez, S; Santangelo, A; Crúz, LS; Palomino, MS; Saprykin, O; Sarazin, F; Sato, H; Sato, M; Schanz, T; Schieler, H; Scotti, V; Segreto, A; Selmane, S; Semikoz, D; Serra, M; Sharakin, S; Shibata, T; Shimizu, HM; Shinozaki, K; Shirahama, T; Siemieniec-Ozieblo, G; López, HHS; Sledd, J; Slominska, K; Sobey, A; Sugiyama, T; Supanitsky, D; Suzuki, M; Szabelska, B; Szabelski, J; Tajima, F; Tajima, N; Tajima, T; Takahashi, Y; Takami, H; Takeda, M; Takizawa, Y; Tenzer, C; Tibolla, O; Tkachev, L; Tokuno, H; Tomida, T; Tone, N; Toscano, S; Trillaud, F; Tsenov, R; Tsunesada, Y; Tsuno, K; Tymieniecka, T; Uchihori, Y; Unger, M; Vaduvescu, O; Valdés-Galicia, JF; Vallania, P; Valore, L; Vankova, G; Vigorito, C; Villaseñor, L; von Ballmoos, P; Wada, S; Watanabe, J; Watanabe, S; Watts, J ; Weber, M; Weiler, TJ; Wibig, T; Wiencke, L; Wille, M; Wilms, J; Wlodarczyk, Z; Yamamoto, T; Yamamoto, Y; Yang, J; Yano, H; Yashin, IV; Yonetoku, D; Yoshida, K; Yoshida, S; Young, R; Zotov, MY; Marchi, AZ

EXPERIMENTAL ASTRONOMY Vol. 40 ( 1 ) page： 135 - 152 2015.11

Publisher：Experimental Astronomy

The JEM-EUSO (Extreme Universe Space Observatory on-board the Japanese Experiment Module) mission will conduct extensive air shower (EAS) observations on the International Space Station (ISS). Following the ISS orbit, JEM-EUSO will experience continuous changes in the atmospheric conditions, including cloud presence. The influence of clouds on space-based observation is, therefore, an important topic to investigate from both EAS property and cloud climatology points of view. In the present work, the impact of clouds on the apparent profile of EAS is demonstrated through the simulation studies, taking into account the JEM-EUSO instrument and properties of the clouds. These results show a dependence on the cloud-top altitude and optical depth of the cloud. The analyses of satellite measurements on the cloud distribution indicate that more than 60 % of the cases allow for conventional EAS observation, and an additional ∼20 % with reduced quality. The combination of the relevant factors results in an effective trigger aperture of EAS observation ∼72 %, compared to the one in the clear atmosphere condition.

DOI： 10.1007/s10686-014-9377-2

The JEM-EUSO mission: An introduction Open Access

Adams, JH Jr; Ahmad, S; Albert, JN; Allard, D; Anchordoqui, L; Andreev, V; Anzalone, A; Arai, Y; Asano, K; Pernas, MA; Baragatti, P; Barrillon, P; Batsch, T; Bayer, J; Bechini, R; Belenguer, T; Bellotti, R; Belov, K; Berlind, AA; Bertaina, M; Biermann, PL; Biktemerova, S; Blaksley, C; Blanc, N; Blecki, J; Blin-Bondil, S; Blümer, J; Bobik, P; Bogomilov, M; Bonamente, M; Briggs, MS; Briz, S; Bruno, A; Cafagna, F; Campana, D; Capdevielle, JN; Caruso, R; Casolino, M; Cassardo, C; Castellini, G; Catalano, C; Catalano, O; Cellino, A; Chikawa, M; Christl, MJ; Cline, D; Connaughton, V; Conti, L; Cordero, G; Crawford, HJ; Cremonini, R; Csorna, S; Dagoret-Campagne, S; de Castro, AJ; de Donato, C; de la Taille, C; Santis, C; del Peral, L; Dell'Oro, A; De Simone, N; Di Martino, M; Distratis, G; Dulucq, F; Dupieux, M; Ebersoldt, A; Ebisuzaki, T; Engel, R; Falk, S; Fang, K; Fenu, F; Fernández-Gómez, I; Ferrarese, S; Finco, D; Flamini, M; Fornaro, C; Franceschi, A; Fujimoto, J; Fukushima, M; Galeotti, P; Garipov, G; Geary, J; Gelmini, G; Giraudo, G; Gonchar, M; Alvarado, CG; Gorodetzky, P; Guarino, F; Guzmán, A; Hachisu, Y; Harlov, B; Haungs, A; Carretero, JH; Higashide, K; Ikeda, D; Ikeda, H; Inoue, N; Inoue, S; Insolia, A; Isgrò, F; Itow, Y; Joven, E; Judd, EG; Jung, A; Kajino, F; Kajino, T; Kaneko, I; Karadzhov, Y; Karczmarczyk, J; Karus, M; Katahira, K; Kawai, K; Kawasaki, Y; Keilhauer, B; Khrenov, BA; Kim, JS; Kim, SW; Kim, SW; Kleifges, M; Klimov, PA; Kolev, D; Kreykenbohm, I; Kudela, K; Kurihara, Y; Kusenko, A; Kuznetsov, E; Lacombe, M; Lachaud, C; Lee, J; Licandro, J; Lim, H; López, F; Maccarone, MC; Mannheim, K; Maravilla, D; Marcelli, L; Marini, A; Martinez, O; Masciantonio, G; Mase, K; Matev, R; Medina-Tanco, G; Mernik, T; Miyamoto, H; Miyazaki, Y; Mizumoto, Y; Modestino, G; Monaco, A; Monnier-Ragaigne, D; Ríos, JAMD; Moretto, C; Morozenko, VS; Mot, B; Murakami, T; Nagano, M; Nagata, M; Nagataki, S; Nakamura, T; Napolitano, T; Naumov, D; Nava, R; Neronov, A; Nomoto, K; Nonaka, T; Ogawa, T; Ogio, S; Ohmori, H; Olinto, AV; Orleanski, P; Osteria, G; Panasyuk, MI; Parizot, E; Park, IH; Park, HW; Pastircak, B; Patzak, T; Paul, T; Pennypacker, C; Cano, SP; Peter, T; Picozza, P; Pierog, T; Piotrowski, LW; Piraino, S; Plebaniak, Z; Pollini, A; Prat, P; Prévôt, G; Prieto, H; Putis, M; Reardon, P; Reyes, M; Ricci, M; Rodríguez, I; Frías, MDR; Ronga, F; Roth, M; Rothkaehl, H; Roudil, G; Rusinov, I; Rybczynski, M; Sabau, MD; Cano, GS; Sagawa, H; Saito, A; Sakaki, N; Sakata, M; Salazar, H; Sánchez, S; Santangelo, A; Crúz, LS; Palomino, MS; Saprykin, O; Sarazin, F; Sato, H; Sato, M; Schanz, T; Schieler, H; Scotti, V; Segreto, A; Selmane, S; Semikoz, D; Serra, M; Sharakin, S; Shibata, T; Shimizu, HM; Shinozaki, K; Shirahama, T; Siemieniec-Ozieblo, G; López, HHS; Sledd, J; Slominska, K; Sobey, A; Sugiyama, T; Supanitsky, D; Suzuki, M; Szabelska, B; Szabelski, J; Tajima, F; Tajima, N; Tajima, T; Takahashi, Y; Takami, H; Takeda, M; Takizawa, Y; Tenzer, C; Tibolla, O; Tkachev, L; Tokuno, H; Tomida, T; Tone, N; Toscano, S; Trillaud, F; Tsenov, R; Tsunesada, Y; Tsuno, K; Tymieniecka, T; Uchihori, Y; Unger, M; Vaduvescu, O; Valdés-Galicia, JF; Vallania, P; Valore, L; Vankova, G; Vigorito, C; Villaseñor, L; von Ballmoos, P; Wada, S; Watanabe, J; Watanabe, S; Watts, J ; Weber, M; Weiler, TJ; Wibig, T; Wiencke, L; Wille, M; Wilms, J; Wlodarczyk, Z; Yamamoto, T; Yamamoto, Y; Yang, J; Yano, H; Yashin, IV; Yonetoku, D; Yoshida, K; Yoshida, S; Young, R; Zotov, MY; Marchi, AZ

EXPERIMENTAL ASTRONOMY Vol. 40 ( 1 ) page： 3 - 17 2015.11

Publisher：Experimental Astronomy

The Extreme Universe Space Observatory on board the Japanese Experiment Module of the International Space Station, JEM-EUSO, is being designed to search from space ultra-high energy cosmic rays. These are charged particles with energies from a few 1019 eV to beyond 1020 eV, at the very end of the known cosmic ray energy spectrum. JEM-EUSO will also search for extreme energy neutrinos, photons, and exotic particles, providing a unique opportunity to explore largely unknown phenomena in our Universe. The mission, principally based on a wide field of view (60 degrees) near-UV telescope with a diameter of ∼ 2.5 m, will monitor the earth’s atmosphere at night, pioneering the observation from space of the ultraviolet tracks (290-430 nm) associated with giant extensive air showers produced by ultra-high energy primaries propagating in the earth’s atmosphere. Observing from an orbital altitude of ∼ 400 km, the mission is expected to reach an instantaneous geometrical aperture of Ageo ≥ 2 × 105 km2 sr with an estimated duty cycle of ∼ 20 %. Such a geometrical aperture allows unprecedented exposures, significantly larger than can be obtained with ground-based experiments. In this paper we briefly review the history of space-based search for ultra-high energy cosmic rays. We then introduce the special issue of Experimental Astronomy devoted to the various aspects of such a challenging enterprise. We also summarise the activities of the on-going JEM-EUSO program.

DOI： 10.1007/s10686-015-9482-x

The JEM-EUSO instrument Open Access

Casolino, M; Kajino, F; Piotrowski, LW; Adams, JH ; Ahmad, S; Albert, JN; Allard, D; Anchordoqui, L; Andreev, V; Anzalone, A; Arai, Y; Asano, K; Pernas, MA; Barrillon, P; Batsch, T; Bayer, J; Bechini, R; Belenguer, T; Bellotti, R; Belov, K; Berlind, AA; Bertaina, M; Biermann, PL; Biktemerova, S; Blaksley, C; Blanc, N; Blecki, J; Blin-Bondil, S; Blümer, J; Bobik, P; Bogomilov, M; Bonamente, M; Briggs, MS; Briz, S; Bruno, A; Cafagna, F; Campana, D; Capdevielle, JN; Caruso, R; Casolino, M; Cassardo, C; Castellini, G; Catalano, C; Catalano, O; Cellino, A; Chikawa, M; Christl, MJ; Cline, D; Connaughton, V; Conti, L; Cordero, G; Crawford, HJ; Cremonini, R; Csorna, S; Dagoret-Campagne, S; de Castro, AJ; De Donato, C; de la Taille, C; De Santis, C; del Peral, L; Dell'Oro, A; De Simone, N; Di Martino, M; Distratis, G; Dulucq, F; Dupieux, M; Ebersoldt, A; Ebisuzaki, T; Engel, R; Falk, S; Fang, K; Fenu, F; Fernández-Gómez, I; Ferrarese, S; Finco, D; Flamini, M; Fornaro, C; Franceschi, A; Fujimoto, J; Fukushima, M; Galeotti, P; Garipov, G; Geary, J; Gelmini, G; Giraudo, G; Gonchari, M; Alvarado, CG; Gorodetzky, P; Guarino, F; Guzmán, A; Hachisu, Y; Harlov, B; Haungs, A; Carretero, JH; Ikeda, D; Ikeda, H; Inoue, N; Inoue, S; Insolia, A; Isgrò, F; Itowen, Y; Joven, E; Judd, EG; Jung, A; Kajino, F; Kajino, T; Kaneko, I; Karadzhov, Y; Karczmarczyk, J; Karus, M; Katahira, K; Kawai, K; Kawasaki, Y; Keilhauer, B; Khrenov, BA; Kim, JS; Kim, SW; Kim, SW; Kleifges, M; Klimov, PA; Kolev, D; Kreykenbohm, I; Kudela, K; Kurihara, Y; Kusenko, A; Kuznetsov, E; Lacombe, M; Lachaud, C; Lee, J; Licandro, J; Lim, H; López, F; Maccarone, MC; Mannheim, K; Maravilla, D; Marcelli, L; Marini, A; Martinez, O; Masciantonio, G; Mase, K; Matev, R; Medina-Tanco, G; Mernik, T; Miyamoto, H; Miyazaki, Y; Mizumoto, Y; Modestino, G; Monaco, A; Monnier-Ragaigne, D; de los Ríos, JAM; Moretto, C; Morozenko, VS; Mot, B; Murakami, T; Nagano, M; Nagata, M; Nagataki, S; Nakamura, T; Napolitano, T; Naumov, D; Nava, R; Neronov, A; Nomoto, K; Nonaka, T; Ogawa, T; Ogio, S; Ohmori, H; Olinto, AV; Orleanski, P; Osteria, G; Panasyuk, MI; Parizot, E; Park, IH; Park, HW; Pastircak, B; Patzak, T; Paul, T; Pennypacker, C; Cano, SP; Peter, T; Picozza, P; Pierog, T; Piotrowski, LW; Piraino, S; Plebaniak, Z; Pollini, A; Prat, P; Prévôt, G; Prieto, H; Putis, M; Reardon, P; Reyes, M; Ricci, M; Rodríguez, I; Frías, MDR; Ronga, F; Roth, M; Rothkaehl, H; Roudil, G; Rusinov, I; Rybczynski, M; Sabau, MD; Cano, GS; Sagawa, H; Saito, A; Sakaki, N; Sakata, M; Salazar, H; Sánchez, S; Santangelo, A; Crúz, LS; Palomino, MS; Saprykin, O; Sarazin, F; Sato, H; Sato, M; Schanz, T; Schieler, H; Scotti, V; Segreto, A; Selmane, S; Semikoz, D; Serra, M; Sharakin, S; Shibata, T; Shimizu, HM; Shinozaki, K; Shirahama, T; Siemieniec-Ozieblo, G; López, HHS; Sledd, J; Slominska, K; Sobey, A; Sugiyama, T; Supanitsky, D; Suzuki, M; Szabelska, B; Szabelski, J; Tajima, F; Tajima, N; Tajima, T; Takahashi, Y; Takami, H; Takeda, M; Takizawa, Y; Tenzer, C; Tibolla, O; Tkachev, L; Tokuno, H; Tomida, T; Tone, N; Toscano, S; Trillaud, F; Tsenov, R; Tsunesada, Y; Tsuno, K; Tymieniecka, T; Uchihori, Y; Unger, M; Vaduvescu, O; Valdés-Galicia, JF; Vallania, P; Valore, L; Vankova, G; Vigorito, C; Villaseñor, L; von Ballmoos, P; Wada, S; Watanabe, J; Watanabe, S; Watts, J ; Weber, M; Weiler, TJ; Wibig, T; Wiencke, L; Wille, M; Wilms, J; Odarczyk, ZW; Yamamoto, T; Yamamoto, Y; Yang, J; Yano, H; Yashin, IV; Yonetoku, D; Yoshida, K; Yoshida, S; Young, R; Zotov, MY; Marchi, AZ

EXPERIMENTAL ASTRONOMY Vol. 40 ( 1 ) page： 19 - 44 2015.11

Publisher：Experimental Astronomy

In this paper we describe the main characteristics of the JEM-EUSO instrument. The Extreme Universe Space Observatory on the Japanese Experiment Module (JEM-EUSO) of the International Space Station (ISS) will observe Ultra High-Energy Cosmic Rays (UHECR) from space. It will detect UV-light of Extensive Air Showers (EAS) produced by UHECRs traversing the Earth’s atmosphere. For each event, the detector will determine the energy, arrival direction and the type of the primary particle. The advantage of a space-borne detector resides in the large field of view, using a target volume of about 1012 tons of atmosphere, far greater than what is achievable from ground. Another advantage is a nearly uniform sampling of the whole celestial sphere. The corresponding increase in statistics will help to clarify the origin and sources of UHECRs and characterize the environment traversed during their production and propagation. JEM-EUSO is a 1.1 ton refractor telescope using an optics of 2.5 m diameter Fresnel lenses to focus the UV-light from EAS on a focal surface composed of about 5,000 multi-anode photomultipliers, for a total of ≃3⋅105 channels. A multi-layer parallel architecture handles front-end acquisition, selecting and storing valid triggers. Each processing level filters the events with increasingly complex algorithms using FPGAs and DSPs to reject spurious events and reduce the data rate to a value compatible with downlink constraints.

DOI： 10.1007/s10686-014-9418-x

The infrared camera onboard JEM-EUSO

Adams, JH Jr; Ahmad, S; Albert, JN; Allard, D; Anchordoqui, L; Andreev, V; Anzalone, A; Arai, Y; Asano, K; Pernas, MA; Baragatti, P; Barrillon, P; Batsch, T; Bayer, J; Bechini, R; Belenguer, T; Bellotti, R; Belov, K; Berlind, AA; Bertaina, M; Biermann, PL; Biktemerova, S; Blaksley, C; Blanc, N; Blecki, J; Blin-Bondil, S; Blümer, J; Bobik, P; Bogomilov, M; Bonamente, M; Briggs, MS; Briz, S; Bruno, A; Cafagna, F; Campana, D; Capdevielle, JN; Caruso, R; Casolino, M; Cassardo, C; Castellini, G; Catalano, C; Catalano, O; Cellino, A; Chikawa, M; Christl, MJ; Cline, D; Connaughton, V; Conti, L; Cordero, G; Crawford, HJ; Cremonini, R; Csorna, S; Dagoret-Campagne, S; de Castro, AJ; De Donato, C; de la Taille, C; De Santis, C; del Peral, L; Dell'Oro, A; De Simone, N; Di Martino, M; Distratis, G; Dulucq, F; Dupieux, M; Ebersoldt, A; Ebisuzaki, T; Engel, R; Falk, S; Fang, K; Fenu, F; Fernández-Gómez, I; Ferrarese, S; Finco, D; Flamini, M; Fornaro, C; Franceschi, A; Fujimoto, J; Fukushima, M; Galeotti, P; Garipov, G; Geary, J; Gelmini, G; Giraudo, G; Gonchar, M; Alvarado, CG; Gorodetzky, P; Guarino, F; Guzmán, A; Hachisu, Y; Harlov, B; Haungs, A; Carretero, JH; Higashide, K; Ikeda, D; Ikeda, H; Inoue, N; Inoue, S; Insolia, A; Isgrò, F; Itow, Y; Joven, E; Judd, EG; Jung, A; Kajino, F; Kajino, T; Kaneko, I; Karadzhov, Y; Karczmarczyk, J; Karus, M; Katahira, K; Kawai, K; Kawasaki, Y; Keilhauer, B; Khrenov, BA; Kim, JS; Kim, SW; Kim, SW; Kleifges, M; Klimov, PA; Kolev, D; Kreykenbohm, I; Kudela, K; Kurihara, Y; Kusenko, A; Kuznetsov, E; Lacombe, M; Lachaud, C; Lee, J; Licandro, J; Lim, H; López, F; Maccarone, MC; Mannheim, K; Maravilla, D; Marcelli, L; Marini, A; Martinez, O; Masciantonio, G; Mase, K; Matev, R; Medina-Tanco, G; Mernik, T; Miyamoto, H; Miyazaki, Y; Mizumoto, Y; Modestino, G; Monaco, A; Monnier-Ragaigne, D; de los Ríos, JAM; Moretto, C; Morozenko, VS; Mot, B; Murakami, T; Nagano, M; Nagata, M; Nagataki, S; Nakamura, T; Napolitano, T; Naumov, D; Nava, R; Neronov, A; Nomoto, K; Nonaka, T; Ogawa, T; Ogio, S; Ohmori, H; Olinto, AV; Orleanski, P; Osteria, G; Panasyuk, MI; Parizot, E; Park, IH; Park, HW; Pastircak, B; Patzak, T; Paul, T; Pennypacker, C; Cano, SP; Peter, T; Picozza, P; Pierog, T; Piotrowski, LW; Piraino, S; Plebaniak, Z; Pollini, A; Prat, P; Prévôt, G; Prieto, H; Putis, M; Reardon, P; Reyes, M; Ricci, M; Rodríguez, I; Frías, MDR; Ronga, F; Roth, M; Rothkaehl, H; Roudil, G; Rusinov, I; Rybczynski, M; Sabau, MD; Cano, GS; Sagawa, H; Saito, A; Sakaki, N; Sakata, M; Salazar, H; Sánchez, S; Santangelo, A; Crúz, LS; Palomino, MS; Saprykin, O; Sarazin, F; Sato, H; Sato, M; Schanz, T; Schieler, H; Scotti, V; Segreto, A; Selmane, S; Semikoz, D; Serra, M; Sharakin, S; Shibata, T; Shimizu, HM; Shinozaki, K; Shirahama, T; Siemieniec-Ozieblo, G; López, HHS; Sledd, J; Slominska, K; Sobey, A; Sugiyama, T; Supanitsky, D; Suzuki, M; Szabelska, B; Szabelski, J; Tajima, F; Tajima, N; Tajima, T; Takahashi, Y; Takami, H; Takeda, M; Takizawa, Y; Tenzer, C; Tibolla, O; Tkachev, L; Tokuno, H; Tomida, T; Tone, N; Toscano, S; Trillaud, F; Tsenov, R; Tsunesada, Y; Tsuno, K; Tymieniecka, T; Uchihori, Y; Unger, M; Vaduvescu, O; Valdés-Galicia, JF; Vallania, P; Valore, L; Vankova, G; Vigorito, C; Villaseñor, L; von Ballmoos, P; Wada, S; Watanabe, J; Watanabe, S; Watts, J ; Weber, M; Weiler, TJ; Wibig, T; Wiencke, L; Wille, M; Wilms, J; Wlodarczyk, Z; Yamamoto, T; Yamamoto, Y; Yang, J; Yano, H; Yashini, IV; Yonetoku, D; Yoshida, K; Yoshida, S; Young, R; Zotovi, MY; Marchi, AZ

EXPERIMENTAL ASTRONOMY Vol. 40 ( 1 ) page： 61 - 89 2015.11

Publisher：Experimental Astronomy

The Extreme Universe Space Observatory on the Japanese Experiment Module (JEM-EUSO) on board the International Space Station (ISS) is the first space-based mission worldwide in the field of Ultra High-Energy Cosmic Rays (UHECR). For UHECR experiments, the atmosphere is not only the showering calorimeter for the primary cosmic rays, it is an essential part of the readout system, as well. Moreover, the atmosphere must be calibrated and has to be considered as input for the analysis of the fluorescence signals. Therefore, the JEM-EUSO Space Observatory is implementing an Atmospheric Monitoring System (AMS) that will include an IR-Camera and a LIDAR. The AMS Infrared Camera is an infrared, wide FoV, imaging system designed to provide the cloud coverage along the JEM-EUSO track and the cloud top height to properly achieve the UHECR reconstruction in cloudy conditions. In this paper, an updated preliminary design status, the results from the calibration tests of the first prototype, the simulation of the instrument, and preliminary cloud top height retrieval algorithms are presented.

DOI： 10.1007/s10686-014-9402-5

The EUSO-Balloon pathfinder

Adams, JH Jr; Ahmad, S; Albert, JN; Allard, D; Anchordoqui, L; Andreev, V; Anzalone, A; Arai, Y; Asano, K; Pernas, MA; Barrillon, P; Batsch, T; Bayer, J; Bechini, R; Belenguer, T; Bellotti, R; Belov, K; Berlind, AA; Bertaina, M; Biermann, PL; Biktemerova, S; Blaksley, C; Blanc, N; Blecki, J; Blin-Bondil, S; Blümer, J; Bobik, P; Bogomilov, M; Bonamente, M; Briggs, MS; Briz, S; Bruno, A; Cafagna, F; Campana, D; Capdevielle, JN; Caruso, R; Casolino, M; Cassardo, C; Castellini, G; Catalano, C; Catalano, O; Cellino, A; Chikawa, M; Christl, MJ; Cline, D; Connaughton, V; Conti, L; Cordero, G; Crawford, HJ; Cremonini, R; Csorna, S; Dagoret-Campagne, S; de Castro, AJ; De Donato, C; de la Taille, C; De Santis, C; del Peral, L; Dell'Oro, A; De Simone, N; Di Martino, M; Distratis, G; Dulucq, F; Dupieux, M; Ebersoldt, A; Ebisuzaki, T; Engel, R; Falk, S; Fang, K; Fenu, F; Fernández-Gómez, I; Ferrarese, S; Finco, D; Flamini, M; Fornaro, C; Franceschi, A; Fujimoto, J; Fukushima, M; Galeotti, P; Garipov, G; Geary, J; Gelmini, G; Giraudo, G; Gonchari, M; Alvarado, CG; Gorodetzky, P; Guarino, F; Guzmán, A; Hachisu, Y; Harlov, B; Haungs, A; Carretero, JH; Ikeda, D; Ikeda, H; Inoue, N; Inoue, S; Insolia, A; Isgrò, F; Itowen, Y; Joven, E; Judd, EG; Jung, A; Kajino, F; Kajino, T; Kaneko, I; Karadzhov, Y; Karczmarczyk, J; Karus, M; Katahira, K; Kawai, K; Kawasaki, Y; Keilhauer, B; Khrenov, BA; Kim, JS; Kim, SW; Kim, SW; Kleifges, M; Klimov, PA; Kolev, D; Kreykenbohm, I; Kudela, K; Kurihara, Y; Kusenko, A; Kuznetsov, E; Lacombe, M; Lachaud, C; Lee, J; Licandro, J; Lim, H; López, F; Maccarone, MC; Mannheim, K; Maravilla, D; Marcelli, L; Marini, A; Martinez, O; Masciantonio, G; Mase, K; Matev, R; Medina-Tanco, G; Mernik, T; Miyamoto, H; Miyazaki, Y; Mizumoto, Y; Modestino, G; Monaco, A; Monnier-Ragaigne, D; de los Ríos, JAM; Moretto, C; Morozenko, VS; Mot, B; Murakami, T; Nagano, M; Nagata, M; Nagataki, S; Nakamura, T; Napolitano, T; Naumov, D; Nava, R; Neronov, A; Nomoto, K; Nonaka, T; Ogawa, T; Ogio, S; Ohmori, H; Olinto, AV; Orleanski, P; Osteria, G; Panasyuk, MI; Parizot, E; Park, IH; Park, HW; Pastircak, B; Patzak, T; Paul, T; Pennypacker, C; Cano, SP; Peter, T; Picozza, P; Pierog, T; Piotrowski, LW; Piraino, S; Plebaniak, Z; Pollini, A; Prat, P; Prévôt, G; Prieto, H; Putis, M; Reardon, P; Reyes, M; Ricci, M; Rodríguez, I; Frías, MDR; Ronga, F; Roth, M; Rothkaehl, H; Roudil, G; Rusinov, I; Rybczynski, M; Sabau, MD; Cano, GS; Sagawa, H; Saito, A; Sakaki, N; Sakata, M; Salazar, H; Sánchez, S; Santangelo, A; Crúz, LS; Palomino, MS; Saprykin, O; Sarazin, F; Sato, H; Sato, M; Schanz, T; Schieler, H; Scotti, V; Segreto, A; Selmane, S; Semikoz, D; Serra, M; Sharakin, S; Shibata, T; Shimizu, HM; Shinozaki, K; Shirahama, T; Siemieniec-Ozieblo, G; López, HHS; Sledd, J; Slominska, K; Sobey, A; Sugiyama, T; Supanitsky, D; Suzuki, M; Szabelska, B; Szabelski, J; Tajima, F; Tajima, N; Tajima, T; Takahashi, Y; Takami, H; Takeda, M; Takizawa, Y; Tenzer, C; Tibolla, O; Tkachev, L; Tokuno, H; Tomida, T; Tone, N; Toscano, S; Trillaud, F; Tsenov, R; Tsunesada, Y; Tsuno, K; Tymieniecka, T; Uchihori, Y; Unger, M; Vaduvescu, O; Valdés-Galicia, JF; Vallania, P; Valore, L; Vankova, G; Vigorito, C; Villaseñor, L; von Ballmoos, P; Wada, S; Watanabe, J; Watanabe, S; Watts, J ; Weber, M; Weiler, TJ; Wibig, T; Wiencke, L; Wille, M; Wilms, J; Odarczyk, ZW; Yamamoto, T; Yamamoto, Y; Yang, J; Yano, H; Yashin, IV; Yonetoku, D; Yoshida, K; Yoshida, S; Young, R; Zotov, MY; Marchi, AZ

EXPERIMENTAL ASTRONOMY Vol. 40 ( 1 ) page： 281 - 299 2015.11

Publisher：Experimental Astronomy

EUSO-Balloon is a pathfinder for JEM-EUSO, the Extreme Universe Space Observatory which is to be hosted on-board the International Space Station. As JEM-EUSO is designed to observe Ultra-High Energy Cosmic Rays (UHECR)-induced Extensive Air Showers (EAS) by detecting their ultraviolet light tracks “from above”, EUSO-Balloon is a nadir-pointing UV telescope too. With its Fresnel Optics and Photo-Detector Module, the instrument monitors a 50 km2 ground surface area in a wavelength band of 290–430 nm, collecting series of images at a rate of 400,000 frames/sec. The objectives of the balloon demonstrator are threefold: a) perform a full end-to-end test of a JEM-EUSO prototype consisting of all the main subsystems of the space experiment, b) measure the effective terrestrial UV background, with a spatial and temporal resolution relevant for JEM-EUSO. c) detect tracks of ultraviolet light from near space for the first time. The latter is a milestone in the development of UHECR science, paving the way for any future space-based UHECR observatory. On August 25, 2014, EUSO-Balloon was launched from Timmins Stratospheric Balloon Base (Ontario, Canada) by the balloon division of the French Space Agency CNES. From a float altitude of 38 km, the instrument operated during the entire astronomical night, observing UV-light from a variety of ground-covers and from hundreds of simulated EASs, produced by flashers and a laser during a two-hour helicopter under-flight.

DOI： 10.1007/s10686-015-9467-9

The atmospheric monitoring system of the JEM-EUSO instrument Open Access

Adams, JH Jr; Ahmad, S; Albert, JN; Allard, D; Anchordoqui, L; Andreev, V; Anzalone, A; Arai, Y; Asano, K; Pernas, MA; Baragatti, P; Barrillon, P; Batsch, T; Bayer, J; Bechini, R; Belenguer, T; Bellotti, R; Belov, K; Berlind, AA; Bertaina, M; Biermann, PL; Biktemerova, S; Blaksley, C; Blanc, N; Blecki, J; Blin-Bondil, S; Blümer, J; Bobik, P; Bogomilov, M; Bonamente, M; Briggs, MS; Briz, S; Bruno, A; Cafagna, F; Campana, D; Capdevielle, JN; Caruso, R; Casolino, M; Cassardo, C; Castellini, G; Catalano, C; Catalano, O; Cellino, A; Chikawa, M; Christl, MJ; Cline, D; Connaughton, V; Conti, L; Cordero, G; Crawford, HJ; Cremonini, R; Csorna, S; Dagoret-Campagne, S; de Castro, AJ; De Donato, C; de la Taille, C; De Santis, C; del Peral, L; Dell'Oro, A; De Simone, N; Di Martino, M; Distratis, G; Dulucq, F; Dupieux, M; Ebersoldt, A; Ebisuzaki, T; Engel, R; Falk, S; Fang, K; Fenu, F; Fernández-Gómez, I; Ferrarese, S; Finco, D; Flamini, M; Fornaro, C; Franceschi, A; Fujimoto, J; Fukushima, M; Galeotti, P; Garipov, G; Geary, J; Gelmini, G; Giraudo, G; Gonchar, M; Alvarado, CG; Gorodetzky, P; Guarino, F; Guzmán, A; Hachisu, Y; Harlov, B; Haungs, A; Carretero, JH; Higashide, K; Ikeda, D; Ikeda, H; Inoue, N; Inoue, S; Insolia, A; Isgrò, F; Itow, Y; Joven, E; Judd, EG; Jung, A; Kajino, F; Kajino, T; Kaneko, I; Karadzhov, Y; Karczmarczyk, J; Karus, M; Katahira, K; Kawai, K; Kawasaki, Y; Keilhauer, B; Khrenov, BA; Kim, JS; Kim, SW; Kim, SW; Kleifges, M; Klimov, PA; Kolev, D; Kreykenbohm, I; Kudela, K; Kurihara, Y; Kusenko, A; Kuznetsov, E; Lacombe, M; Lachaud, C; Lee, J; Licandro, J; Lim, H; López, F; Maccarone, MC; Mannheim, K; Maravilla, D; Marcelli, L; Marini, A; Martinez, O; Masciantonio, G; Mase, K; Matev, R; Medina-Tanco, G; Mernik, T; Miyamoto, H; Miyazaki, Y; Mizumoto, Y; Modestino, G; Monaco, A; Monnier-Ragaigne, D; de los Ríos, JAM; Moretto, C; Morozenko, VS; Mot, B; Murakami, T; Nagano, M; Nagata, M; Nagataki, S; Nakamura, T; Napolitano, T; Naumov, D; Nava, R; Neronov, A; Nomoto, K; Nonaka, T; Ogawa, T; Ogio, S; Ohmori, H; Olinto, AV; Orleanski, P; Osteria, G; Panasyuk, MI; Parizot, E; Park, IH; Park, HW; Pastircak, B; Patzak, T; Paul, T; Pennypacker, C; Cano, SP; Peter, T; Picozza, P; Pierog, T; Piotrowski, LW; Piraino, S; Plebaniak, Z; Pollini, A; Prat, P; Prevot, G; Prieto, H; Putis, M; Reardon, P; Reyes, M; Ricci, M; Rodríguez, I; Frías, MDR; Ronga, F; Roth, M; Rothkaehl, H; Roudil, G; Rusinov, I; Rybczynski, M; Sabau, MD; Cano, GS; Sagawa, H; Saito, A; Sakaki, N; Sakata, M; Salazar, H; Sánchez, S; Santangelo, A; Crúz, LS; Palomino, MS; Saprykin, O; Sarazin, F; Sato, H; Sato, M; Schanz, T; Schieler, H; Scotti, V; Segreto, A; Selmane, S; Semikoz, D; Serra, M; Sharakin, S; Shibata, T; Shimizu, HM; Shinozaki, K; Shirahama, T; Siemieniec-Ozieblo, G; López, HHS; Sledd, J; Slominska, K; Sobey, A; Sugiyama, T; Supanitsky, D; Suzuki, M; Szabelska, B; Szabelski, J; Tajima, F; Tajima, N; Tajima, T; Takahashi, Y; Takami, H; Takeda, M; Takizawa, Y; Tenzer, C; Tibolla, O; Tkachev, L; Tokuno, H; Tomida, T; Tone, N; Toscano, S; Trillaud, F; Tsenov, R; Tsunesada, Y; Tsuno, K; Tymieniecka, T; Uchihori, Y; Unger, M; Vaduvescu, O; Valdés-Galicia, JF; Vallania, P; Valore, L; Vankova, G; Vigorito, C; Villaseñor, L; von Ballmoos, P; Wada, S; Watanabe, J; Watanabe, S; Watts, J ; Weber, M; Weiler, J; Wibig, T; Wiencke, L; Wille, M; Wilms, J; Wlodarczyk, Z; Yamamoto, T; Yamamoto, Y; Yang, J; Yano, H; Yashin, IV; Yonetoku, D; Yoshida, K; Yoshida, S; Young, R; Zotov, MY; Marchi, AZ

EXPERIMENTAL ASTRONOMY Vol. 40 ( 1 ) page： 45 - 60 2015.11

Publisher：Experimental Astronomy

The JEM-EUSO telescope will detect Ultra-High Energy Cosmic Rays (UHECRs) from space, detecting the UV Fluorescence Light produced by Extensive Air Showers (EAS) induced by the interaction of the cosmic rays with the earth’s atmosphere. The capability to reconstruct the properties of the primary cosmic ray depends on the accurate measurement of the atmospheric conditions in the region of EAS development. The Atmospheric Monitoring (AM) system of JEM-EUSO will host a LIDAR, operating in the UV band, and an Infrared camera to monitor the cloud cover in the JEM-EUSO Field of View, in order to be sensitive to clouds with an optical depth τ ≥ 0.15 and to measure the cloud top altitude with an accuracy of 500 m and an altitude resolution of 500 m.

DOI： 10.1007/s10686-014-9378-1

Space experiment TUS on board the Lomonosov satellite as pathfinder of JEM-EUSO

Adams, JH Jr; Ahmad, S; Albert, JN; Allard, D; Anchordoqui, L; Andreev, V; Anzalone, A; Arai, Y; Asano, K; Pernas, MA; Baragatti, P; Barrillon, P; Batsch, T; Bayer, J; Bechini, R; Belenguer, T; Bellotti, R; Belov, K; Berlind, AA; Bertaina, M; Biermann, PL; Biktemerova, S; Blaksley, C; Blanc, N; Blecki, J; Blin-Bondil, S; Blümer, J; Bobik, P; Bogomilov, M; Bonamente, M; Briggs, MS; Briz, S; Bruno, A; Cafagna, F; Campana, D; Capdevielle, JN; Caruso, R; Casolino, M; Cassardo, C; Castellini, G; Catalano, C; Catalano, O; Cellino, A; Chikawa, M; Christl, MJ; Cline, D; Connaughton, V; Conti, L; Cordero, G; Crawford, HJ; Cremonini, R; Csorna, S; Dagoret-Campagne, S; de Castro, AJ; De Donato, C; de la Taille, C; De Santis, C; del Peral, L; Dell'Oro, A; De Simone, N; Di Martino, M; Distratis, G; Dulucq, F; Dupieux, M; Ebersoldt, A; Ebisuzaki, T; Engel, R; Falk, S; Fang, K; Fenu, F; Fernández-Gómez, I; Ferrarese, S; Finco, D; Flamini, M; Fornaro, C; Franceschi, A; Fujimoto, J; Fukushima, M; Galeotti, P; Garipov, G; Geary, J; Gelmini, G; Giraudo, G; Gonchar, M; Alvarado, CG; Gorodetzky, P; Guarino, F; Guzmán, A; Hachisu, Y; Harlov, B; Haungs, A; Carretero, JH; Higashide, K; Ikeda, D; Ikeda, H; Inoue, N; Inoue, S; Insolia, A; Isgrò, F; Itow, Y; Joven, E; Judd, EG; Jung, A; Kajino, F; Kajino, T; Kaneko, I; Karadzhov, Y; Karczmarczyk, J; Karus, M; Katahira, K; Kawai, K; Kawasaki, Y; Keilhauer, B; Khrenov, BA; Kim, JS; Kim, SW; Kim, SW; Kleifges, M; Klimov, PA; Kolev, D; Kreykenbohm, I; Kudela, K; Kurihara, Y; Kusenko, A; Kuznetsov, E; Lacombe, M; Lachaud, C; Lee, J; Licandro, J; Lim, H; López, F; Maccarone, MC; Mannheim, K; Maravilla, D; Marcelli, L; Marini, A; Martinez, O; Masciantonio, G; Mase, K; Matev, R; Medina-Tanco, G; Mernik, T; Miyamoto, H; Miyazaki, Y; Mizumoto, Y; Modestino, G; Monaco, A; Monnier-Ragaigne, D; de los Ríos, JAM; Moretto, C; Morozenko, VS; Mot, B; Murakami, T; Nagano, M; Nagata, M; Nagataki, S; Nakamura, T; Napolitano, T; Naumov, D; Nava, R; Neronov, A; Nomoto, K; Nonaka, T; Ogawa, T; Ogio, S; Ohmori, H; Olinto, AV; Orleanski, P; Osteria, G; Panasyuk, MI; Parizot, E; Park, IH; Park, HW; Pastircak, B; Patzak, T; Paul, T; Pennypacker, C; Cano, SP; Peter, T; Picozza, P; Pierog, T; Piotrowski, LW; Piraino, S; Plebaniak, Z; Pollini, A; Prat, P; Prévôt, G; Prieto, H; Putis, M; Reardon, P; Reyes, M; Ricci, M; Rodríguez, I; Frías, MDR; Ronga, F; Roth, M; Rothkaehl, H; Roudil, G; Rusinov, I; Rybczynski, M; Sabau, MD; Cano, GS; Sagawa, H; Saito, A; Sakaki, N; Sakata, M; Salazar, H; Sánchez, S; Santangelo, A; Crúz, LS; Palomino, MS; Saprykin, O; Sarazin, F; Sato, H; Sato, M; Schanz, T; Schieler, H; Scotti, V; Segreto, A; Selmane, S; Semikoz, D; Serra, M; Sharakin, S; Shibata, T; Shimizu, HM; Shinozaki, K; Shirahama, T; Siemieniec-Ozieblo, G; López, HHS; Sledd, J; Slominska, K; Sobey, A; Sugiyama, T; Supanitsky, D; Suzuki, M; Szabelska, B; Szabelski, J; Tajima, F; Tajima, N; Tajima, T; Takahashi, Y; Takami, H; Takeda, M; Takizawa, Y; Tenzer, C; Tibolla, O; Tkachev, L; Tokuno, H; Tomida, T; Tone, N; Toscano, S; Trillaud, F; Tsenov, R; Tsunesada, Y; Tsuno, K; Tymieniecka, T; Uchihori, Y; Unger, M; Vaduvescu, O; Valdés-Galicia, JF; Vallania, P; Valore, L; Vankova, G; Vigorito, C; Villaseñor, L; von Ballmoos, P; Wada, S; Watanabe, J; Watanabe, S; Watts, J ; Weber, M; Weiler, TJ; Wibig, T; Wiencke, L; Wille, M; Wilms, J; Wlodarczyk, Z; Yamamoto, T; Yamamoto, Y; Yang, J; Yano, H; Yashin, IV; Yonetoku, D; Yoshida, K; Yoshida, S; Young, R; Zotov, MY; Marchi, AZ

EXPERIMENTAL ASTRONOMY Vol. 40 ( 1 ) page： 315 - 326 2015.11

Publisher：Experimental Astronomy

Space-based detectors for the study of extreme energy cosmic rays (EECR) are being prepared as a promising new method for detecting highest energy cosmic rays. A pioneering space device – the “tracking ultraviolet set-up” (TUS) – is in the last stage of its construction and testing. The TUS detector will collect preliminary data on EECR in the conditions of a space environment, which will be extremely useful for planning the major JEM-EUSO detector operation.

DOI： 10.1007/s10686-015-9465-y

Science of atmospheric phenomena with JEM-EUSO Open Access

Adams, JH Jr; Ahmad, S; Albert, JN; Allard, D; Anchordoqui, L; Andreev, V; Anzalone, A; Arai, Y; Asano, K; Pernas, MA; Baragatti, P; Barrillon, P; Batsch, T; Bayer, J; Bechini, R; Belenguer, T; Bellotti, R; Belov, K; Berlind, AA; Bertaina, M; Biermann, PL; Biktemerova, S; Blaksley, C; Blanc, N; Blecki, J; Blin-Bondil, S; Blümer, J; Bobik, P; Bogomilov, M; Bonamente, M; Briggs, MS; Briz, S; Bruno, A; Cafagna, F; Campana, D; Capdevielle, JN; Caruso, R; Casolino, M; Cassardo, C; Castellini, G; Catalano, C; Catalano, O; Cellino, A; Chikawa, M; Christl, MJ; Cline, D; Connaughton, V; Conti, L; Cordero, G; Crawford, HJ; Cremonini, R; Csorna, S; Dagoret-Campagne, S; de Castro, AJ; De Donato, C; de la Taille, C; De Santis, C; del Peral, L; Dell'Oro, A; De Simone, N; Di Martino, M; Distratis, G; Dulucq, F; Dupieux, M; Ebersoldt, A; Ebisuzaki, T; Engel, R; Falk, S; Fang, K; Fenu, F; Fernández-Gómez, I; Ferrarese, S; Finco, D; Flamini, M; Fornaro, C; Franceschi, A; Fujimoto, J; Fukushima, M; Galeotti, P; Garipov, G; Geary, J; Gelmini, G; Giraudo, G; Gonchar, M; Alvarado, CG; Gorodetzky, P; Guarino, F; Guzmán, A; Hachisu, Y; Harlov, B; Haungs, A; Carretero, JH; Higashide, K; Ikeda, D; Ikeda, H; Inoue, N; Inoue, S; Insolia, A; Isgrò, F; Itow, Y; Joven, E; Judd, EG; Jung, A; Kajino, F; Kajino, T; Kaneko, I; Karadzhov, Y; Karczmarczyk, J; Karus, M; Katahira, K; Kawai, K; Kawasaki, Y; Keilhauer, B; Khrenov, BA; Kim, JS; Kim, SW; Kim, SW; Kleifges, M; Klimov, PA; Kolev, D; Kreykenbohm, I; Kudela, K; Kurihara, Y; Kusenko, A; Kuznetsov, E; Lacombe, M; Lachaud, C; Lee, J; Licandro, J; Lim, H; López, F; Maccarone, MC; Mannheim, K; Maravilla, D; Marcelli, L; Marini, A; Martinez, O; Masciantonio, G; Mase, K; Matev, R; Medina-Tanco, G; Mernik, T; Miyamoto, H; Miyazaki, Y; Mizumoto, Y; Modestino, G; Monaco, A; Monnier-Ragaigne, D; de los Ríos, JAM; Moretto, C; Morozenko, VS; Mot, B; Murakami, T; Nagano, M; Nagata, M; Nagataki, S; Nakamura, T; Napolitano, T; Naumov, D; Nava, R; Neronov, A; Nomoto, K; Nonaka, T; Ogawa, T; Ogio, S; Ohmori, H; Olinto, AV; Orleanski, P; Osteria, G; Panasyuk, MI; Parizot, E; Park, IH; Park, HW; Pastircak, B; Patzak, T; Paul, T; Pennypacker, C; Cano, SP; Peter, T; Picozza, P; Pierog, T; Piotrowski, LW; Piraino, S; Plebaniak, Z; Pollini, A; Prat, P; Prévôt, G; Prieto, H; Putis, M; Reardon, P; Reyes, M; Ricci, M; Rodríguez, I; Frías, MDR; Ronga, F; Roth, M; Rothkaehl, H; Roudil, G; Rusinov, I; Rybczynski, M; Sabau, MD; Cano, GS; Sagawa, H; Saito, A; Sakaki, N; Sakata, M; Salazar, H; Sanchez, S; Santangelo, A; Cruz, LS; Palomino, MS; Saprykin, O; Sarazin, F; Sato, H; Sato, M; Schanz, T; Schieler, H; Scotti, V; Segreto, A; Selmane, S; Semikoz, D; Serra, M; Sharakin, S; Shibata, T; Shimizu, HM; Shinozaki, K; Shirahama, T; Siemieniec-Ozieblo, G; López, HHS; Sledd, J; Slominska, K; Sobey, A; Sugiyama, T; Supanitsky, D; Suzuki, M; Szabelska, B; Szabelski, J; Tajima, F; Tajima, N; Tajima, T; Takahashi, Y; Takami, H; Takeda, M; Takizawa, Y; Tenzer, C; Tibolla, O; Tkachev, L; Tokuno, H; Tomida, T; Tone, N; Toscano, S; Trillaud, F; Tsenov, R; Tsunesada, Y; Tsuno, K; Tymieniecka, T; Uchihori, Y; Unger, M; Vaduvescu, O; Valdés-Galiciaga, JF; Vallania, P; Valore, L; Vankova, G; Vigorito, C; Villaseñor, L; von Ballmoos, P; Wada, S; Watanabe, J; Watanabe, S; Watts, J ; Weber, M; Weiler, TJ; Wibig, T; Wiencke, L; Wille, M; Wilms, J; Wlodarczyk, Z; Yamamoto, T; Yamamoto, Y; Yang, J; Yano, H; Yashin, IV; Yonetoku, D; Yoshida, K; Yoshida, S; Young, R; Zotov, MY; Marchi, AZ

EXPERIMENTAL ASTRONOMY Vol. 40 ( 1 ) page： 239 - 251 2015.11

Publisher：Experimental Astronomy

The main goal of the JEM-EUSO experiment is the study of Ultra High Energy Cosmic Rays (UHECR, 1019−1021eV), but the method which will be used (detection of the secondary light emissions induced by cosmic rays in the atmosphere) allows to study other luminous phenomena. The UHECRs will be detected through the measurement of the emission in the range between 290 and 430 m, where some part of Transient Luminous Events (TLEs) emission also appears. This work discusses the possibility of using the JEM-EUSO Telescope to get new scientific results on TLEs. The high time resolution of this instrument allows to observe the evolution of TLEs with great precision just at the moment of their origin. The paper consists of four parts: review of the present knowledge on the TLE, presentation of the results of the simulations of the TLE images in the JEM-EUSO telescope, results of the Russian experiment Tatiana–2 and discussion of the possible progress achievable in this field with JEM-EUSO as well as possible cooperation with other space projects devoted to the study of TLE – TARANIS and ASIM. In atmospheric physics, the study of TLEs became one of the main physical subjects of interest after their discovery in 1989. In the years 1992 – 1994 detection was performed from satellite, aircraft and space shuttle and recently from the International Space Station. These events have short duration (milliseconds) and small scales (km to tens of km) and appear at altitudes 50 – 100 km. Their nature is still not clear and each new experimental data can be useful for a better understanding of these mysterious phenomena.

DOI： 10.1007/s10686-014-9431-0

Ground-based tests of JEM-EUSO components at the Telescope Array site, "EUSO-TA" Open Access

Kawasaki, Y; Piotrowski, LW; Adams, JH ; Ahmad, S; Albert, JN; Allard, D; Anchordoqui, L; Andreev, V; Anzalone, A; Arai, Y; Asano, K; Pernas, MA; Baragatti, P; Barrillon, P; Batsch, T; Bayer, J; Bechini, R; Belenguer, T; Bellotti, R; Belov, K; Berlind, AA; Bertaina, M; Biermann, PL; Biktemerova, S; Blaksley, C; Blanc, N; Blecki, J; Blin-Bondil, S; Blümer, J; Bobik, P; Bogomilov, M; Bonamente, M; Briggs, MS; Briz, S; Bruno, A; Cafagna, F; Campana, D; Capdevielle, JN; Caruso, R; Casolino, M; Cassardo, C; Castellini, G; Catalano, C; Catalano, O; Cellino, A; Chikawa, M; Christl, MJ; Cline, D; Connaughton, V; Conti, L; Cordero, G; Crawford, HJ; Cremonini, R; Csorna, S; Dagoret-Campagne, S; de Castro, AJ; de Donato, C; de la Taille, C; Santis, C; del Peral, L; Dell'Oro, A; De Simone, N; Di Martino, M; Distratis, G; Dulucq, F; Dupieux, M; Ebersoldt, A; Ebisuzaki, T; Engel, R; Falk, S; Fang, K; Fenu, F; Fernández-Gómez, I; Ferrarese, S; Finco, D; Flamini, M; Fornaro, C; Franceschi, A; Fujimoto, J; Fukushima, M; Galeotti, P; Garipov, G; Geary, J; Gelmini, G; Giraudo, G; Gonchar, M; Alvarado, CG; Gorodetzky, P; Guarino, F; Guzmán, A; Hachisu, Y; Harlov, B; Haungs, A; Carretero, JH; Higashide, K; Ikeda, D; Ikeda, H; Inoue, N; Inoue, S; Insolia, A; Isgrò, F; Itow, Y; Joven, E; Judd, EG; Jung, A; Kajino, F; Kajino, T; Kaneko, I; Karadzhov, Y; Karczmarczyk, J; Karus, M; Katahira, K; Kawai, K; Kawasaki, Y; Keilhauer, B; Khrenov, BA; Kim, JS; Kim, SW; Kim, SW; Kleifges, M; Klimov, PA; Kolev, D; Kreykenbohm, I; Kudela, K; Kurihara, Y; Kusenko, A; Kuznetsov, E; Lacombe, M; Lachaud, C; Lee, J; Licandro, J; Lim, H; López, F; Maccarone, MC; Mannheim, K; Maravilla, D; Marcelli, L; Marini, A; Martinez, O; Masciantonio, G; Mase, K; Matev, R; Medina-Tanco, G; Mernik, T; Miyamoto, H; Miyazaki, Y; Mizumoto, Y; Modestino, G; Monaco, A; Monnier-Ragaigne, D; Ríos, JAMD; Moretto, C; Morozenko, VS; Mot, B; Murakami, T; Nagano, M; Nagata, M; Nagataki, S; Nakamura, T; Napolitano, T; Naumov, D; Nava, R; Neronov, A; Nomoto, K; Nonaka, T; Ogawa, T; Ogio, S; Ohmori, H; Olinto, AV; Orleanski, P; Osteria, G; Panasyuk, MI; Parizot, E; Park, IH; Park, HW; Pastircak, B; Patzak, T; Paul, T; Pennypacker, C; Cano, SP; Peter, T; Picozza, P; Pierog, T; Piotrowski, LW; Piraino, S; Plebaniak, Z; Pollini, A; Prat, P; Prévôt, G; Prieto, H; Putis, M; Reardon, P; Reyes, M; Ricci, M; Rodríguez, I; Frías, MDR; Ronga, F; Roth, M; Rothkaehl, H; Roudil, G; Rusinov, I; Rybczynski, M; Sabau, MD; Cano, GS; Sagawa, H; Saito, A; Sakaki, N; Sakata, M; Salazar, H; Sánchez, S; Santangelo, A; Crúz, LS; Palomino, MS; Saprykin, O; Sarazin, F; Sato, H; Sato, M; Schanz, T; Schieler, H; Scotti, V; Segreto, A; Selmane, S; Semikoz, D; Serra, M; Sharakin, S; Shibata, T; Shimizu, HM; Shinozaki, K; Shirahama, T; Siemieniec-Ozieblo, G; López, HHS; Sledd, J; Slominska, K; Sobey, A; Sugiyama, T; Supanitsky, D; Suzuki, M; Szabelska, B; Szabelski, J; Tajima, F; Tajima, N; Tajima, T; Takahashi, Y; Takami, H; Takeda, M; Takizawa, Y; Tenzer, C; Tibolla, O; Tkachev, L; Tokuno, H; Tomida, T; Tone, N; Toscano, S; Trillaud, F; Tsenov, R; Tsunesada, Y; Tsuno, K; Tymieniecka, T; Uchihori, Y; Unger, M; Vaduvescu, O; Valdés-Galicia, JF; Vallania, P; Valore, L; Vankova, G; Vigorito, C; Villaseñor, L; von Ballmoos, P; Wada, S; Watanabe, J; Watanabe, S; Watts, J ; Weber, M; Weiler, TJ; Wibig, T; Wiencke, L; Wille, M; Wilms, J; Wlodarczyk, Z; Yamamoto, T; Yamamoto, Y; Yang, J; Yano, H; Yashin, IV; Yonetoku, D; Yoshida, K; Yoshida, S; Young, R; Zotov, MY; Marchi, AZ

EXPERIMENTAL ASTRONOMY Vol. 40 ( 1 ) page： 301 - 314 2015.11

Publisher：Experimental Astronomy

We are conducting tests of optical and electronics components of JEMEUSO at the Telescope Array site in Utah with a ground-based “EUSO-TA” detector. The tests will include an engineering validation of the detector, cross-calibration of EUSO-TA with the TA fluorescence detector and observations of air shower events. Also, the proximity of the TA’s Electron Light Source will allow for convenient use of this calibration device. In this paper, we report initial results obtained with the EUSO-TA telescope.

DOI： 10.1007/s10686-015-9441-6

JEM-EUSO: Meteor and nuclearite observations

Bertaina, M; Cellino, A; Ronga, F; Adams, JH ; Ahmad, S; Albert, JN; Allard, D; Anchordoqui, L; Andreev, V; Anzalone, A; Arai, Y; Asano, K; Pernas, MA; Barrillon, P; Batsch, T; Bayer, J; Bechini, R; Belenguer, T; Bellotti, R; Belov, K; Berlind, AA; Bertaina, M; Biermann, PL; Biktemerova, S; Blaksley, C; Blanc, N; Blecki, J; Blin-Bondil, S; Blümer, J; Bobik, P; Bogomilov, M; Bonamente, M; Briggs, MS; Briz, S; Bruno, A; Cafagna, F; Campana, D; Capdevielle, JN; Caruso, R; Casolino, M; Cassardo, C; Castellini, G; Catalano, C; Catalano, O; Cellino, A; Chikawa, M; Christl, MJ; Cline, D; Connaughton, V; Conti, L; Cordero, G; Crawford, HJ; Cremonini, R; Csorna, S; Dagoret-Campagne, S; de Castro, AJ; De Donato, C; de la Taille, C; De Santis, C; del Peral, L; Dell'Oro, A; De Simone, N; Di Martino, M; Distratis, G; Dulucq, F; Dupieux, M; Ebersoldt, A; Ebisuzaki, T; Engel, R; Falk, S; Fang, K; Fenu, F; Fernández-Gómez, I; Ferrarese, S; Finco, D; Flamini, M; Fornaro, C; Franceschi, A; Fujimoto, J; Fukushima, M; Galeotti, P; Garipov, G; Geary, J; Gelmini, G; Giraudo, G; Gonchari, M; Alvarado, CG; Gorodetzky, P; Guarino, F; Guzmán, A; Hachisu, Y; Harlov, B; Haungs, A; Carretero, JH; Ikeda, D; Ikeda, H; Inoue, N; Inoue, S; Insolia, A; Isgrò, F; Itowen, Y; Joven, E; Judd, EG; Jung, A; Kajino, F; Kajino, T; Kaneko, I; Karadzhov, Y; Karczmarczyk, J; Karus, M; Katahira, K; Kawai, K; Kawasaki, Y; Keilhauer, B; Khrenov, BA; Kim, JS; Kim, SW; Kim, SW; Kleifges, M; Klimov, PA; Kolev, D; Kreykenbohm, I; Kudela, K; Kurihara, Y; Kusenko, A; Kuznetsov, E; Lacombe, M; Lachaud, C; Lee, J; Licandro, J; Lim, H; López, F; Maccarone, MC; Mannheim, K; Maravilla, D; Marcelli, L; Marini, A; Martinez, O; Masciantonio, G; Mase, K; Matev, R; Medina-Tanco, G; Mernik, T; Miyamoto, H; Miyazaki, Y; Mizumoto, Y; Modestino, G; Monaco, A; Monnier-Ragaigne, D; de los Ríos, JAM; Moretto, C; Morozenko, VS; Mot, B; Murakami, T; Nagano, M; Nagata, M; Nagataki, S; Nakamura, T; Napolitano, T; Naumov, D; Nava, R; Neronov, A; Nomoto, K; Nonaka, T; Ogawa, T; Ogio, S; Ohmori, H; Olinto, AV; Orleanski, P; Osteria, G; Panasyuk, MI; Parizot, E; Park, IH; Park, HW; Pastircak, B; Patzak, T; Paul, T; Pennypacker, C; Cano, SP; Peter, T; Picozza, P; Pierog, T; Piotrowski, LW; Piraino, S; Plebaniak, Z; Pollini, A; Prat, P; Prévôt, G; Prieto, H; Putis, M; Reardon, P; Reyes, M; Ricci, M; Rodríguez, I; Frías, MDR; Ronga, F; Roth, M; Rothkaehl, H; Roudil, G; Rusinov, I; Rybczynski, M; Sabau, MD; Cano, GS; Sagawa, H; Saito, A; Sakaki, N; Sakata, M; Salazar, H; Sánchez, S; Santangelo, A; Crúz, LS; Palomino, MS; Saprykin, O; Sarazin, F; Sato, H; Sato, M; Schanz, T; Schieler, H; Scotti, V; Segreto, A; Selmane, S; Semikoz, D; Serra, M; Sharakin, S; Shibata, T; Shimizu, HM; Shinozaki, K; Shirahama, T; Siemieniec-Ozieblo, G; López, HHS; Sledd, J; Slominska, K; Sobey, A; Sugiyama, T; Supanitsky, D; Suzuki, M; Szabelska, B; Szabelski, J; Tajima, F; Tajima, N; Tajima, T; Takahashi, Y; Takami, H; Takeda, M; Takizawa, Y; Tenzer, C; Tibolla, O; Tkachev, L; Tokuno, H; Tomida, T; Tone, N; Toscano, S; Trillaud, F; Tsenov, R; Tsunesada, Y; Tsuno, K; Tymieniecka, T; Uchihori, Y; Unger, M; Vaduvescu, O; Valdés-Galicia, JF; Vallania, P; Valore, L; Vankova, G; Vigorito, C; Villaseñor, L; von Ballmoos, P; Wada, S; Watanabe, J; Watanabe, S; Watts, J ; Weber, M; Weiler, TJ; Wibig, T; Wiencke, L; Wille, M; Wilms, J; Odarczyk, ZW; Yamamoto, T; Yamamoto, Y; Yang, J; Yano, H; Yashin, IV; Yonetoku, D; Yoshida, K; Yoshida, S; Young, R; Zotov, MY; Marchi, AZ

EXPERIMENTAL ASTRONOMY Vol. 40 ( 1 ) page： 253 - 279 2015.11

Publisher：Experimental Astronomy

Meteor and fireball observations are key to the derivation of both the inventory and physical characterization of small solar system bodies orbiting in the vicinity of the Earth. For several decades, observation of these phenomena has only been possible via ground-based instruments. The proposed JEM-EUSO mission has the potential to become the first operational space-based platform to share this capability. In comparison to the observation of extremely energetic cosmic ray events, which is the primary objective of JEM-EUSO, meteor phenomena are very slow, since their typical speeds are of the order of a few tens of km/sec (whereas cosmic rays travel at light speed). The observing strategy developed to detect meteors may also be applied to the detection of nuclearites, which have higher velocities, a wider range of possible trajectories, but move well below the speed of light and can therefore be considered as slow events for JEM-EUSO. The possible detection of nuclearites greatly enhances the scientific rationale behind the JEM-EUSO mission.

DOI： 10.1007/s10686-014-9375-4

JEM-EUSO observational technique and exposure

Bertaina, M; Bobik, P; Fenu, F; Shinozaki, K; Adams, JH ; Ahmad, S; Albert, JN; Allard, D; Anchordoqui, L; Andreev, V; Anzalone, A; Arai, Y; Asano, K; Pernas, MA; Barrillon, P; Batsch, T; Bayer, J; Bechini, R; Belenguer, T; Bellotti, R; Belov, K; Berlind, AA; Bertaina, M; Biermann, PL; Biktemerova, S; Blaksley, C; Blanc, N; Blecki, J; Blin-Bondil, S; Blümer, J; Bobik, P; Bogomilov, M; Bonamente, M; Briggs, MS; Briz, S; Bruno, A; Cafagna, F; Campana, D; Capdevielle, JN; Caruso, R; Casolino, M; Cassardo, C; Castellini, G; Catalano, C; Catalano, O; Cellino, A; Chikawa, M; Christl, MJ; Cline, D; Connaughton, V; Conti, L; Cordero, G; Crawford, HJ; Cremonini, R; Csorna, S; Dagoret-Campagne, S; de Castro, AJ; De Donato, C; de la Taille, C; De Santis, C; del Peral, L; Dell'Oro, A; De Simone, N; Di Martino, M; Distratis, G; Dulucq, F; Dupieux, M; Ebersoldt, A; Ebisuzaki, T; Engel, R; Falk, S; Fang, K; Fenu, F; Fernández-Gómez, I; Ferrarese, S; Finco, D; Flamini, M; Fornaro, C; Franceschi, A; Fujimoto, J; Fukushima, M; Galeotti, P; Garipov, G; Geary, J; Gelmini, G; Giraudo, G; Gonchari, M; Alvarado, CG; Gorodetzky, P; Guarino, F; Guzmán, A; Hachisu, Y; Harlov, B; Haungs, A; Carretero, JH; Ikeda, D; Ikeda, H; Inoue, N; Inoue, S; Insolia, A; Isgrò, F; Itowen, Y; Joven, E; Judd, EG; Jung, A; Kajino, F; Kajino, T; Kaneko, I; Karadzhov, Y; Karczmarczyk, J; Karus, M; Katahira, K; Kawai, K; Kawasaki, Y; Keilhauer, B; Khrenov, BA; Kim, JS; Kim, SW; Kim, SW; Kleifges, M; Klimov, PA; Kolev, D; Kreykenbohm, I; Kudela, K; Kurihara, Y; Kusenko, A; Kuznetsov, E; Lacombe, M; Lachaud, C; Lee, J; Licandro, J; Lim, H; López, F; Maccarone, MC; Mannheim, K; Maravilla, D; Marcelli, L; Marini, A; Martinez, O; Masciantonio, G; Mase, K; Matev, R; Medina-Tanco, G; Mernik, T; Miyamoto, H; Miyazaki, Y; Mizumoto, Y; Modestino, G; Monaco, A; Monnier-Ragaigne, D; de los Ríos, JAM; Moretto, C; Morozenko, VS; Mot, B; Murakami, T; Nagano, M; Nagata, M; Nagataki, S; Nakamura, T; Napolitano, T; Naumov, D; Nava, R; Neronov, A; Nomoto, K; Nonaka, T; Ogawa, T; Ogio, S; Ohmori, H; Olinto, AV; Orleanski, P; Osteria, G; Panasyuk, MI; Parizot, E; Park, IH; Park, HW; Pastircak, B; Patzak, T; Paul, T; Pennypacker, C; Cano, SP; Peter, T; Picozza, P; Pierog, T; Piotrowski, LW; Piraino, S; Plebaniak, Z; Pollini, A; Prat, P; Prévôt, G; Prieto, H; Putis, M; Reardon, P; Reyes, M; Ricci, M; Rodríguez, I; Frías, MDR; Ronga, F; Roth, M; Rothkaehl, H; Roudil, G; Rusinov, I; Rybczynski, M; Sabau, MD; Cano, GS; Sagawa, H; Saito, A; Sakaki, N; Sakata, M; Salazar, H; Sánchez, S; Santangelo, A; Crúz, LS; Palomino, MS; Saprykin, O; Sarazin, F; Sato, H; Sato, M; Schanz, T; Schieler, H; Scotti, V; Segreto, A; Selmane, S; Semikoz, D; Serra, M; Sharakin, S; Shibata, T; Shimizu, HM; Shinozaki, K; Shirahama, T; Siemieniec-Ozieblo, G; López, HHS; Sledd, J; Slominska, K; Sobey, A; Sugiyama, T; Supanitsky, D; Suzuki, M; Szabelska, B; Szabelski, J; Tajima, F; Tajima, N; Tajima, T; Takahashi, Y; Takami, H; Takeda, M; Takizawa, Y; Tenzer, C; Tibolla, O; Tkachev, L; Tokuno, H; Tomida, T; Tone, N; Toscano, S; Trillaud, F; Tsenov, R; Tsunesada, Y; Tsuno, K; Tymieniecka, T; Uchihori, Y; Unger, M; Vaduvescu, O; Valdés-Galicia, JF; Vallania, P; Valore, L; Vankova, G; Vigorito, C; Villaseñor, L; von Ballmoos, P; Wada, S; Watanabe, J; Watanabe, S; Watts, J ; Weber, M; Weiler, TJ; Wibig, T; Wiencke, L; Wille, M; Wilms, J; Odarczyk, ZW; Yamamoto, T; Yamamoto, Y; Yang, J; Yano, H; Yashin, IV; Yonetoku, D; Yoshida, K; Yoshida, S; Young, R; Zotov, MY; Marchi, AZ

EXPERIMENTAL ASTRONOMY Vol. 40 ( 1 ) page： 117 - 134 2015.11

Publisher：Experimental Astronomy

Designed as the first mission to explore the ultra-high energy universe from space, JEM-EUSO observes the Earth’s atmosphere at night to record the ultraviolet tracks generated by the extensive air showers. We present the expected geometrical aperture and annual exposure in the nadir and tilt modes for ultra-high energy cosmic rays observation as a function of the altitude of the International Space Station.

DOI： 10.1007/s10686-014-9376-3

Performances of JEM-EUSO: angular reconstruction (vol 30, pg 153, 2015) Open Access

Adams, JH Jr; Ahmad, S; Albert, JN; Allard, D; Anchordoqui, L; Andreev, V; Anzalone, A; Arai, Y; Asano, K; Pernas, MA; Baragatti, P; Barrillon, P; Batsch, T; Bayer, J; Bechini, R; Belenguer, T; Bellotti, R; Belov, K; Berlind, AA; Bertaina, M; Biermann, PL; Biktemerova, S; Blaksley, C; Blanc, N; Blecki, J; Blin-Bondil, S; Blümer, J; Bobik, P; Bogomilov, M; Bonamente, M; Briggs, MS; Briz, S; Bruno, A; Cafagna, F; Campana, D; Capdevielle, JN; Caruso, R; Casolino, M; Cassardo, C; Castellini, G; Catalano, C; Catalano, O; Cellino, A; Chikawa, M; Christl, MJ; Cline, D; Connaughton, V; Conti, L; Cordero, G; Crawford, HJ; Cremonini, R; Csoma, S; Dagoret-Campagne, S; de Castro, AJ; De Donato, C; de la Taille, C; De Santis, C; del Peral, L; Dell'Oro, A; De Simone, N; Di Martino, M; Distratis, G; Dulucq, F; Dupieux, M; Ebersoldt, A; Ebisuzaki, T; Engel, R; Falk, S; Fang, K; Fenu, F; Fern'andez-G'omez, I; Ferrarese, S; Finco, D; Flamini, M; Fornaro, C; Franceschi, A; Fujimoto, J; Fukushima, M; Galeotti, P; Garipov, G; Geary, J; Gelmini, G; Giraudo, G; Gonchar, M; Alvarado, CG; Gorodetzky, P; Guarino, F; Guzmán, A; Hachisu, Y; Harlov, B; Haungs, A; Carretero, JH; Higashide, K; Ikeda, D; Ikeda, H; Inoue, N; Inoue, S; Insolia, A; Isgr'o, F; Itow, Y; Joven, E; Judd, EG; Jung, A; Kajino, F; Kajino, T; Kaneko, I; Karadzhov, Y; Karczmarczyk, J; Karus, M; Katahira, K; Kawai, K; Kawasaki, Y; Keilhauer, B; Khrenov, BA; Kim, JS; Kim, SW; Kim, SW; Kleifges, M; Klimov, PA; Kolev, D; Kreykenbohm, I; Kudela, K; Kurihara, Y; Kusenko, A; Kuznetsov, E; Lacombe, M; Lachaud, C; Lee, J; Licandro, J; Lim, H; L'opez, F; Maccarone, MC; Mannheim, K; Maravilla, D; Marcelli, L; Marini, A; Martinez, O; Masciantonio, G; Mase, K; Matev, R; Medina-Tanco, G; Mernik, T; Miyamoto, H; Miyazaki, Y; Mizumoto, Y; Modestino, G; Monaco, A; Monnier-Ragaigne, D; de los R'ios, JAM; Moretto, C; Morozenko, VS; Mot, B; Murakami, T; Nagano, M; Nagata, M; Nagataki, S; Nakamura, T; Napolitano, T; Naumov, D; Nava, R; Neronov, A; Nomoto, K; Nonaka, T; Ogawa, T; Ogio, S; Ohmori, H; Olinto, AV; Orlea'nski, P; Osteria, G; Panasyuk, MI; Parizot, E; Park, IH; Park, HW; Pastircak, B; Patzak, T; Paul, T; Pennypacker, C; Cano, SP; Peter, T; Picozza, P; Pierog, T; Piotrowski, LW; Piraino, S; Plebaniak, Z; Pollini, A; Prat, P; Pr'evot, G; Prieto, H; Putis, M; Reardon, P; Reyes, M; Ricci, M; Rodr'iguez, I; Fr'ias, MDR; Ronga, F; Roth, M; Rothkaehl, H; Roudil, G; Rusinov, I; Rybczy'nski, M; Sabau, MD; Cano, GS; Sagawa, H; Saito, A; Sakaki, N; Sakata, M; Salazar, H; S'anchez, S; Santangelo, A; Cr'uz, LS; Palomino, MS; Saprykin, O; Sarazin, F; Sato, H; Sato, M; Schanz, T; Schieler, H; Scotti, V; Segreto, A; Selmane, S; Semikoz, D; Serra, M; Sharakin, S; Shibata, T; Shimizu, HM; Shinozaki, K; Shirahama, T; Siemieniec-Ozieblo, G; L'opez, HHS; Sledd, J; Slomi'nska, K; Sobey, A; Sugiyama, T; Supanitsky, D; Suzuki, M; Szabelska, B; Szabelski, J; Tajima, F; Tajima, N; Tajima, T; Takahashi, Y; Takami, H; Takeda, M; Takizawa, Y; Tenzer, C; Tibolla, O; Tkachev, L; Tokuno, H; Tomida, T; Tone, N; Toscano, S; Trillaud, F; Tsenov, R; Tsunesada, Y; Tsuno, K; Tymieniecka, T; Uchihori, Y; Unger, M; Vaduvescu, O; Vald'es-Galicia, JF; Vallania, P; Valore, L; Vankova, G; Vigorito, C; Villasenor, L; von Ballmoos, P; Wada, S; Watanabe, J; Watanabe, S; Watts, J ; Weber, M; Weiler, TJ; Wibig, T; Wiencke, L; Wille, M; Wilms, J; Wlodarczyk, Z; Yamamoto, T; Yamamoto, Y; Yang, J; Yano, H; Yashin, IV; Yonetoku, D; Yoshida, K; Yoshida, S; Young, R; Zotov, MY

EXPERIMENTAL ASTRONOMY Vol. 40 ( 1 ) page： 179 - 181 2015.11

Performances of JEM-EUSO: energy and <i>X</i> <sub>max</sub> reconstruction Open Access

Adams, JH Jr; Ahmad, S; Albert, JN; Allard, D; Anchordoqui, L; Andreev, V; Anzalone, A; Arai, Y; Asano, K; Pernas, MA; Baragatti, P; Barrillon, P; Batsch, T; Bayer, J; Bechini, R; Belenguer, T; Bellotti, R; Belov, K; Berlind, AA; Bertaina, M; Biermann, PL; Biktemerova, S; Blaksley, C; Blanc, N; Blecki, J; Blin-Bondil, S; Blümer, J; Bobik, P; Bogomilov, M; Bonamente, M; Briggs, MS; Briz, S; Bruno, A; Cafagna, F; Campana, D; Capdevielle, JN; Caruso, R; Casolino, M; Cassardo, C; Castellini, G; Catalano, C; Catalano, O; Cellino, A; Chikawa, M; Christl, MJ; Cline, D; Connaughton, V; Conti, L; Cordero, G; Crawford, HJ; Cremonini, R; Csorna, S; Dagoret-Campagne, S; de Castro, AJ; De Donato, C; de la Taille, C; De Santis, C; del Peral, L; Dell'Oro, A; De Simone, N; Di Martino, M; Distratis, G; Dulucq, F; Dupieux, M; Ebersoldt, A; Ebisuzaki, T; Engel, R; Falk, S; Fang, K; Fenu, F; Fernández-Gómez, I; Ferrarese, S; Finco, D; Flamini, M; Fornaro, C; Franceschi, A; Fujimoto, J; Fukushima, M; Galeotti, P; Garipov, G; Geary, J; Gelmini, G; Giraudo, G; Gonchar, M; Alvarado, CG; Gorodetzky, P; Guarino, F; Guzmán, A; Hachisu, Y; Harlov, B; Haungs, A; Carretero, JH; Higashide, K; Ikeda, D; Ikeda, H; Inoue, N; Inoue, S; Insolia, A; Isgrò, F; Itow, Y; Joven, E; Judd, EG; Jung, A; Kajino, F; Kajino, T; Kaneko, I; Karadzhov, Y; Karczmarczyk, J; Karus, M; Katahira, K; Kawai, K; Kawasaki, Y; Keilhauer, B; Khrenov, BA; Kim, JS; Kim, SW; Kim, SW; Kleifges, M; Klimov, PA; Kolev, D; Kreykenbohm, I; Kudela, K; Kurihara, Y; Kusenko, A; Kuznetsov, E; Lacombe, M; Lachaud, C; Lee, J; Licandro, J; Lim, H; López, F; Maccarone, MC; Mannheim, K; Maravilla, D; Marcelli, L; Marini, A; Martinez, O; Masciantonio, G; Mase, K; Matev, R; Medina-Tanco, G; Mernik, T; Miyamoto, H; Miyazaki, Y; Mizumoto, Y; Modestino, G; Monaco, A; Monnier-Ragaigne, D; de los Ríos, JA; Moretto, C; Morozenko, VS; Mot, B; Murakami, T; Nagano, M; Nagata, M; Nagataki, S; Nakamura, T; Napolitano, T; Naumov, D; Nava, R; Neronov, A; Nomoto, K; Nonaka, T; Ogawa, T; Ogio, S; Ohmori, H; Olinto, AV; Orleanski, P; Osteria, G; Panasyuk, MI; Parizot, E; Park, IH; Park, HW; Pastircak, B; Patzak, T; Paul, T; Pennypacker, C; Cano, SP; Peter, T; Picozza, P; Pierog, T; Piotrowski, LW; Piraino, S; Plebaniak, Z; Pollini, A; Prat, P; Prévôt, G; Prieto, H; Putis, M; Reardon, P; Reyes, M; Ricci, M; Rodríguez, I; Frías, MDR; Ronga, F; Roth, M; Rothkaehl, H; Roudil, G; Rusinov, I; Rybczynski, M; Sabau, MD; Cano, GS; Sagawa, H; Saito, A; Sakaki, N; Sakata, M; Salazar, H; Sánchez, S; Santangelo, A; Cruz, LS; Palomino, MS; Saprykin, O; Sarazin, F; Sato, H; Sato, M; Schanz, T; Schieler, H; Scotti, V; Segreto, A; Selmane, S; Semikoz, D; Serra, M; Sharakin, S; Shibata, T; Shimizu, HM; Shinozaki, K; Shirahama, T; Siemieniec-Ozieblo, G; López, HHS; Sledd, J; Slominska, K; Sobey, A; Sugiyama, T; Supanitsky, D; Suzuki, M; Szabelska, B; Szabelski, J; Tajima, F; Tajima, N; Tajima, T; Takahashi, Y; Takami, H; Takeda, M; Takizawa, Y; Tenzer, C; Tibolla, O; Tkachev, L; Tokuno, H; Tomida, T; Tone, N; Toscano, S; Trillaud, F; Tsenov, R; Tsunesada, Y; Tsuno, K; Tymieniecka, T; Uchihori, Y; Unger, M; Vaduvescu, O; Valdés-Galicia, JF; Vallania, P; Valore, L; Vankova, G; Vigorito, C; Villaseñor, L; von Ballmoos, P; Wada, S; Watanabe, J; Watanabe, S; Watts, J ; Weber, M; Weiler, TJ; Wibig, T; Wiencke, L; Wille, M; Wilms, J; Wlodarczyk, Z; Yamamoto, T; Yamamoto, Y; Yang, J; Yano, H; Yashin, IV; Yonetoku, D; Yoshida, K; Yoshida, S; Young, R; Zotov, MY

EXPERIMENTAL ASTRONOMY Vol. 40 ( 1 ) page： 183 - 214 2015.11

Publisher：Experimental Astronomy

The Extreme Universe Space Observatory (EUSO) on–board the Japanese Experimental Module (JEM) of the International Space Station aims at the detection of ultra high energy cosmic rays from space. The mission consists of a UV telescope which will detect the fluorescence light emitted by cosmic ray showers in the atmosphere. The mission, currently developed by a large international collaboration, is designed to be launched within this decade. In this article, we present the reconstruction of the energy of the observed events and we also address the Xmax reconstruction. After discussing the algorithms developed for the energy and Xmax reconstruction, we present several estimates of the energy resolution, as a function of the incident angle, and energy of the event. Similarly, estimates of the Xmax resolution for various conditions are presented.

DOI： 10.1007/s10686-014-9427-9

21aCE-11 Neutron fundamental physics : Search for CP-violation effects in compound neutron resonance

Kitaguchi M., Shimizu H. M., Hirota K., Ichikawa G., Ino T., Asahi K., Momose T., Iwata T., Sakai K., Hino M., Yoshioka T., Shima T., Yamagata Y.

Meeting Abstracts of the Physical Society of Japan Vol. 70.1 ( 0 ) page： 254 2015

21aDL-2 Neutron lifetime measurement at J-PARC/BL05 : Data analysis 2014

Sumi N., Tanaka G., Otono H., Yoshioka T., Kitahara R., Iwashita Y., Yamada T., Katayama R., Azuma N., Yokoyama H., Sumino H., Yamashita S., Sakakibara R., Sugino T., Hirota K., Shimizu H., Kitaguchi M., Oide H., Seki Y., Shima T., Mishima K., Taketani K., Ino T.

Meeting Abstracts of the Physical Society of Japan Vol. 70.1 ( 0 ) page： 62 2015

21aDL-1 A present state of neutron lifetime measurement at J-PARC/BL05

Tanaka G., Sumi N., Yoshioka T., Otono H., Kitahara R., Iwashita Y., Yamada T., Katayama R., Azuma N., Yokoyama H., Sumino H., Yamashita S., Sakakibara R., Sugino T., Hirota K., Shimizu H., Kitaguchi M., Oide H., Seki Y., Shima T., Mishima K., Taketani K., Ino T.

Meeting Abstracts of the Physical Society of Japan Vol. 70.1 ( 0 ) page： 61 2015

21aCE-12 Measurement and analysis of partial wave mixing for CP-violation search in compound neutron resonance

Hirota K., Kitaguchi M., Shimizu H. M., Ichikawa G., Sugino T., Sakai K., Kimura A., Harada H., Ino T.

Meeting Abstracts of the Physical Society of Japan Vol. 70.1 ( 0 ) page： 255 2015

21aDL-3 Neutron lifetime measurement at J-PARC/BL05 : Systematic uncertainties 2014

Kitahara Ryunosuke, Iwashita Yoshihisa, Sakakibara Risa, Sugino Tomoaki, Hirota Katsuya, Shimizu Hirohiko M., Kitaguchi Masaaki, Yamada Takahito, Katayama Ryo, Higashi Nao, Yokoyama Harumichi, Sumino Hirochika, Yamashita Satoru, Tanaka Genki, Sumi Naoyuki, Otono Hidetoshi, Yoshioka Tamaki, Oide Hidetoshi, Seki Yoshichika, Mishima Kenji, Taketani Kaoru, Ino Takashi, Shima Tatsushi

Meeting Abstracts of the Physical Society of Japan Vol. 70.1 ( 0 ) page： 63 2015

26pSS-1 Neutron lifetime measurement at J-PARC/BL05 : Evaluation of systematic uncertainties by simulation

Nagakura Naoki, Katayama Ryo, Yamada Takahito, Higashi Nao, Yokoyama Harumichi, Sumino Hirochika, Yamashita Satoru, Shimizu Hirohiko M., Hirota Katsuya, Sakakibara Risa, Sugino Tomoaki, Kitaguchi Masaaki, Yoshioka Tamaki, Otono Hidetoshi, Tanaka Genki, Sumi Naoyuki, Iwashita Yoshihisa, Kitahara Ryunosuke, Oide Hideyuki, Shima Tatsushi, Mishima Kenji, Ino Takashi, Taketani Kaoru, Seki Yoshichika

Meeting Abstracts of the Physical Society of Japan Vol. 70.2 ( 0 ) page： 88 2015

26pSG-8 Neutron lifetime measurement at J-PARC/BL05 : Development of the detector

SUMI NAOYUKI, TOMITA TATSUHIKO, OTONO HIDETOSHI, YOSHIOKA TAMAKI, KITAHARA RYUNOSUKE, IWASHITA YOSHIHISA, YAMADA TAKAHITO, YAMASHITA SATORU, HIROTA KATSUYA, SHIMIZU HIROHIKO, KITAGUCHI MASAAKI, OIDE HIDEYUKI, SHIMA TATSUSHI, MISHIMA KENJI, TAKETANI KAORU, INO TAKASHI

Meeting Abstracts of the Physical Society of Japan Vol. 70.2 ( 0 ) page： 87 2015

26aSF-4 Measurement of the electric dipole moment of a neutron by the diffraction of the BGO crystal

Itoh Shigeyasu, Kitaguchi Masaaki, Shimizu Hirohiko

Meeting Abstracts of the Physical Society of Japan Vol. 70.2 ( 0 ) page： 250 2015

21pDF-11 Search for New Physics using the Enhancement of CP-violation Effects in Compound Nuclei

SHIMIZU Hirohiko M., KITAGUCHI Masaaki, HIROTA Katsuya, ICHIKAWA Go, INO Takashi, ASAHI Koichiro, MOMOSE Takamasa, IWATA Takahiro, SAKAI Kenji, HINO Masahiro, YOSHIOKA Tamaki, SHIMA Tatsushi, YAMAGATA Yutaka

Meeting Abstracts of the Physical Society of Japan Vol. 70.1 ( 0 ) page： 70 2015

21aDL-6 Optical System for the Neutron Anti-Neutron Oscillation Search Experiment Using Cold Neutrons

ICHIKAWA Go, SHIMIZU Hirohiko M., KITAGUCHI Masaaki, NNbar Collaboration

Meeting Abstracts of the Physical Society of Japan Vol. 70.1 ( 0 ) page： 66 2015

21aDL-4 Development of Multilayer Neutron Interferometer for Measurement of Gravitationally Induced Phases

Seki Y., Kitaguchi M., Hino M., Shimizu H. M., the NOP Collaboration

Meeting Abstracts of the Physical Society of Japan Vol. 70.1 ( 0 ) page： 64 2015

Development of accelerator-driven compact neutron sources Open Access

Hirota K., Ichikawa G., Kitaguchi M., Kiyanagi Y., Shimizu H.M., Tsuchida K., Uritani A., Watanabe K.

6th International Particle Accelerator Conference, IPAC 2015 page： 2535 - 2536 2015

The development of a low energy neutron accelerator for rebunching pulsed neutrons Open Access

Imajo S., Iwashita Y., Shimizu H.M., Kitaguchi M., Yamashita S., Arimoto Y., Yoshioka T., Seki Y.

IPAC 2014: Proceedings of the 5th International Particle Accelerator Conference page： 751 - 753 2014.7

Publisher：IPAC 2014: Proceedings of the 5th International Particle Accelerator Conference

Low energy neutrons can be accelerated or decelerated by the technique of AFP-NMR with RF in a gradient magnetic fields. The neutrons have magnetic moments, hence their potential energy are not cancelled before and after passage of magnetic fields and their kinetic energy change finally when their spins are flipped in the fields. Nowadays most measurements of the neutron electric dipole moment (nEDM) are carried out with ultra cold neutrons (UCN), whose kinetic energies are lower than about 300 neV, and with a small storage bottle to reduce the systematic errors. In such experiments highly dense UCNs are desired. The spallation neutron sources generate high-density neutrons at the target, however, the pulsed neutrons with spread velocities are diffused in guide tubes during long beam transport. It is necessary to concentrate UCN temporally upon the bottle by controlling their velocities for nEDM experiments at those facilities. We demonstrated such rebuncher and have been developed the advanced apparatus which makes it possible to handle broader energy range UCN. The design, measured specification of the new rebuncher is described in detail.

DOI： 10.18429/JACoW-IPAC2014-MOPRI065

Production of Ultra Cold Neutrons by a Doppler Shifter with Pulsed Neutrons at J-PARC

Mishima K., Imajo S., Hino M., Ino T., Iwashita Y., Katayama R., Kitaguchi M., Oda T., Shimizu H. M., Utsuro M., Yamashita S., Yoshioka T.

INTERNATIONAL WORKSHOP ON NEUTRON OPTICS AND DETECTORS (NOP&D 2013) Vol. 528 ( 1 ) 2014

Publisher：Journal of Physics: Conference Series

Ultracold neutrons (UCNs) are neutrons whose kinetic energy is around a few hundred nanoelectronvolts. Neutrons with such small kinetic energy can be trapped in a material vessel or magnetic fields. Because of these unique characteristics, UCNs are used for some important experiments of fundamental physics. The Doppler shifter is a device to produce UCN by slowing them down by the reflection on a mirror moving with half of the velocity of incoming neutrons. A Doppler shifter using a quadruple-stack of monochromatic supermirrors that reflects neutrons with a velocity around 68m/s [1, Hino et al.(2010)] was fabricated, and operated with a pulsed neutron source of J-PARC. An important feature of the Doppler shifter is the use of a pulsed neutron beam. Unlike in continuous neutron beams, the neutron velocity can be selected by choosing a time slice in a pulsed neutron bunch. Thus the UCN production improves by ∼80 times in the case of J-PARC. We successfully produced the UCNs by the Doppler shifter: the measured UCN production rate is consistent with the simulations. © Published under licence by IOP Publishing Ltd.

DOI： 10.1088/1742-6596/528/1/012030

18aSJ-1 Determination of neutron flux for the neutron lifetime measurement at J-PARC/BL05

Mishima Kenji, Yamashita Satoru, Yamada Takahito, Katayama Ryo, Higashi Nao, Yokoyama Harumichi, Sumino Hirochika, Sakakibara Risa, Sugino Tomoaki, Hirota Katsuya, Shimizu Hirohiko M., Kitaguchi Masaaki, Tanaka Genki, Sumi Naoyuki, Otono Hidetoshi, Yoshioka Tamaki, Kitahara Ryunosuke, Iwashida Yoshihisa, Oide Hidetoshi, Shima Tatsushi, Seki Yoshichika, Ino Takashi, Taketani Kaoru

Meeting Abstracts of the Physical Society of Japan Vol. 69.2.1 ( 0 ) page： 18 2014

18aSJ-2 Evaluation of improved TPC detector in the neutron lifetime measurement at J-PARC/BL05

Kitahara Ryunosuke, Iwashita Yoshihisa, Yamada Takahito, Katayama Ryo, Higashi Nao, Yokoyama Harumichi, Sumino Hirochika, Mishima Kenji, Yamashita Satoru, Sakakibara Risa, Sugino Tomoaki, Hirota Katsuya, Shimizu Hirohiko M., Kitaguchi Masaaki, Tanaka Genki, Sumi Naoyuki, Otono Hidetoshi, Yoshioka Tamaki, Oide Hidetoshi, Seki Yoshichika, Shima Tatsushi, Taketani Kaoru, Ino Takashi

Meeting Abstracts of the Physical Society of Japan Vol. 69.2.1 ( 0 ) page： 18 2014

28aTR-7 Neutron lifetime measurement at J-PARC/BL05 : Present status and future outlook

Mishima Kenji, Yamashita Satoru, Yamada Takahito, Katayama Ryo, Higashi Nao, Yokoyama Harumichi, Sumino Hirochika, Sakakibara Risa, Sugino Tomoaki, Hirota Katsuya, Shimizu Hirohiko M., Kitaguchi Masaaki, Tanaka Genki, Otono Hidetoshi, Yoshioka Tamaki, Oide Hidetoshi, Ino Takashi, Taketani Kaoru, Shima Tatsushi, Seki Yoshichika

Meeting Abstracts of the Physical Society of Japan Vol. 69.1.1 ( 0 ) page： 87 2014

29pSD-7 Systematic uncertainty for event id and future prospects of analysis in neutron lifetime measurement at J-PARC/BL05

Yamada Takahito, Yokoyama Harumichi, Higashi Nao, Katayama Ryo, Sumino H., Mishima Kenji, Yamashita Satoru, Sakakibara Risa, Sugino Tomoaki, Hirota Katsuya, Shimizu Hirohiko M., Kitaguchi Masaaki, Tanaka Genki, Otono Hidetoshi, Yoshioka Tamaki, Oide Hidetoshi, Seki Yoshichika, Ino Takashi, Taketani Kaoru, Shima Tatsushi

Meeting Abstracts of the Physical Society of Japan Vol. 69.1.1 ( 0 ) page： 36 2014

29pSD-6 Estimation of stability of beam flux and its systematic uncertainty in neutron lifetime measurement at J-PARC/BL05

Sakakibara Risa, Sugino Tomoaki, Hirota Katsuya, Shimizu Hirohiko M., Kitaguchi Masaaki, Higashi Nao, Yokoyama Harumichi, Yamada Takahito, Katayama Ryo, Sumino Hirochika, Mishima Kenji, Yamashita Satoru, Tanaka Genki, Otono Hidetoshi, Yoshioka Tamaki, Oide Hideyuki, Seki Yoshichika, Ino Takashi, Taketani Kaoru, Shima Tatsushi

Meeting Abstracts of the Physical Society of Japan Vol. 69.1.1 ( 0 ) page： 36 2014

29pSD-5 Present status of neutron lifetime measurement at J-PARC/BL05

Kitaguchi Masaaki, Sakakibara Risa, Sugino Tomoaki, Hirota Katsuya, Shimizu Hirohiko M., Yokoyama Harumichi, Higashi Nao, Yamada Takahito, Sumino Hirochika, Mishima Kenji, Yamashita Satoru, Tanaka Genki, Otono Hidetoshi, Yoshioka Tamaki, Oide Hidetoshi, Seki Yoshichika, Ino Takashi, Taketani Kaoru, Shima Tatsushi

Meeting Abstracts of the Physical Society of Japan Vol. 69.1.1 ( 0 ) page： 36 2014

Concepts of Neutron Polarisation Analysis Devices for a New Neutron Chopper Spectrometer, POLANO, in J-PARC

Ohoyama K., Yokoo T., Itoh S., Ino T., Ohkawara M., Oku T., Tasaki S., Iwasa K., Sato T. J., Ishimoto S., Taketani K., Kira H., Sakaguch Y., Nanbu M., Hiraka H., Shimizu H. M., Takeda M., Hino M., Hayashi K., Fliges U., Hautle P.

1ST CONFERENCE ON LIGHT AND PARTICLE BEAMS IN MATERIALS SCIENCE 2013 (LPBMS2013) Vol. 502 ( 1 ) 2014

Development of a new neutron mirror made of deuterated Diamond-like carbon

Sakurai Dai, Chiba Junsei, Ino Takashi, Kakusho Nobunori, Kaneko Naokatsu, Katayama Ryo, Kitaguchi Masaaki, Mishima Kenji, Muto Suguru, Ozeki Kazuhide, Seki Yoshichika, Shimizu Hirohiko M., Yamashita Satoru, Yoshioka Tamaki, Nishimura Daiki

INTERNATIONAL WORKSHOP ON NEUTRON OPTICS AND DETECTORS (NOP&D 2013) Vol. 528 ( 1 ) 2014

Publisher：Journal of Physics: Conference Series

We developed a new neutron mirror made of Diamond-like carbon (DLC). DLC is a film of amorphous carbon that has characteristics of both diamond and graphite. We produced DLC mirrors by ionization deposition method which is one of the chemical vapor deposition (CVD). Generally, DLC made by CVD contents a few tens of percentages of hydrogen. It decreases the Fermi potential of the DLC coating because hydrogen has negative Fermi potential. In order to increase the Fermi potential of the coating, we deuterated the DLC by using deuterated benzene for the source gas. The characteristics of the deuterated DLC(DDLC) coating was evaluated by RBS, ERDA, x-ray reflectivity, AFM. As a result, DDLC coating has 243neV due to deuteration, which is the same level as Ni. The RMS of height of the DDLC was 0.6nm so that the DDLC coating can be applied for a focusing mirror or specular transportation of pulsed neutron. Besides, we also develop Hydrogen/Deuterium DLC multiple layer mirror. So far, 4 layers mirror has been succeeded. © Published under licence by IOP Publishing Ltd.

DOI： 10.1088/1742-6596/528/1/012010

Rebunching ultracold neutrons by magnetic deceleration for the neutron edm experimental at J-parc Open Access

Imajo S., Iwashita Y., Geltenbort P., Arimoto Y., Shimizu H.M., Kitaguchi M., Yoshioka T., Seki Y.

IPAC 2013: Proceedings of the 4th International Particle Accelerator Conference page： 1187 - 1189 2013.12

Publisher：IPAC 2013: Proceedings of the 4th International Particle Accelerator Conference

Ultra cold neutrons (UCN), which have energies less than 300 neV, can be accelerated or decelerated by controlling static magnetic and RF fields. Neutron kinetic energies can inclease or declease when their spin flip. This method can be used to rebunch a pulsed beam of neutrons to a storage bottle that can store UCN with high density. High UCN densities can be achieved for precision measurements of neutron properties such as the Electric Dipole Moment. The results of a recent rst test experiments and present status of our development are reported.

Type-II entry of solar wind protons into the lunar wake: Effects of magnetic connection to the night-side surface

Nishino, MN; Fujimoto, M; Saito, Y; Tsunakawa, H; Kasahara, Y; Kawamura, M; Matsushima, M; Takahashi, F; Shibuya, H; Shimizu, H; Goto, Y; Hashimoto, K; Omura, Y; Kumamoto, A; Ono, T; Yokota, S

PLANETARY AND SPACE SCIENCE Vol. 87 page： 106 - 114 2013.10

Publisher：Planetary and Space Science

Our recent observations around the Moon revealed that so-called type-II (T2) entry of the solar wind protons into the near-Moon wake occurs when the IMF is dominated by the non-radial components (i.e. BY and/or B z). Under this condition a part of the solar wind protons scattered/reflected at the lunar dayside surface subsequently enters the central region of the near-Moon wake after a large-scale cycloid motion, which accelerates electrons along the filed line into the wake. The situation handled in the previous studies is that the relevant magnetic field line is detached from the lunar surface, leaving a possibility of the T2 entry under magnetic connection left open. Here we report that the protons can access the central wake region that is magnetically connected to the lunar nightsicle surface, which we categorize into the T2 entry with magnetic connection to the lunar surface (T2MC). Furthermore we show that the energy of the electron beams induced by the proton entry into the wake depends on the magnetic connectivity. Strong electron acceleration (up to several hundred eV to 1 keV) along the magnetic field associated with the T2 entry is prominent when the field line has its both ends in the solar wind, that is, when the magnetic field is detached from the lunar surface (i.e. the previously reported T2 entry that we rename toT2MD). On the other hand, no significant electron acceleration is found in the T2MC cases, although an enhancement of the electron flux associated with the T2 proton entry is evident. We also report that the T2 entry process takes place even under radial (Bx-dominated) IMF condition. Our results indicate that, while the T2 entry of solar wind protons into the wake itself does not require a special IMF condition but is a rather general phenomenon, the characteristic energy of associated electrons does show a strong dependence on the magnetic connectivity to the lunar surface. © 2013 Elsevier Ltd.

DOI： 10.1016/j.pss.2013.08.017

An evaluation of the exposure in nadir observation of the JEM-EUSO mission Open Access

Adams, JH; Ahmad, S; Albert, JN; Allard, D; Ambrosio, M; Anchordoqui, L; Anzalone, A; Arai, Y; Aramo, C; Asano, K; Ave, M; Barrillon, P; Batsch, T; Bayer, J; Belenguer, T; Bellotti, R; Berlind, AA; Bertaina, M; Biermann, PL; Biktemerova, S; Blaksley, C; Biccki, J; Blin-Bondil, S; Blümer, J; Bobik, P; Bogomilov, M; Bonamente, M; Briggs, MS; Briz, S; Bruno, A; Cafagna, F; Campana, D; Capdevielle, JN; Caruso, R; Casolino, M; Cassardo, C; Castellini, G; Catalano, O; Cellino, A; Chikawa, M; Christi, MJ; Connaughton, V; Cortés, JF; Crawford, HJ; Cremonini, R; Csorna, S; D'Olivo, JC; Dagoret-Campagne, S; de Castro, AJ; De Donato, C; de la Taille, C; del Peral, L; Dell'Oro, A; De Pascale, MP; Di Martino, M; Distratis, G; Dupieux, M; Ebersoldt, A; Ebisuzaki, T; Engel, R; Falk, S; Fang, K; Fenu, F; Fernández-Gómez, I; Ferrarese, S; Franceschi, A; Fujimoto, J; Galeotti, P; Garipov, G; Geary, J; Giaccari, UG; Giraudo, G; Gonchar, M; Alvarado, CG; Gorodetzky, P; Guarino, F; Guzmán, A; Hachisu, Y; Harlov, B; Haungs, A; Carretero, JH; Higashide, K; Iguchi, T; Ikeda, H; Inoue, N; Inoue, S; Insolia, A; Isgrò, F; Itow, Y; Joven, E; Judd, EG; Jung, A; Kajino, F; Kajino, T; Kaneko, I; Karadzhov, Y; Karczmarczyk, J; Katahira, K; Kawai, K; Kawasaki, Y; Keilhauer, B; Khrenov, BA; Kim, JS; Kim, SW; Kim, SW; Kleifges, M; Klimov, PA; Ko, SH; Kolev, D; Kreykenbohm, I; Kudela, K; Kurihara, Y; Kuznetsov, E; La Rosa, G; Lee, J; Licandro, J; Lim, H; López, F; Maccarone, MC; Mannheim, K; Marcelli, L; Marini, A; Martin-Chassard, G; Martinez, O; Masciantonio, G; Mase, K; Matev, R; Maurissen, A; Medina-Tanco, G; Mernik, T; Miyamoto, H; Miyazaki, Y; Mizumoto, Y; Modestino, G; Monnier-Ragaigne, D; de los Rios, JAM; Mot, B; Murakami, T; Nagano, M; Nagata, M; Nagataki, S; Nakamura, T; Nam, JW; Nam, S; Nam, K; Napolitano, T; Naumov, D; Neronov, A; Nomoto, K; Ogawa, T; Ohmori, H; Olinto, AV; Orleanski, P; Osteria, G; Pacheco, N; Panasyuk, MI; Parizot, E; Park, IH; Pastircak, B; Patzak, T; Paul, T; Pennypacker, C; Peter, T; Picozza, P; Pollini, A; Prieto, H; Reardon, P; Reinabi, M; Reyes, M; Ricci, M; Rodriguez, I; Frias, MDR; Ronga, F; Rothkaehl, H; Roudil, G; Rusinov, I; Rybczynski, M; Sabau, MD; Cano, GS; Saito, A; Sakaki, N; Sakata, M; Salazar, H; Sanchez, S; Santangelo, A; Cruz, LS; Palomino, MS; Saprykin, O; Sarazin, F; Sato, H; Sato, M; Schanz, T; Schieler, H; Scotti, V; Scuderi, M; Segreto, A; Selmane, S; Semikoz, D; Serra, M; Sharakin, S; Shibata, T; Shimizu, HM; Shinozaki, K; Shirahama, T; Siemieniec-Ozigbio, G; López, HHS; Sledd, J; Slomiriska, K; Sobey, A; Sugiyama, T; Supanitsky, D; Suzuki, M; Szabelska, B; Szabelski, J; Tajima, F; Tajima, N; Tajima, T; Takahashi, Y; Takami, H; Takeda, M; Takizawa, Y; Tenzer, C; Tibolla, O; Tkachev, L; Tomida, T; Tone, N; Trillaud, F; Tsenov, R; Tsuno, K; Tymieniecka, T; Uchihori, Y; Vaduvescu, O; Valdés-Galicia, JF; Vallania, P; Valore, L; Vankova, G; Vigorito, C; Villaseñor, L; von Ballmoos, P; Wada, S; Watanabe, J; Watanabe, S; Watts, J ; Weber, M; Weiler, TJ; Wibig, T; Wiencke, L; Wille, M; Wilms, J; Wlodarczyk, Z; Yamamoto, T; Yamamoto, Y; Yang, J; Yano, H; Yashin, IV; Yonetoku, D; Yoshida, K; Yoshida, S; Young, R; Zamora, A; Marchi, AZ

ASTROPARTICLE PHYSICS Vol. 44 page： 76 - 90 2013.4

Publisher：Astroparticle Physics

We evaluate the exposure during nadir observations with JEM-EUSO, the Extreme Universe Space Observatory, on-board the Japanese Experiment Module of the International Space Station. Designed as a mission to explore the extreme energy Universe from space, JEM-EUSO will monitor the Earth's nighttime atmosphere to record the ultraviolet light from tracks generated by extensive air showers initiated by ultra-high energy cosmic rays. In the present work, we discuss the particularities of space-based observation and we compute the annual exposure in nadir observation. The results are based on studies of the expected trigger aperture and observational duty cycle, as well as, on the investigations of the effects of clouds and different types of background light. We show that the annual exposure is about one order of magnitude higher than those of the presently operating ground-based observatories. © 2013 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.astropartphys.2013.01.008

Basic Concepts of Polarisation Analysis for Neutron Chopper Spectrometer POLANO at J-PARC

Ohoyama, K; Yokoo, T; Itoh, S; Suzuki, J; Iwasa, K; Sato, TJ; Kira, H; Sakaguchi, Y; Ino, T; Oku, T; Tomiyasu, K; Matsuura, M; Hiraka, H; Fujita, M; Kimura, H; Sato, T; Suzuki, J; Shimizu, HM; Arima, T; Takeda, M; Kaneko, K; Hino, M; Muto, S; Nojiri, H; Lee, CH; Park, JG; Choi, S

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN Vol. 82 2013.1

Magnetic Neutron Optics and Its Applications

SHIMIZU Hirohiko

Journal of the Japan Society for Precision Engineering Vol. 79 ( 9 ) page： 809 - 812 2013

The improvement of the ultracold neutrons rebuncher for nEDM experiments at J-PARC

Imajo S., Iwashita Y., Shimizu H.M., Kitaguchi M., Yoshioka T., Arimoto Y., Seki Y., NOP collaboration

Meeting Abstracts of the Physical Society of Japan Vol. 68.2.1 ( 0 ) page： 28 2013

27pHC-13 中性子を用いた重力法則の検証(27pHC 実験核物理領域,素粒子実験領域,ビーム物理領域,理論核物理領域合同 J-PARCと原子核素粒子実験,実験核物理領域)

松本悟, 吉岡瑞樹, 清水裕彦, 嶋達志, 猪野隆, 北口雅暁, 三島賢二

日本物理学会講演概要集 Vol. 68.1.1 ( 0 ) page： 96 2013

27aRF-2 The improvement of Dopplershifter in J-PARC/MLF to increase the ultracold neutron flux-

Imajo S., Iwashita Y., Shimizu H. M., Yoshioka T., Kitaguchi M., Mishima K., Ino T., Arimoto Y., Seki Y., NOP collaboration

Meeting Abstracts of the Physical Society of Japan Vol. 68.1.1 ( 0 ) page： 29 2013

26aXZB-2 Progress of Polarisation Analysis Neutron Spectrometer Project in J-PARC

Ohoyama K., Yokoo T., Itoh S., Suzuki J., Sato T. J., Iwasa K., Kira H., Sakaguchi Y., Oku T., Ino T., Hiraka H., Matsuura M., Fujita M., Tomiyasu K., Kimura H., Suzuki J., Shimizu H. M., Arima T., Takeda M., Kaneko K., Hino M., Muto S., Nojiri H., Lee C. H., Park J. G., Choi S.

Meeting Abstracts of the Physical Society of Japan Vol. 68.1.4 ( 0 ) page： 1012 2013

26aXZB-2 Progress of Polarisation Analysis Neutron Spectrometer Project in J-PARC

Ohoyama K., Yokoo T., Itoh S., Suzuki J., Sato T. J., Iwasa K., Kira H., Sakaguchi Y., Oku T., Ino T., Hiraka H., Matsuura M., Fujita M., Tomiyasu K., Kimura H., Suzuki J., Shimizu H. M., Arima T., Takeda M., Kaneko K., Hino M., Muto S., Nojiri H., Lee C. H., Park J. G., Choi S.

Meeting Abstracts of the Physical Society of Japan Vol. 68.1.1 ( 0 ) page： 146 2013

Fundamental physics with slow neutrons Open Access

Shimizu H.

Proceedings of Science Vol. 2013-December 2013

Publisher：Proceedings of Science

A neutron beamline for the study of the fundamental physics has been constructed at the spallation neutron source of the Japan Proton Accelerator Research Complex (J-PARC). In-flight measurement of the neutron lifetime and the preparation for the study of T-violation using neutrons is in progress. Present status of the beamline and present activities are reported.

DOI： 10.22323/1.208.0010

Magnetic shield design of in-situ SEOP polarized <sup>3</sup>He neutron spin filter system Open Access

Kira H., Sakaguchi Y., Suzuki J., Oku T., Nakamura M., Arai M., Kakurai K., Endo Y., Arimoto Y., Ino T., Shimizu H.M., Kamiyama T., Ohoyama K., Hiraka H., Tsutsumi K., Yamada K., Chang L.J.

Physics Procedia Vol. 42 page： 200 - 205 2013

Publisher：Physics Procedia

A polarized 3He neutron spin filter requires a suitably homogeneous magnetic environment to avoid depolarization of 3He nuclear spin. In the present study, we discussed the required performance of the magnetic shield for an in-situ spin exchange optical pumping neutron spin filter system and designed a magnetic shield with T1mag > 100 h under a magnetic field of 3.5 mT perpendicular to the guide field. We then constructed the magnetic shield and confirmed its performance. Finally, we succeeded in developing a magnetic shield for a polarized 3He neutron spin filter system for J-PARC. © 2013 The Authors.

DOI： 10.1016/j.phpro.2013.03.195

Rebunching low energy neutrons by magnetic acceleration and deceleration Open Access

Iwashita Y., Imajo S., Kitaguchi M., Arimoto Y., Shimizu H.M., Yoshioka T., Seki Y., Geltenbort P.

IPAC 2012 - International Particle Accelerator Conference 2012 page： 2766 - 2768 2012.12

Publisher：IPAC 2012 - International Particle Accelerator Conference 2012

Acceleration control for neutrons was demonstrated. Ultra cold neutrons (UCN) -neutrons with energies less than 300 neV - can be accelerated or decelerated by means ofstatic magnetic and RF fields. Neutrons have a magnetic dipole moment, and hence theirkinetic energies vary depending on their spin in magnetic fields. Their kinetic energiesare restored when they leave the magnetic field area if their spin did not flip. A spinflip can be triggered by applying an RF field whose frequency coincides with the spinprecession frequency of a neutron in this magnetic field. This allows to tune the kineticenergy of neutrons. This method can be used to rebunch a pulsed beam of neutrons to astorage bottle that can store UCN. By opening and closing the storage bottle synchronouslywith the rebuncher, high UCN densities can be achieved for precision measurements ofneutron properties such as the Electric Dipole Moment. Copyright © 2012 by IEEE.

Demonstration of focusing by a neutron accelerator

Arimoto, Y; Gertenbort, P; Imajo, S; Iwashita, Y; Kitaguchi, M; Seki, Y; Shimizu, HM; Yoshioka, T

PHYSICAL REVIEW A Vol. 86 ( 2 ) 2012.8

Publisher：Physical Review A - Atomic, Molecular, and Optical Physics

Space-time focusing was demonstrated by a neutron accelerator. Test experiments were performed by using very slow neutrons at High-Flux Reactor at Institut Laue-Langevin. Focusing of neutrons at the detector position through the accelerator was observed. Focusing neutrons enables us to transport the neutrons while maintaining density from source to experimental position. This will be a powerful technique for measurement of the permanent electric dipole moment of neutrons, which require a high density of neutrons. © 2012 American Physical Society.

DOI： 10.1103/PhysRevA.86.023843

Variable permanent magnet multipoles

Iwashita Y., Yamada M., Ushijima S., Fuwa Y., Nasu Y., Tongu H., Masuzawa M., Shimizu H.

IEEE Transactions on Applied Superconductivity Vol. 22 ( 3 ) 2012.6

Publisher：IEEE Transactions on Applied Superconductivity

Permanent magnet quadrupoles (PMQ) and sextupoles (PMSx) have been fabricated and tested. Their effective strengths are variable. The PMQ has been developed as a final focus magnet for a linear collider. There is enough space to put Gluckstern's 5-ring singlet structures in each incoming beam line. The magnetic center offsets and higher harmonic components can be adjusted by adjusting the positions of the magnet pieces with screws on holders. The measured integrated gradient can be reduced down to less than 1% of the maximum strength. The PMSx has been developed to focus pulsed cold neutrons for a small angle neutron scattering (SANS) experiment. The strength is modulated by a so called double ring structure, where the inner ring is fixed and the outer ring is rotated. A torque canceller can reduce the torque to rotate the outer ring by one third of its original magnitude. The focal length of the fabricated triplet lens is less than 50 cm for Very Cold Neutrons (VCN). It is demonstrated that VCN-SANS can shorten a SANS beamline, which usually has a few tens of meters, down to 2 ∼ 3 meters. © 2002-2011 IEEE.

DOI： 10.1109/TASC.2012.2185471

Demonstration of optical thickness measurement using multilayer cold neutron interferometer

Seki Y., Uda J., Funahashi H., Kitaguchi M., Hino M., Otake Y., Taketani K., Shimizu H. M.

5TH EUROPEAN CONFERENCE ON NEUTRON SCATTERING Vol. 340 2012

Publisher：Journal of Physics: Conference Series

We have measured the optical thickness of a phase object for the first time using multilayer cold neutron interferometer. The measured phase shift of 15.1 ± 1.9 wavelength agreed with the expected value of 17.4 ± 0.7 wavelength due to an about 600-μm-thick silicon plate. This demonstration reconfirmed that two paths in our new interferometer were completely separate, and showed its applicability into various precise measurements.

DOI： 10.1088/1742-6596/340/1/012039

14aSG-3 低エネルギー中性子小角散乱を用いた重力法則の検証(14aSG 新粒子・新物理の探索,素粒子実験領域)

松本悟, 吉岡瑞樹, 清水裕彦, 嶋達志, 猪野隆

日本物理学会講演概要集 Vol. 67.2.1 ( 0 ) page： 25 2012

11aSG-7 Development of a ultracold neutrons rebuncher in J-PARC/MLF

Imajo S., Iwashita Y., Shimizu H. M., Yoshioka T., Kitaguchi M., Arimoto Y., Seki Y., NOP collaboration

Meeting Abstracts of the Physical Society of Japan Vol. 67.2.1 ( 0 ) page： 13 2012

11aSG-6 Estimation of nonspecular reflection of ultracold neutrons from surface roughness

Seki Yoshichika, Kitaguchi Masaaki, Yoshioka Tamaki, Shimizu Hirohiko, Yamada Norifumi, NOP Collaboration

Meeting Abstracts of the Physical Society of Japan Vol. 67.2.1 ( 0 ) page： 13 2012

11aSG-5 Development of neutron mirror with diamond-like carbon film

Sakurai D., Shimizu H., Ino T., Yoshioka T., Kitaguchi M., Mishima K., Kakusho N., the NOP Collaboration

Meeting Abstracts of the Physical Society of Japan Vol. 67.2.1 ( 0 ) page： 13 2012

24aFA-7 Demonstration of transport system of high-density ultra-cold neutrons for nEDM measurement

Kitaguchi M., Yoshioka T., Shimizu H. M., Arimoto Y., Taketani K., Ino T., Muto G., Iwashita Y., Imajo S., Mishima K., Kamiya Y., Yamashita S., Seki Y., Asahi K., Yoshimi A., Shima T.

Meeting Abstracts of the Physical Society of Japan Vol. 67.1.1 ( 0 ) page： 24 2012

27aXC-10 ∧ photoproduction detected with electromagnetic calorimeter FOREST

Tsuchikawa Y., Fujimura H., Hashimoto R., Ishikawa T., Masumoto S., Miyabe M., Nakamura A., Shimizu H, Suzuki K., Yamazaki H.

Meeting Abstracts of the Physical Society of Japan Vol. 67.1.1 ( 0 ) page： 112 2012

25pCL-5 Limiting factors to attainable ^3He-plarization in spin-exchange optical pumping of polarized ^3He neutron spin filters

Sakaguchi Y., Kira H., Oku T., Shinohara J., Suzuki J., Sakai K., Nakamura M., Suzuya K., Aizawa K., Arai M., Takeda N, Endoh Y., Arimoto Y., Ino T., Shimizu M., Kamiyama T., Ohoyama K., Hiraka H., Yamada K., Chang L. J., Ohara K., Kakurai K.

Meeting Abstracts of the Physical Society of Japan Vol. 67.1.4 ( 0 ) page： 1006 2012

25pCL-14 Progress of Polarisation Analysis Neutron Spectrometer Project in J-PARC

Ohoyama K., Iwasa K., Yokoo Y., Itoh S., Tomiyasu K., Matusura M., Hiraka H., Fujita M., Kimura H., Sato T., Sato T.J., Arima T., Ino T., Kira H., Sakaguchi Y., Oku T., Arimoto Y., Suzuki J., Shimizu H.M., Takeda M., Kaneko K., Hino M., Muto G., Nojiri H.

Meeting Abstracts of the Physical Society of Japan Vol. 67.1.4 ( 0 ) page： 1008 2012

Development of polarized Xe gas target for neutron experiment at J-PARC

Sakai K., Oku T., Shinohara T., Kira H., Ooi M., Maekawa F., Kakurai K., Ino T., Arimoto Y., Shimizu H. M., Sakaguchi Y., Suzuki J., Ohoyama K., Chang L. J.

5TH EUROPEAN CONFERENCE ON NEUTRON SCATTERING Vol. 340 2012

Publisher：Journal of Physics: Conference Series

At the Materials and Life science experimental Facility (MLF) in J-PARC, an experiment of detecting a neutron polarizing ability caused by a neutron-nuclear spin correlation at a resonant peak of 129Xe is planned. We evaluated measurable quantities based on a neutron optical theorem, developed a polarized Xe gas system, and carried out a feasibility test of our apparatus.

DOI： 10.1088/1742-6596/340/1/012037

Measurement of the neutron beam polarization of BL05/NOP beamline at J-PARC

Ino, T; Arimoto, Y; Yoshioka, T; Mishima, K; Taketani, K; Muto, S; Shimizu, HM; Kira, H; Sakaguchi, Y; Oku, T; Sakai, K; Shinohara, T; Suzuki, J; Otono, H; Oide, H; Yamashita, S; Imajo, S; Funahashi, H; Yamada, M; Iwashita, Y; Kitaguchi, M; Hino, M; Suzuki, Z; Sanuki, T; Seki, T; Hirota, K; Ikeda, K; Sato, H; Otake, Y; Ohmori, H; Morishima, T; Shima, T

PHYSICA B-CONDENSED MATTER Vol. 406 ( 12 ) page： 2424 - 2428 2011.6

Publisher：Physica B: Condensed Matter

We measured the neutron beam polarization of the BL05/NOP (Neutron Optics and Physics) beamline at J-PARC with an accuracy of less than 10-3 using polarized 3He gas as a neutron spin analyzer. Precise polarimetry of the neutron beam is necessary to understand the beamline optics as well as for the asymmetry measurements of the neutron beta decay, which are planned in this beamline. © 2010 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.physb.2011.01.009

Development and test of SEOP neutron spin filter in Japan

Kira H., Sakaguchi Y., Oku T., Suzuki J., Nakamura M., Arai M., Kakurai K., Endo Y., Arimoto Y., Ino T., Shimizu H.M., Kamiyama T., Tsutsumi K., Ohoyama K., Hiraka H., Yamada K., Chang L.J.

Physica B: Condensed Matter Vol. 406 ( 12 ) page： 2433 - 2435 2011.6

Publisher：Physica B: Condensed Matter

We have begun the development of an in-situ spin-exchange optical pumping (SEOP) system aiming to use it as a neutron spin filter for incident beam polarization at the Japan Proton Accelerator Research Complex (J-PARC). To use it, it is recommended that the optics be adjusted easily, have high stability, and have a small size. In this paper we improved our previous SEOP system aiming to use it in J-PARC and performed a neutron beam test at the JRR-3 NOP beamline to see the performance of the neutron spin filter (NSF). The polarization of the 3He gas reached 73%. This paper gives the present status of the development of in-situ SEOP system in J-PARC. © 2010 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.physb.2010.12.019

External cavity design of high-power diode laser for polarized helium-3 neutron spin filters based on spin-exchange optical pumping

Arimoto Y., Ino T., Shimizu H.M., Kamiyama T., Kira H., Oku T., Sakaguchi Y., Kakurai K., Sakai K., Suzuki J., Koizumi S., Arai M., Endo Y., Nakamura M., Shinohara T., Takeda M., Wakimoto S., Yamazaki D., Ohoymama K., Hiraka H., Yamada K., Tsutsumi K., Chang L.J.

Physica B: Condensed Matter Vol. 406 ( 12 ) page： 2439 - 2442 2011.6

Publisher：Physica B: Condensed Matter

Polarized neutron spin filters are being developed based on spin-exchange optical pumping. In the present study a high-power diode laser (85 W) was used to excite Rb atoms and the laser linewidth was narrowed using an external cavity. The optics in the external cavity were designed by ray tracing. The ray-trace calculations demonstrated that a doublet lens in front of the laser eliminates aberrations. The maximum spectral peak height in the doublet optics was found to be 25% higher than for a singlet lens. © 2010 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.physb.2010.11.089

A transport optics for pulsed ultracold neutron sources

Shimizu H.M., Iwashita Y., Kitaguchi M., Mishima K., Yoshioka T.

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Vol. 634 ( 1 SUPPL. ) page： S25 - S27 2011.4

Publisher：Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

High-density ultracold neutron (UCN) is commonly desired for the improvement of the experimental sensitivity to measure the electric dipole moment of neutrons. We discuss a method to suppress the decrease of the UCN density in transporting UCNs to the spatially separated storage volume by changing the UCN velocity synchronizing to the UCN time-of-flight. © 2010 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2010.06.210

The performance of magnetic lens for focusing VCN-SANS

Yamada, M; Iwashita, Y; Kanaya, T; Ichikawa, M; Tongu, H; Kennedy, SJ; Shimizu, HM; Mishima, K; Yamada, NL; Hirota, K; Carpenter, JM; Lal, J; Andersen, K; Geltenbort, P; Guerard, B; Manzin, G; Hino, M; Kitaguchi, M; Bleuel, M

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT Vol. 634 ( 1 SUPPL. ) page： S156 - S160 2011.4

Publisher：Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

We have developed a prototype rotating-permanent magnet sextupole lens (named rot-PMSx) for more efficient experiments with neutron beams in time of flight (ToF) mode. This lens can modulate the focusing strength over range 1.5×104T/m2g′5.9×104T/ m2. Synchronization between the modulation and the beam pulse produces a focused beam without significant chromatic aberration. We anticipate that this lens could be utilized in focusing small angle neutron scattering (SANS) instruments for novel approach to high resolution SANS. We carried out experiments testing the principle of this lens at the very cold neutron (VCN) beamline (PF2) at Institut Laue-Langevin (ILL), France. The focused beam image size at the detector was kept constant at the same beam size as the source (≈3mm) over a wavelength range of 30λ48 in focal length of ≈1.14m. The flux gain was about 12 relative to a beam without focusing, and the depth of focus was quite large. These results show the good performance of this lens and the system. Thereupon we have demonstrated the performance of this test bed for high resolution focusing of VCN-SANS for a well-studied softmatter sample; a deuterium oxide solution of Pluronic F127, an (PEO)100(PPO) 65(PEO)100 tri-block copolymer in deuterium oxide. The results of the focusing experiment and the focusing VCN-SANS are presented. © 2010 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2010.06.259

Satellite pulsed tiny neutron source at Kyoto University, Sakyo

Iwashita Y., Nagae T., Tanimori T., Fujioka H., Shimizu H.

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Vol. 634 ( 1 SUPPL. ) 2011.4

Publisher：Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

A pulsed neutron source facility will be constructed at Kyoto University, where the accelerated 3.5 MeV proton beam will bombard a Li or Be target to generate neutrons. The average current, the pulse width and the typical repetition rate are 100 μA, 100 μs and 70 Hz, respectively. The purposes of the system are neutron imaging, material science, fundamental physics, etc. This kind of compact facility, which can be distributed at modest cost, will help to incubate new ideas and promote growth of neutron science worldwide. © 2010 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2010.06.356

A high <i>S</i>/<i>N</i> ratio spin flip chopper system for a pulsed neutron source

Taketani, K; Ebisawa, T; Hino, M; Hirota, K; Ino, T; Kitaguchi, M; Mishima, K; Muto, S; Oide, H; Oku, T; Otone, H; Sakai, K; Shima, T; Shimizu, HM; Yamashita, S; Yoshioka, T

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT Vol. 634 page： S134 - S137 2011.4

16aSD-5 Development of transport system of high-density ultra-cold neutrons for nEDM measurement II

Kitaguchi M., Yoshioka T., Mishima K., Arimoto Y., Taketani K., Ino T., Muto G., Shimizu H.M., Iwashita Y., Imajo S., Kamiya Y., Yamashita S., Asahi K., Yoshimi A., Shima T., NOP collaboration

Meeting Abstracts of the Physical Society of Japan Vol. 66.2.1 ( 0 ) page： 14 2011

16aSD-7 Ultracold neutron generation by means of Doppleishifter in J-PARC/MLF III

Imajo S., Fujioka H., Shimizu H.M., Mishima K., Yoshioka T., Kitagurhi M., Hino M., NOP collaboration

Meeting Abstracts of the Physical Society of Japan Vol. 66.2.1 ( 0 ) page： 15 2011

22aJA-6 Development of glass cells for polarized ^3He neutron spin filters IV

Sakaguchi Y., Kira H., Oku T., Shinohara T., Suzuki J., Sakai K., Nakamura M., Suzuya K., Aizawa K., Arai M., Takeda M., Endoh Y., Arimoto Y., Ino T., Shimizu H. M., Kamiyama T., Ohoyama K., Hiraka H., Yamada K., Chang L. J., Ohara K., Kakurai K.

Meeting Abstracts of the Physical Society of Japan Vol. 66.2.4 ( 0 ) page： 983 2011

28aGB-8 Development of transport system of high-density ultra-cold neutrons for nEDM measurement

Kitaguchi M., Yoshioka T., Mishima K., Arimoto Y., Taketani K., Ino T., Muto G., Shimizu H. M., Iwashita Y., Imajo S., Kamiya Y., Yamashita S., Asahi K., Yoshimi A., Shima T., NOP collaboration

Meeting Abstracts of the Physical Society of Japan Vol. 66.1.1 ( 0 ) page： 31 2011

28aGB-7 Ultracold neutron generation by means of Dopplershifter in J-PARC/MLF

Imajo S., Fujioka H., Shimizu H. M., Mishima K., Yoshioka T., Kitaguchi M., Hino M., NOP collaboration

Meeting Abstracts of the Physical Society of Japan Vol. 66.1.1 ( 0 ) page： 31 2011

25aTN-6 Present Status of Polarized Spectrometer Project in J-PARC

Ohoyama K., Iwasa K., Itoh S., Yokoo Y., Hiraka H., Fujita M., Matusura M., Sato T., Horigane K., Sato T. J., Tomiyasu K., Arima T., Ino T., Kira H., Sakaguchi K., Oku T., Arimoto Y., Suzuki J., Shimizu H. M., Takeda M., Kaneko K., Hino M., Muto G., Nojiri H.

Meeting Abstracts of the Physical Society of Japan Vol. 66.1.4 ( 0 ) page： 952 2011

22pJA-2 Progress of Polarisation Analysis Neutron Spectrometer Project in J-PARC

Ohoyama K., Iwasa K., Yokoo Y., Itoh S., Hiraka H., Fujita M., Matusura M., Kimura H., Tomiyasu K., Sato T., Sato T. J., Arima T., Ino T., Kira H., Sakaguchi Y., Oku T., Arimoto Y., Suzuki J., Shimizu H. M., Takeda M., Kaneko K., Hino M., Muto G., Nojiri H.

Meeting Abstracts of the Physical Society of Japan Vol. 66.2.4 ( 0 ) page： 995 2011

Filaggrin gene defects and the risk of developing allergic disorders

Osawa R., Akiyama M., Shimizu H.

Allergology International Vol. 60 ( 1 ) page： 1 - 9 2011

Publisher：Allergology International

Filaggrin is a key protein that facilitates terminal differentiation of the epidermis and formation of the skin barrier. Mutations in the gene encoding filaggrin (FLG) have been identified as the cause of ichthyosis vulgaris (IV) and have been shown to be major predisposing factors for atopic dermatitis (AD). Approximately 40 loss-offunction FLG mutations have been identified in patients with ichthyosis vulgaris (IV) and/or atopic dermatitis (AD) in Europe and Asia. Major differences exist in the spectra of FLG mutations observed between different ancestral groups. Notably, prevalent FLG mutations are distinct between European and Asian populations. Many cohort studies on FLG mutations in AD have revealed that approximately 25-50% of AD patients harbour filaggrin mutations as a predisposing factor. In addition, FLG mutations are significantly associated with ADassociated asthma. The risk for developing allergic rhinitis is also significantly higher with a FLG mutation, both with and without accompanying AD. Recent studies have hypothesized that skin barrier defects caused by FLG mutations allows allergens to penetrate the epidermis and to interact with antigen-presenting cells, leading to the development of atopic disorders including asthma. The restoration of skin barrier function seems a feasible and promising strategy for prophylactic treatment of AD patients with FLG mutations. © 2011 Japanese Society of Allergology.

DOI： 10.2332/allergolint.10-RAI-0270

Longitudinal-gradient magnet for time focusing of ultra-cold neutrons

Arimoto Y., Yoshioka T., Shimizu H. M., Mishima K., Ino T., Taketani K., Muto S., Kitaguchi M., Imajo S., Iwashita Y., Yamashita S., Kamiya Y., Yoshimi A., Asahi K., Shima T., Sakai K.

2ND INTERNATIONAL WORKSHOP ON THE PHYSICS OF FUNDAMENTAL SYMMETRIES AND INTERACTIONS (PSI) Vol. 17 page： 20 - 29 2011

Publisher：Physics Procedia

A gradient DC magnet is designed using 3D magnetic field analysis code. This magnet, referred to as a B0 magnet, is one of the key elements of a time-focusing device for ultra-cold neutrons (UCNs) based on a radio frequency gradient flipper - a so-called rebuncher. The magnet generates a guide and a potential field that interacts with the magnetic moment of UCNs and its main body comprises a C-shaped yoke made from iron. A field gradient is generated by a pole arrangement that includes an anisotropic inter-pole, which causes the fringe field to be uniform in the longitudinal direction even when the pole gap distance changes. The designed magnet has the following properties: (1) a maximum B-field of 10 kGauss, decreasing to 2 kGauss at a longitudinal distance of 25 cm, with a gradient of less than 400 Gauss/cm, (2) variations in the fringe field along the y direction is less than 4% over a range of -3 cm≤ y ≤ 3 cm at any z position in the spin-flipping region. Tracking simulations show that the B0 magnet is capable of accepting UCNs in the velocity range 2.3∼3.3 m/s. © 2011 Published by Elsevier B.V.

DOI： 10.1016/j.phpro.2011.06.013

Applications of <sup>3</sup>He neutron spin filters on the small-angle neutron scattering spectrometer SANS-J-II Open Access

Sakaguchi Y., Kira H., Oku T., Shinohara T., Suzuki J., Sakai K., Nakamura M., Aizawa K., Arai M., Noda Y., Koizumi S., Takeda M., Endoh Y., Chang L.J., Arimoto Y., Ino T., Shimizu H.M., Kamiyama T., Ohoyama K., Hiraka H., Tsutsumi K., Yamada K., Kakurai K.

Journal of Physics: Conference Series Vol. 294 ( 1 ) 2011

Publisher：Journal of Physics: Conference Series

A polarized 3He neutron spin filter has been applied to polarization analysis on the small-angle neutron scattering spectrometer SANS-J-II at JRR-3. Measurements were taken on silver behenate, which has several coherent peaks in the small-angle region with a background of spin incoherent hydrogen scattering. Here we demonstrate that the coherent and spin incoherent scattering were successfully separated by the polarization analysis using the 3He spin filter on the instrument. © Published under licence by IOP Publishing Ltd.

DOI： 10.1088/1742-6596/294/1/012017

The novel method of focusing-sans with rotating magnetic sextupole lens and very cold neutrons

Yamada M., Iwashita Y., Ichikawa M., Tongu H., Kanaya T., Kennedy S.J., Yamada N.L., Shimizu H.M., Mishima K., Hino M., Kitaguchi M., Hirota K., Geltenbort P., Guerard B., Manzin G., Andersen K., Lal J., Carpenter J.M., Bleuel M.

IPAC 2010 - 1st International Particle Accelerator Conference page： 427 - 429 2010.12

Publisher：IPAC 2010 - 1st International Particle Accelerator Conference

We are developing a high-resolution small angle neutron scattering (SANS) instrument utilizing pulsed white very cold neutrons (VCN) and modulating magnetic lens for focusing in time of flight (ToF) mode. The magnetic lens adopted new modulation method for focusing pulsed neutron beams over some wavelength range without chromatic aberration; the lens is composed of two concentric permanent magnet arrays in sextupole geometry and the rotation of outer array about fixed inner array provides sinusoidal field gradient modulation. We named this lens as rotating-Permanent Magnet Sextupole lens (rot-PMSx). We have fabricated the prototype of rot-PMSx with the bore diameter ø15 mm and the magnetic length 66 mm. The modulation range of magnetic field strength g inside the bore 1.5×104 T/m ≤ g ≤ 5.9×10 T/m2 and the repetition rate ≤ 25 Hz [1, 2]. We proved the focusing principle with it at PF2-VCN beam line in Institut Laue Langevin (ILL), France [3]. The focused beam image size was kept constant at the same beam size as the source (≈ 3 mm) over wavelength range of 30 Å ≤ λ ≤ 48 Å in focal length of ≈ 1.14 mm while the depth of focus was quite large. These results showed good performance of the rot-PMSx and we moved on to the demonstration of its performance as high-resolution VCN-f-SANS in this compact geometry of just 5 meters. We chose a tri-block copolymer poly(oxyeheylen-oxypropylene-oxyeheylen)(PEO100-PPO 65-PEO100) called Pluronic F127 as a sample, which has been well studied since 1990' [4]. The measureable q range of this system were 0.009 Å-1 ≤ q ≤ 0.3 Å-1 or 0.004 Å-1 q ≤ 0.08 Å-depending on the distances between the sample to detector 100 mm or 465 mm. The results of fitting these data to reasonable models were well consistent with one of same experiments carried out in the past. These results in two experiments are presented together.

Practical Applications of Permanent Magnet Multipoles

Iwashita, Y; Ichikawa, M; Yamada, M; Sugimoto, T; Tongu, H; Fujisawa, H; Masuzawa, M; Tauchi, T; Oku, T; Hirota, K; Shimizu, HM; Shi, C; Zhu, Y

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY Vol. 20 ( 3 ) page： 842 - 845 2010.6

Publisher：IEEE Transactions on Applied Superconductivity

Permanent magnets are superior to electromagnets in generating strong multipole magnetic fields. Their fields are sometimes stronger than those that can be generated by superconducting magnets with the same bore radius, when the number of poles are higher. Three fabricated multipoles including a quadrupole magnet for the ILC (International Linear Collider) final focus doublet, a quadrupole magnets as a spin filter for cold neutrons, and a sextupole magnet for neutron beam focusing are described. © 2006 IEEE.

DOI： 10.1109/TASC.2010.2040604

The Neutron Optics and Physics Beamline at J-PARC

Shimizu Hirohiko

hamon Vol. 20 ( 1 ) page： 25 - 29 2010

Language：Japanese Publisher：The Japanese Society for Neutron Science

<p>A new beamline for a fundamental physics experiment has been built at the BL05 port in the Materials and Life Science Facility (MLF) in Japan Proton Accelerator Research Complex (J-PARC), and the first neutron beam was delivered on December 9th, 2008. This beamline is designed using novel techniques of neutron optics, and it is termed “Neutron Optics and Physics (NOP)." The beam from the moderator is deflected by multi-channel supermirrors and split into three branches for individual experiments. Physics with cold neutrons at the NOP beamline is discussed.</p>

DOI： 10.5611/hamon.20.1_25

13aSK-8 Ultracold neutron generation by means of Dopplershifter in J-PARC/MLF

Imajo S., Fujioka H., Shimizu H. M., Mishima K., Yoshioka T., Kitaguchi M., Hino M., NOP collaboration

Meeting Abstracts of the Physical Society of Japan Vol. 65.2.1 ( 0 ) page： 18 2010

22pBF-4 Development of Dopplershifter for ultracold neutron generation in J-PARC

Imajo S., Fujioka H., Shimizu H., Mishima K., Yoshioka T., Kitaguchi M., Hino M., NOP collaboration

Meeting Abstracts of the Physical Society of Japan Vol. 65.1.1 ( 0 ) page： 142 2010

23pHT-8 Development of Polarization Measurement Devices for Polarized ^3He Gas Neutron Spin Filters

Kira H., Sakaguchi Y., Oku T., Suzuki J., Nakamura M., Arai M., Endo Y., Kakurai K., Arimoto Y., Ino T., Shimizu H., Kamiyama T., Sato H., Sato T., Kamiyama T., Kiyanagi Y., Tsutumi K., Ohoyama K., Hiraka H., Yamada K.

Meeting Abstracts of the Physical Society of Japan Vol. 65.1.4 ( 0 ) page： 1016 2010

23pHT-7 Development of glass cells for polarized ^3He neutron spin filters

Sakaguchi Y., Kira H., Oku T., Suzuki J., Nakamura M., Arai M., Endoh Y., Kakurai K., Takeda M., Wakimoto S., Yamazaki D., Koizumi S., Arimoto Y., Ino T., Shimizu H. M., Kamiyama T., Ohyama K., Hiraka H., Tsutsumi K., Yamada K.

Meeting Abstracts of the Physical Society of Japan Vol. 65.1.4 ( 0 ) page： 1016 2010

23aEF-4 Observation of the phase transition of the water soluble 3-block copolymer (PEO-PPO-PEO) with focusing VCN-SANS

Yamada M., Iwashita Y., Kanaya T., Ichikawa M., Tongu H, Shimizu H. M., Yamada N. L., Mishima K., Hirota K., Hino M., Kitaguchi M., Kennedy Shane J., Guerald Bruno, Manzin Giuliana, Andersen Ken, Geltenbort Peter, Lal Jyotsana, Carpenter John M., Bleuel Markus, NOP collaboration

Meeting Abstracts of the Physical Society of Japan Vol. 65.1.2 ( 0 ) page： 396 2010

Development of modulating permanent magnet sextupole lens for focusing of pulsed cold neutrons

Yamada M., Iwashita Y., Ichikawa M., Tongu H., Fujisawa H., Shimizu H.M., Ino T., Mishima K., Taketani K., Morishima T., Mutou S., Yoshioka T., Oku T., Sakai K., Shinohara T., Suzuki J.I., Hirota K., Otake Y., Sato H., Seki Y., Kawasaki S., Otono H., Komamiya S., Yamashita S., Kamiya Y., Geltenbort P.

Proceedings of the 24th Linear Accelerator Conference, LINAC 2008 page： 263 - 265 2009.12

Publisher：Proceedings of the 24th Linear Accelerator Conference, LINAC 2008

Cold neutron beams can be focused by a strong sextupole magnetic field. A permanent magnet sextupole lens whose focusing strength can be synchronously modulated at the rate of pulsed cold neutron beams is under development. This device should keep the focal point for pulsed neutron beams whose wavelength spreads as a function of time of flight. This kind of device improves the utilization of valuable neutrons and saves experiment time and costs. It will raise linac based small neutron sources as a good counter part to large powerful neutron facilities. Experimental results that were obtained at Institute Laue-Langevin (ILL) are also described.

A small angle neutron scattering (SANS) experiment using very cold neutrons (VCN)

Bleuel, M; Carpenter, JM; Micklich, BJ; Geltenbort, P; Mishima, K; Shimizu, HM; Iwashita, Y; Hirota, K; Hino, M; Kennedy, SJ; Lal, J

PHYSICA B-CONDENSED MATTER Vol. 404 ( 17 ) page： 2629 - 2632 2009.9

Publisher：Physica B: Condensed Matter

This paper describes the results of SANS measurements of small samples using the very cold neutron (VCN) beam of the PF2 instrument at the Institut Laue Langevin (ILL), France. In addition to a classical SANS pinhole collimation, the experiment used a polarizing supermirror as a monochromator and a magnetic sextupole lens to focus the neutron beam in order to gain intensity and avoid any material in the neutron beam besides the sample.

DOI： 10.1016/j.physb.2009.06.048

Simulation study of a pulsed neutron focusing using a pulsed electromagnetic lens coupled with a permanent magnet

Iwashita H., Iwasa H., Hiraga F., Kamiyama T., Kiyanagi Y., Suzuki J., Shinohara T., Oku T., Shimizu H.M.

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Vol. 600 ( 1 ) page： 129 - 131 2009.2

Publisher：Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

A pulsed sextupole electromagnetic lens with suitably controlled time-dependent magnetic field can in principle focus pulsed neutrons at the same focal point over a wide range of wavelength as the lens removes aberrations. However, in fact, it is difficult to focus neutrons over a wide range of wavelength because attenuation of a practical pulsed sextupole electromagnet is faster than an ideal case. We have devised a method of canceling the difference between the practical pulsed sextupole magnetic field and the ideal magnetic field with the use of a permanent sextupole magnet. We performed simulation calculations to investigate the feasibility of this method, and it was shown that focusing wavelength range spread compared with the case using a pulsed magnetic lens only. This result indicates the usefulness of the method. © 2008.

DOI： 10.1016/j.nima.2008.11.105

13aSA-1 Observation Experiment of Gravity Induced Quantum States of Ultra-Cold Neutrons : Results at ILL/PF2 I

Ichikawa Go, Kawasaki Shinsuke, Komamiya Sachio, Kamiya Yoshio, Sanuki Tomoyuki, Shimizu Hirohiko M., Hino Masahiro, Kitaguchi Masaaki

Meeting Abstracts of the Physical Society of Japan Vol. 64.2.1 ( 0 ) page： 27 2009

13aSA-2 Observation Experiment of Gravity Induced Quantum States of Ultra-Cold Neutrons : Results at ILL/PF2 II

Kawasaki Shinsuke, Ichikawa Go, Komamiya Sachio, Kamiya Yoshio, Sanuki Tomoyuki, Shimizu Hirohiko M., Hino Masahiro, Kitaguchi Masaaki

Meeting Abstracts of the Physical Society of Japan Vol. 64.2.1 ( 0 ) page： 27 2009

27aSB-8 Spin flip chopper for J-PARC BL05

Kitaguchi Masaaki, Hino Masahiro, Mishima Kenji, Taketani Kaoru, Yoshioka Tamaki, Muto Suguru, Ino Takashi, Shimizu Hirohiko M., Shima Tatsushi, Sakai Kenji, Seki Yoshichika, Funahashi Haruhiko, Sato Hiromi, Hirota Katsuya, Otake Yoshie, Otono Hidetoshi, Yamashita Satoru, Suzuki Zenmei, Sanuki Tomoyuki, NOP Collaboration

Meeting Abstracts of the Physical Society of Japan Vol. 64.1.1 ( 0 ) page： 25 2009

30aRE-12 Present Status of Experimental Apparatus for Neutron Optics and Physics at J-PARC BL05

Sakai K., Muto S., Ino T., Yoshioka T., Mishima K., Taketani K., Shimizu H., NOP BL Collaboration

Meeting Abstracts of the Physical Society of Japan Vol. 64.1.4 ( 0 ) page： 975 2009

27pYK-8 Development of Polarized ^3He Neutron Spin Filters I

Arimoto Y., Ino T., Shimizu H. M., Kamiyama T., Kira H., Sakaguchi Y., Oku T., Suzuki J., Nakamura M., Arai M., Endo Y., Kakurai K., Ohyama K., Hiraka H., Yamada K.

Meeting Abstracts of the Physical Society of Japan Vol. 64.2.4 ( 0 ) page： 882 2009

27pYK-2 Neutron Optics and Physics (NOP) beamline BL05 at J-PARC/MLF

Ino T., Mishima K., Taketani K., Yoshioka T., Arimoto Y., Muto S., Shimizu H. M., Otono H., Oide H., Kubota T., Yamashita S., Suzuki Z., Sanuki T., Sakai K., Suzuki J., Oku T., Shinohara T., Kitaguchi M., Hino M., Yamada M., Iwashita Y., Shima T., Seki Y., Funahashi H., Hirota K., Otake Y.

Meeting Abstracts of the Physical Society of Japan Vol. 64.2.4 ( 0 ) page： 881 2009

27pYK-10 Development of polarized ^3He neutron spin filters III

Sakaguchi Y., Kira H., Oku T., Suzuki J., Nakamura M., Arai M., Endo Y., Kakurai K., Takeda M., Wakimoto S., Yamazaki D., Koizumi S., Arimoto Y., Ino T., Shimizu H. M., Kamiyama T., Ohyama K., Hiraka H., Yamada K.

Meeting Abstracts of the Physical Society of Japan Vol. 64.2.4 ( 0 ) page： 882 2009

27aSG-6 Project of search for new intermediate-range interactions via neutron scattering at J-PARC BL05 beam line

Shima T., Shimizu H. M., Ino T., Mishima K., Taketani K., Yoshioka M., Mutoh S., Funahashi H., Kitaguchi M., Hino M., Seki Y., Hirota K., Ohtake Y., Sakai K., Suzuki J., Oku T., Shinohara T., Otono H., Yamashita S., Suzuki Y., Sanuki T., NOP collaboration

Meeting Abstracts of the Physical Society of Japan Vol. 64.1.1 ( 0 ) page： 25 2009

27aSG-3 Experiments for focusing pulsed very cold neutron beam by modulated permanent magnet sextupole lens

Yamada M., Iwashita Y., Ichikawa M., Sugimoto T., Tongu H., Fujisawa H., Shimizu H. M., Ino T., Mishima K., Taketani K., Yoshioka T., Mutou S., Oku T., Suzuki J., Hirota K., Seki Y., Kawasaki S., Kamiya Y., Otono H.

Meeting Abstracts of the Physical Society of Japan Vol. 64.1.1 ( 0 ) page： 25 2009

27aSE-14 Observation Experiment of Quantum States of Ultra-Cold Neutrons in the Gravity at ILL

Ichikawa Go, Kawasaki Shinsuke, Komamiya Sachio, Kamiya Yoshio, Sanuki Tomoyuki, Shimizu Hirohiko M., Hino Masahiro, Kitaguchi Masaaki

Meeting Abstracts of the Physical Society of Japan Vol. 64.1.1 ( 0 ) page： 25 2009

J-PARC UCN Taskforce

清水裕彦, 山下了

Summary of the J-PARC UCN Taskforce E-Print ArXiv0907.0515 2009

Fundamental science for neutrons

Shimizu H.

International Journal of Phytoremediation Vol. 19 ( 4 ) page： 43 - 44 2009

Terahertz imaging with a two-dimensional array detector based on superconducting tunnel junctions

Ariyoshi S., Otani C., Dobroiu A., Sato H., Taino T., Matsuo H., Shimizu H.M.

33rd International Conference on Infrared and Millimeter Waves and the 16th International Conference on Terahertz Electronics, 2008, IRMMW-THz 2008 2008.12

Publisher：33rd International Conference on Infrared and Millimeter Waves and the 16th International Conference on Terahertz Electronics, 2008, IRMMW-THz 2008

We demonstrated terahertz imaging using a two-dimensional array detector with 5x5 elements based on superconducting tunnel junctions. Real-time 25-pixel imaging at 0.65 THz was successfully performed. The array detector also allowed the shortening of the total acquisition time for larger images, made up of pixel blocks. ©IEEE.

DOI： 10.1109/ICIMW.2008.4665736

2D elemental analysis approach in focused neutron beam induced prompt gamma-ray analysis at JAEA

Segawa M., Matsue H., Sekiya Y., Yamada S., Shinohara T., Oku T., Sasao H., Suzuki J., Shimizu H.M.

Journal of Radioanalytical and Nuclear Chemistry Vol. 278 ( 3 ) page： 647 - 651 2008.12

Publisher：Journal of Radioanalytical and Nuclear Chemistry

We have constructed a new system which could analyze a position distribution of several elements in a sample with 2 dimensional prompt γ-ray analysis (2D PGA) system using focused neutron beam at JAEA. We aimed that the system could analyze local information in a sample with a good signal γ-ray from interested elements to noise of background γ-ray ratio. As a result, this system could determine the position resolution and spatial resolution within 1 mm. © 2008 Springer Science+Business Media, LLC.

DOI： 10.1007/s10967-008-1402-3

Strong variable permanent multipole magnets

Iwashita, Y; Ichikawa, M; Tajima, Y; Nakamura, S; Kumada, M; Spencer, CM; Tauchi, T; Kuroda, S; Okugi, T; Ino, T; Muto, S; Shimizu, HM

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY Vol. 18 ( 2 ) page： 957 - 960 2008.6

Publisher：IEEE Transactions on Applied Superconductivity

Three super strong permanent multipole magnets have been made: a fixed strength quadrupole, a variable quadrupole and a variable sextupole. The inner and outer diameters of the first 100 mm-length quadrupole are 14 mm and 100 mm, respectively. This fixed strength quad has an integrated gradient of 28.5 T; where the gradient at the center is more than 2.9 T/cm. The second, variable, quadrupole has an integrated strength of 38 T with 15 mm inner diameter and 230 mm length at the maximum: there are sixteen positions in its variable strength with about a 2 T even step width. The sextupole model is intended to change its strength at 25 Hz. One application of a variable quadrupole magnet is a final doublet quadrupole for an e+e- linear collider. Permanent magnet sextupoles are useful for focusing of cold neutrons, which are a very useful probe for material research. Strong octupoles for beam tail folding in the final focus beamline of a linear collider will also be possible with permanent magnets. These high order multipoles made from permanent magnets can achieve higher strengths, for a given bore radius, than superconducting ones. Design works are presented starting from brief review. © 2008 IEEE.

DOI： 10.1109/TASC.2008.921302

Development of terahertz-wave detector array based on superconducting tunnel junctions and its imaging applications

ARIYOSHI Seiichiro, OTANI Chiko, DOBROIU Adrian, SATO Hiromi, TAINO Tohru, MATSUO Hiroshi, SHIMIZU Hirohiko

Vol. 78 page： 62 2008.5

Application of a neutron-polarizing device based on a quadrupole magnet to a focusing SANS instrument with a magnetic neutron lens

Oku, T; Shinohara, T; Kikuchi, T; Oba, Y; Iwase, H; Koizumi, S; Suzuki, J; Shimizu, HM

MEASUREMENT SCIENCE AND TECHNOLOGY Vol. 19 ( 3 ) 2008.3

Publisher：Measurement Science and Technology

A magnetic neutron lens based on a sextupole magnet is considered an ideal neutron-focusing device for focusing-geometry small-angle neutron scattering (FSANS) instruments using polarized neutrons. However, the magnetic neutron lens functions both as focusing and defocusing lens for positive and negative polarity neutrons, respectively. Negative polarity neutrons are defocused by the lens and spread over the detector of the instrument, resulting in an increase of the background level. Therefore, a neutron-polarizing device with a very high polarizing efficiency P ≳ 0.99 is required to be employed together with the magnetic neutron lens. A neutron-polarizing device based on a quadrupole magnet has a very high polarizing efficiency P ≳ 0.99, which is sufficient for the application to the FSANS instrument. In this study, we installed the quadrupole magnet in the FSANS instrument SANS-J-II and investigated its performance with respect to the conventional magnetic super-mirror polarizers of the FSANS instrument. © 2008 IOP Publishing Ltd.

DOI： 10.1088/0957-0233/19/3/034011

Variable permanent magnet sextupole lens for focusing of pulsed cold neutrons

Iwashita, Y; Tajima, Y; Ichikawa, M; Nakamura, S; Ino, T; Muto, S; Shimizu, HM

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT Vol. 586 ( 1 ) page： 73 - 76 2008.2

Publisher：Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

A Variable Permanent Magnet Sextupole (VPMS) lens that can focus pulsed slow neutrons is under development. It is based on the extended Halbach configuration to generate stronger magnetic field. In order to adjust the strength, the magnet is divided into two nested rings, where the inner ring is fixed and the outer ring can be rotated. This device will focus cold neutrons with wavelength of a few to several Angstroms at about 10 m focal length. We fabricated a half-scale model to measure the strength and the torque as functions of the rotor angle. Because the torque is measured as high as more than 30 N m, a mechanism to rotate the rotor is carefully designed. After installation of such a mechanism, a motor will drive the rotor and the temperature rise caused from eddy current loss will be measured. Detailed development of the system will be presented. © 2007 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2007.11.058

The JEM-EUSO project: Observing extremely high energy cosmic rays and neutrinos from the international space station

Ebisuzaki, T; Uehara, Y; Ohmori, H; Kawai, K; Kawasaki, Y; Sato, M; Takizawa, Y; Bertaina, ME; Kajino, F; Sawabe, T; Inoue, K; Sasaki, A; Sakata, M; Yamamoto, Y; Nagano, M; Inoue, N; Shibata, T; Sakaki, N; Uchihori, Y; Takahashi, Y; Shimizu, H; Arai, Y; Kurihara, Y; Fujimoto, H; Yoshida, S; Mizumoto, Y; Inoue, S; Asano, K; Sugiyama, T; Watanabe, J; Ikeda, H; Suzuki, M; Imamura, T; Yano, H; Murakami, T; Yonetoku, D; Itow, Y; Taguchi, M; Nagata, M; Nagataki, S; Abe, S; Tajima, T; Adams, JH; Mitchell, S; Christl, MJ; Watts, J; English, A; Takahashi, Y; Pitalo, K; Hadaway, J; Geary, J; Readon, P; Crawford, H; Pennypacker, C; Arisaka, K; Cline, D; Gorodetsky, P; Salin, P; Patzark, T; Maurissen, A; Valentin, M

NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS Vol. 175 ( SUPPL.: COMPLETE ) page： 237 - 240 2008.1

Development of MSGC for neutron application with micron-order blasting technology

Fujita Kaoru, Takahashi Hiroyuki, Ino Takashi, Shimizu Hirohiko, Kishimoto Shunji, Furusaka Michihiro, Oku Takayuki, Suzuki Jun-ichi

Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan Vol. 2008f ( 0 ) page： 131 - 131 2008

Neutron Optics and Physics Beamline (J-PARC BL05)

Shimizu Hirohiko M.

hamon Vol. 18 ( 3 ) page： 151 - 154 2008

Publisher：The Japanese Society for Neutron Science

A pulsed cold neutron beam for the study of neutron optics and fundamental physics (NOP) is under construction as the BL05 of the spallation neutron source of the J-PARC. The NOP beamline has three beam branches, which provide the highly-polarized beam, high intensity beam and low divergence beam for the neutron decay experiment, the neutron scattering experiment and the neutron interferometry experiment, respectively. We overview the physics to be studied at the NOP beamline at its beginning stage.

DOI： 10.5611/hamon.18.151

Terahertz Imaging with a Two-dimensional Array Detector Based on Superconducting Tunnel Junctions

Ariyoshi, S; Otani, C; Dobroiu, A; Sato, H; Taino, T; Matsuo, H; Shimizu, HM

2008 33RD INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER AND TERAHERTZ WAVES, VOLS 1 AND 2 page： 618 - 618 2008

23aSJ-10 Observation of quantum states of Ultra-Cold Neutrons in the Gravitational Field : Estimation of the Performance of the Detector by Cold Neutrons

Ichikawa Go, Kawasaki Shinsuke, Komamiya Sachio, Kamiya Yoshio, Sanuki Tomoyuki, Shimizu Hirohiko M., Hino Masahiro, Kitaguchi Masaaki

Meeting Abstracts of the Physical Society of Japan Vol. 63.2.1 ( 0 ) page： 22 2008

26pZL-2 Development of Modulating Permanent Magnet Sextupole for Focusing of pulsed cold neutrons

Yamada Masako, Ichikawa Masahiro, Iwashita Yoshihisa, Tajima Yujiro, Tongu Hiromu, Ino Takashi, Shimizu Hirohiko M, Muto Suguru

Meeting Abstracts of the Physical Society of Japan Vol. 63.1.1 ( 0 ) page： 131 2008

24pWG-11 Development and application of multiple sextupole magnet for focusing of polychromatic neutron beam

Suzuki Jun-ichi, Oku Takayuki, Shinohara Takenao, Ohba Yojiro, Kikuchi Takayuki, Shimizu Hirohiko M., Pynn Roger

Meeting Abstracts of the Physical Society of Japan Vol. 63.1.4 ( 0 ) page： 931 2008

24pWG-10 Developments for 2-3 Dimensional Prompt Gamma-ray Analysis System at JAEA

Segawa M., Matsue H., Yamada S., Shinohara T., Oku T., Sasao H., Suzuki J., Shimizu H.

Meeting Abstracts of the Physical Society of Japan Vol. 63.1.4 ( 0 ) page： 931 2008

23pSM-6 Development of Modulating Permanent Magnet Sextupole for Focusing of pulsed cold neutrons II

Yamada M., Iwashita Y., Ichikawa M., Sugimoto T., Tongu H., Fujisawa H., Shimizu H.M., Ino T., Mishima K., Taketani K., Yoshioka T., Mutou S., Morishima T., Oku T., Suzuki J., Shinohara T., Sakai K., Sato H., Hirota K., Otake Y., Seki Y., Kawasaki S., Komamiya S., Kamiya Y., Otono H., Yamashita S.

Meeting Abstracts of the Physical Society of Japan Vol. 63.2.1 ( 0 ) page： 24 2008

23pSM-5 Development of Very Cold Neutron Interferometer

Seki Yoshichika

Meeting Abstracts of the Physical Society of Japan Vol. 63.2.1 ( 0 ) page： 24 2008

23pSM-2 Neutron interferometer at J-PARC

Kitaguchi Masaaki, Hino Masahiro, Seki Yoshichika, Funahashi Haruhiko, Mishima Kenji, Ino Takashi, Taketani Kaoru, Yoshioka Tamaki, Muto Suguru, Morishima Takahiro, Shimizu Hirohiko M., Shima Tatsushi, Sato Hiromi, Hirota Katsuya, Otake Yoshie, Sakai Kenji, NOP Collaboration

Meeting Abstracts of the Physical Society of Japan Vol. 63.2.1 ( 0 ) page： 23 2008

23aSJ-9 Observation of quantum states of Ultra-Cold Neutrons in the Gravitational Field : Report on a performance test of pixel detector for Ultra-Cold Neutrons at ILL

Kawasaki Shinsuke, Ichikawa Go, Komamiya Sachio, Kamiya Yoshio, Sanuki Tomoyuki, Shimizu Hirohiko M., Hino Masahiro, Kitaguchi Masaaki

Meeting Abstracts of the Physical Society of Japan Vol. 63.2.1 ( 0 ) page： 22 2008

Research and Development of Neutron Detectors, Neutron Optical Devices and Data Acquisition at J-PARC

SOYAMA Kazuhiko, SHIMIZU Hirohiko, OTOMO Toshiya

Nihon Kessho Gakkaishi Vol. 50 ( 1 ) page： 66 - 71 2008

Language：Japanese Publisher：The Crystallographic Society of Japan

Advanced neutron instrumentations are key to accelerated progress of high intense pulsed neutron research at J-PARC, SNS and ISIS-TS2. Current status of development of scintillating and gaseous neutron detectors, application of neutron reflective and magnetic optics, and soft ware development for large amount data acquisition at J-PARC, are described.

DOI： 10.5940/jcrsj.50.66

Development of permanent mangnet sextupole lens for focusing of cold neutrons

Yamada M., Iwashita Y., Ichikawa M., Tongu H., Shimizu H., Ino T., Muto S.

EPAC 2008 - Contributions to the Proceedings page： 2392 - 2394 2008

Publisher：EPAC 2008 - Contributions to the Proceedings

A modulating permanent magnet sextupole lens that can focus pulsed cold neutrons is under development. The magnet is based on the extended Halbach configuration to generate stronger magnetic field. In order to adjust the strength, the magnet is divided into two co-axial nested rings, where the inner ring is fixed and the outer ring can be rotated. Synchronizing the period of the modulation with that of pulsed neutron beam suppress the chromatic aberration. We have fabricated a half scale model as a prototype and studied the strength, the temperature rise caused by eddy current. We have reduced the temperature rise about half of the former model by making the poles laminated structure. We are considering further improvement of the temperature rise and the system of rotating the outer ring with energy loss minimum. We are also measuring the very-cold neutrons focused by the half scale model.

Terahertz electromagnetic-wave detector using Nb-based superconducting tunnel junction on LiNbO<sub>3</sub> substrate absorber

Taino, T; Ishii, H; Yoshimura, S; Otani, C; Ariyoshi, S; Myoren, H; Kawase, K; Shibuya, T; Sato, H; Shimizu, HM; Takada, S

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS Vol. 463 ( SUPPL. ) page： 1119 - 1122 2007.10

Publisher：Physica C: Superconductivity and its Applications

We have been developing terahertz (THz) wave detectors using superconducting tunnel junctions (STJs). The STJs consist of the Nb/Al/AlOx/Al/Nb structure. We fabricated THz-wave detectors on LiNbO3 substrates that have a high absorption coefficient for the frequency range of 1012 Hz. Two kinds of signals were detected when the THz-wave was irradiated from the substrate side. One was an indirect signal related to the generation of phonons. The other was a signal that corresponds to directly generated quasi-particles in the Nb electrode of the STJ. The pulse height of the indirect signal was larger than that of the latter signal. To enlarge the detector area, we designed a STJ that has different areas of the base electrode and top electrode. In this paper, the characteristics of the THz-wave detector area will be discussed. © 2007 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.physc.2007.03.500

Development of neutron interferometer with wide-gapped "bSE"s for precision measurements

Seki Y., Kitaguchi M., Funahashi H., Taketani K., Hino M., Otake Y., Shimizu H.

AIP Conference Proceedings Vol. 915 page： 202 - 205 2007.9

Publisher：AIP Conference Proceedings

We are developing large-dimensional cold-neutron interferometers with multilayer mirrors in order to investigate small interactions. In particular Jamin type interferometers composed of wide-gapped "BSE"s, which divide the beam completely, can realize the precision measurement of topological Aharonov-Casher effect. We have made a prototype with 200 μm gapped BSEs and confirmed the spatial separation of its two paths at monochromatic cold-neutron beamline MINE2 on JRR-3M reactor in JAEA. © 2007 American Institute of Physics.

DOI： 10.1063/1.2750763

Spin-selective neutron optics for neutron fundamental physics

Shimizu H.

AIP Conference Proceedings Vol. 915 page： 197 - 201 2007.9

Development of micro pattern gas detectors in the University of Tokyo

FUJITA Kaoru, TAKAHASHI Hiroyuki, NIKO Hisako, TAKADA Yuka, INO Takashi, SHIMIZU Hirohiko M, KISHIMOTO Shunji, OKU Takayuki, SUZUKI Jun-ichi, FURUSAKA Michihiro, KANAZAWA Masakazu

Vol. 2007 ( 1 ) page： 1 - 4 2007.9

CS-7-9 Single Photon Detector using Superconducting Tunnel Junction at 1.5-micron Waveband

Shiki Shigetomo, Sato Hiromi, Shimizu Hirohiko M.

Proceedings of the IEICE General Conference Vol. 2007 ( 2 ) page： "S - 31"-"S-32" 2007.3

X-Ray Detection Using Superconducting Tunnel Junction Shaped Normal-Distribution-Function

TAINO Tohru, NISHIHARA Tomohiro, HOSHINO Koichi, MYOREN Hiroaki, SATO Hiromi, SHIMIZU Hirohiko M., TAKADA Susumu

IEICE transactions on electronics Vol. 90 ( 3 ) page： 566 - 569 2007.3

Language：English Publisher：The Institute of Electronics, Information and Communication Engineers

A normal-distribution-function-shaped superconducting tunnel junction (NDF-STJ) which consists of Nb/Al-AlO_x/Al/Nb has been fabricated as an X-ray detector. Current-voltage characteristics were measured at 0.4K using three kinds of STJs, which have the dispersion parameters σ of 0.25, 0.45 and 0.75. These STJs showed very low subgap leakage current of about 5nA. By irradiating with 5.9keV X-rays, we obtained the spectrum of these NDF-STJs. They showed good energy resolution with small magnetic fields of below 3mT, which is about one-tenth of those for conventional-shaped STJs.

Neutron diffraction under 30T pulsed magnetic fields

Ohoyama, K; Katoh, N; Nojiri, H; Matsuda, YH; Hiraka, H; Ikeda, K; Shimizu, HM

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS Vol. 310 ( 2 ) page： E974 - E976 2007.3

Publisher：Journal of Magnetism and Magnetic Materials

We develop techniques for neutron diffraction experiments under pulsed high magnetic fields. 30 T pulsed magnetic fields were successfully generated on a neutron spectrometer installed at a reactor. Neutron beam focusing devices and high efficiency neutron detecting system have also been developed. © 2006 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.jmmm.2006.10.958

Simulation of focusing using a pulsed sextupole electromagnet and comparison with experimental results

Iwashita Hidenori, Iwasa Hirokatsu, Hiraga Hujio, Kamiyama Takashi, Kiyanagi Yoshiaki, Suzuki Jyunichi, Shinohara Takenao, Oku Takayuki, Simizu Hirohiko

Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan Vol. 2007f ( 0 ) page： 182 - 182 2007

Characteristics of MS-tube as a position sensitive neutron detector

Fujita Kaoru, Takahashi Hiroyuki, Niko Hisako, Nishi Kosuke, Takada Yuka, Furusaka Michihiro, Ino Takashi, Shimizu Hirohiko, Kishimoto Shunji, Oku Takayuki, Suzuki Jun-ichi, Toyokawa Hidenori, Kanazawa Masakazu

Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan Vol. 2007s ( 0 ) page： 72 - 72 2007

Evaluation of position resolution with charge division method by cathode patterning in MSGC

Fujita Kaoru, Takahashi Hiroyuki, Niko Hisako, Takada Yuka, Ino Takashi, Shimizu Hirohiko, Kishimoto Shunji, Furusaka Michihiro, Kanazawa Masakazu

Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan Vol. 2007f ( 0 ) page： 106 - 106 2007

Development of neutron interferometer with wide-gapped "BSE"s for precision measurements

Seki, Y; Kitaguchi, M; Funahashi, H; Taketani, K; Hino, M; Otake, Y; Shimizu, HM

PROCEEDINGS OF THE 17TH INTERNATIONAL SPIN PHYSICS SYMPOSIUM Vol. 915 page： 202 - + 2007

19aXB-9 Development of Curved Supermirrors for Neutron Optical devices

Ikeda K., Hirota K., Sato H., Ohmori H., Shimizu H. M., Furusaka M.

Meeting Abstracts of the Physical Society of Japan Vol. 62.1.4 ( 0 ) page： 949 2007

19aXB-8 Focusing of pulsed polychromatic neutron beam by a compound sextupole magnet

Suzuki J., Oku T., Shinohara T., Shimizu H. M., Pynn Roger

Meeting Abstracts of the Physical Society of Japan Vol. 62.1.4 ( 0 ) page： 949 2007

19aXB-7 Neutron beam focusing by a pulsed sextupole electromagnet

Shinohara T., Iwashita H., Suzuki J., Oku T., Kamiyama T., Iwasa H., Hiraga F., Kiyanagi Y., Sato K., Shimizu H. M.

Meeting Abstracts of the Physical Society of Japan Vol. 62.1.4 ( 0 ) page： 949 2007

19aXB-6 Development of magnetic lenses for neutron beam focus and polarization (2)

Ino T., Iwashita Y., Oku T., Kaneko N., Kawai M., Kobayashi Y., Sagehashi H., Shinohara T., Shimizu H. M., Suzuki J., Tahara T., Hirota K., Muto S., Morishima T.

Meeting Abstracts of the Physical Society of Japan Vol. 62.1.4 ( 0 ) page： 949 2007

19aXB-5 Development of magnetic lenses for neutron beam focus and polarization (1)

Ino T., Iwashita Y., Oku T., Kaneko N., Kawai M., Kobayashi Y., Sagehashi H., Shinohara T., Shimizu H. M., Suzuki J., Tahara T., Hirota K., Muto S., Morishima T.

Meeting Abstracts of the Physical Society of Japan Vol. 62.1.4 ( 0 ) page： 948 2007

21aTC-1 Development of magnetic lenses for neutron beam focus and polarization (3)

Muto S., Ino T., Iwashita Y., Oku T., Kaneko N., Kawai M., Kobayashi Y., Sagehashi H., Shinohara T., Shimizu H.M., Suzuki J., Tahara T., Hirota K., Morishima T.

Meeting Abstracts of the Physical Society of Japan Vol. 62.2.4 ( 0 ) page： 970 2007

24aZG-2 Mesurement of magnetic field in adjustable Parmanent Magnet Multipole

Ichikawa Masahiro, Iwashita Yoshihisa, Tajima Yujiro, Tongu Hiromu, Ino Takashi, Shimizu Hirohiko M, Muto Suguru

Meeting Abstracts of the Physical Society of Japan Vol. 62.2.1 ( 0 ) page： 133 2007

21pRE-13 Measurement of stopping power variation of thin metallic target for α-ray in strong magnetic field

Itoh Hiroyuki, Mitsuda Chikaori, Morita Akio, Ichikawa Masahiro, Tajima Yujiro, Shimizu Hirohiko, Yoshimura Koji, Tosaki Mitsuo, Iwashita Yoshihisa

Meeting Abstracts of the Physical Society of Japan Vol. 62.2.2 ( 0 ) page： 156 2007

21aTC-3 Application of a neutron polarizing device based on a quadrupole magnet to a focusing SANS instrument with a magnetic neutron lens.

Oku T., Shinohara T., Kikuchi T., Oba Y., Iwase H., Koizumi S., Suzuki J., Shimizu H.M.

Meeting Abstracts of the Physical Society of Japan Vol. 62.2.4 ( 0 ) page： 970 2007

21aTC-2 Development of neutron Fresnel lens

Ino T., Adachi T., Shinohara T., Shimizu H.M., Hirota K., Muto S.

Meeting Abstracts of the Physical Society of Japan Vol. 62.2.4 ( 0 ) page： 970 2007

Spin-selective neutron optics for neutron fundamental physics

Shimizu H. M.

PROCEEDINGS OF THE 17TH INTERNATIONAL SPIN PHYSICS SYMPOSIUM Vol. 915 page： 197 - 201 2007

Study on the relation between abnormal brain protein aggregation and neuopathy-abnormal aggregation of 3-repeat-tau by oxidation stress is related to pathogenesis of Alzheimer's disease

Naito S., Ikeda S., Shimizu H., Mochizuki H., Yasuda T., Mizuno Y., Furusaka M., Suzuki J., Fujiwara S., Wada K.

Polymer Preprints, Japan Vol. 55 ( 2 ) 2006.12

THz imaging with a linear array detector based on superconducting tunnel junctions

Ariyoshi S., Otani C., Dobroiu A., Matsuo H., Sato H., Taino T., Kawase K., Shimizu H.M.

IRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics 2006.12

Publisher：IRMMW-THz 2006 - 31st International Conference on Infrared and Millimeter Waves and 14th International Conference on Terahertz Electronics

We demonstrated terahertz imaging using a linear array detector with five elements based on superconducting tunnel junctions (STJs). Nondestructive imaging at 0.66 THz was successfully performed for a test metallic pattern and an integrated-circuit card using the STJ linear array, which shortened the total acquisition time. ©2006 IEEE.

DOI： 10.1109/ICIMW.2006.368603

Applications of neutron refractive optical devices

Shimizu H.

Physica B: Condensed Matter Vol. 385-386 page： 989 - 994 2006.11

Publisher：Physica B: Condensed Matter

Refractive optics has relatively large effective apertures compared with reflective optics and they are suitable for two-dimensional beam focusing. There are two types of refractive optics, which are compound refractive optics and magnetic optics. Both of them are applied to extend the accessible q-range in small-angle scattering of cold neutron. We discuss possibilities to apply magnetic optics at pulsed neutron sources. We also discuss the possibility to obtain an extremely high neutron polarization using the spin-selectivity of magnetic optics. © 2006 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.physb.2006.05.318

Simulation study of neutron focusing effect on a pulsed sextupole magnetic lens using PHITS code

Mitsutake, I; Kiyanagi, Y; Kamiyama, T; Nitta, K; Suzuki, J; Oku, T; Shimizu, HM

PHYSICA B-CONDENSED MATTER Vol. 385-86 page： 1229 - 1231 2006.11

Publisher：Physica B: Condensed Matter

We have performed various simulation calculations for a pulsed sextupole magnetic lens to look for the best condition of focusing experiments, assuming conditions of the pulse magnetic lens now under construction. Here, we placed a slit between the pulsed neutron moderator and the neutron lens, in order to see the focusing effect clearly. For the simulation, we used PHITS code to know influences of the position of the slit on the intensity of focused neutron beam, the focal point, and the broadening of the focal point. Increase of the distance of the slit from the source resulted in the decrease of the peak intensity of neutron beam at the focal point. Full-width at half-maximum of the neutron distribution along the incident beam direction around the focal point, broadened with increasing the distance, and the focal distance also became longer. The intensity ratios defined by (intensity with magnetic field)/(intensity without magnetic field) also increased with decreasing the distance. Therefore, it is better to set a slit near the moderator. © 2006.

DOI： 10.1016/j.physb.2006.05.417

Small-angle characterization of multimetric variants related to Parkinson's disease of ubiquitin carboxyl-terminal hydrolase L1 in water by small-angle neutron scattering

Naito S., Mochizuki H., Yasuda T., Mizuno Y., Furusaka M., Ikeda S., Shimizu H.M., Adachi T., Suzuki J., Fujiwara S., Okada Y., Mshikawa K., Aoki S., Wada K.

Polymer Preprints, Japan Vol. 55 ( 1 ) 2006.10

Publisher：Polymer Preprints, Japan

UCH-L1 is a neuro-specific multiple functional enzyme. To examine the relationship between PD and the configuration of UCH-L1 variants [wild-type, I93M (linked to familial PD), and SI8Y (linked to reduced risk of PD)], we examined their structures in dueterized water directly using small-angle neutron scattering. We demonstrate that these were all self-assembled dimers. The wild-type was a rotating ellipsoidal dimer although the crystal structure predicted from the UCH-L3 was globular. The globular form of the monomeric component deformed by the I93M mutation. Conversely, the SI8Y polymorphism promoted the globularity. The morphological structures of UCH-L1 variants and PD exhibit good pathological correlation.

Design study of superconducting sextupole magnet using HTS coated conductor for neutron-focusing device

Tosaka, T; Koyanagi, K; Ono, M; Kuriyama, T; Watanabe, I; Tsuchiya, K; Suzuki, J; Adachi, T; Shimizu, HM

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS Vol. 445 ( 1-2 ) page： 1095 - 1098 2006.10

Publisher：Physica C: Superconductivity and its Applications

We performed a design study of sextupole magnet using high temperature superconducting (HTS) wires. The sextupole magnet is used as a focusing lens for neutron-focusing devices. A neutron-focusing device is desired to have a large aperture and a high magnetic field gradient of G, where G = 2B/r2, B is the magnetic field and r is a distance from the sextupole magnet axis. Superconducting magnets offer promising prospects to meet the demands of a neutron-focusing device. Recently NbTi coils of low temperature superconducting (LTS) have been developed for a sextupole magnet with a 46.8 mm aperture. The maximum magnetic field gradient G of this magnet is 9480 T/m2 at 4.2 K and 12,800 T/m2at 1.8 K. On the other hand, rapid progress on second generation HTS wire has been made in increasing the performance of critical current and in demonstrating a long length. The second generation HTS wire is referred to as coated conductor. It consists of tape-shaped base upon which a thin coating of superconductor, usually YBCO, is deposited or grown. This paper describes a design study of sextupole magnet using coated conductors. © 2006.

DOI： 10.1016/j.physc.2006.05.043

Performance of a multi-anode photomultiplier employing a weak electrostatic focusing system (Hamamatsu R8900 series)

Kawasaki, Y; Bertaina, ME; Sakaki, N; Shimizu, HM; Inoue, N; Hasegawa, S; Ohtsu, I; Adachi, T; Ebisuzaki, T; Hirota, K; Ikeda, K; Kajino, F; Morishima, T; Nagano, M; Sato, M; Sawabe, T; Shibata, T; Shinohara, T; Takeda, M; Takizawa, Y; Uchihori, Y; Wada, Y

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT Vol. 564 ( 1 ) page： 378 - 394 2006.8

Publisher：Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

We have developed and tested a new type of multi-anode photomultiplier: Hamamatsu R8900-03 series. The main feature of the R8900-03 series is a highly sensitive surface: ∼ 83 % of the physical area. In this paper we report on the results of measurements we performed to check several parameters of this new type of photomultiplier. R8900-03 photomultipliers are devices suitable for experiments where large collection area and uniform detection efficiency are essential characteristics. © 2006 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2006.03.010

Low Energy Neutron Optics

SHIMIZU Hirohiko M.

Journal of the Particle Accelerator Society of Japan Vol. 3 ( 2 ) page： 128 - 136 2006.7

Language：Japanese Publisher：Particle Accelerator Society of Japan

<p>Neutron is a unique probe to study materials according to its low capability to excite chemical bondings with a relatively high sensitivity to light elements. However, its low luminosity has limited the application fields. The recent innovations in neutron optics have been activating enhanced analyzing capabilities of neutron scattering experiments. We describe the current status of advanced neutron optics and possible extensions of their applications.</p>

DOI： 10.50868/pasj.3.2_128

Nb<sub>3</sub>Sn sextupole magnet for neutron beam focusing

Okamoto, K; Nakamura, K; Seki, Y; Ohno, M; Takao, T; Mitsuda, C; Ohuchi, N; Shintomi, T; Tsuchiya, K; Adachi, T; Shimizu, H; Oku, T; Suzuki, J; Kimura, S; Hanai, S; Urata, M; Watanabe, I

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY Vol. 16 ( 2 ) page： 362 - 365 2006.6

Publisher：IEEE Transactions on Applied Superconductivity

In order to obtain a high-intensity neutron beam for neutron scattering experiments, strong sextupole magnets with large apertures are useful as a focusing element. We have started the development of a Nb3Sn sextupole magnet for this purpose. The design field strength of the sextupole is 12780 T/m2 and the aperture of the coil is 46 mm in diameter. As a first step of the development, three model coils have been made in order to learn about Nb3Sn technology and to evaluate the fabrication techniques. Single-pole tests of these coils have been performed to assess the conductor stability and training behavior of the Nb3Sn coils. This paper describes the design of the magnet, the fabrication of the model coils and the results of single-pole tests. © 2006 IEEE.

DOI： 10.1109/TASC.2006.873329

Terahertz imaging with a direct detector based on superconducting tunnel junctions

Ariyoshi, S; Otani, C; Dobroiu, A; Sato, H; Kawase, K; Shimizu, HM; Taino, T; Matsuo, H

APPLIED PHYSICS LETTERS Vol. 88 ( 20 ) 2006.5

Publisher：Applied Physics Letters

We demonstrated terahertz imaging using a direct detector based on niobium superconducting tunnel junctions (STJs). The detector is composed of linearly distributed junctions placed on a superconducting microstrip line and is integrated on two wings of a log-periodic antenna. We succeeded nondestructive imaging for an integrated-circuit card and dry material using the detector around its sensitivity peak (∼0.66 THz). The dynamic range was measured to be higher than 4× 107 (76 dB). Thus, the STJ detector is applicable to high-sensitivity and high-speed terahertz imaging for various nondestructive inspection applications. © 2006 American Institute of Physics.

DOI： 10.1063/1.2204842

A broadband terahertz detector using a superconducting tunnel junction

Taino, T; Nakano, R; Yoshimura, S; Myoren, H; Takada, S; Otani, C; Ariyoshi, S; Shibuya, T; Kawase, K; Sato, H; Shimizu, HM

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT Vol. 559 ( 2 ) page： 751 - 753 2006.4

Publisher：Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

We have proposed and demonstrated a new broadband terahertz (THz) wave detector using a superconducting tunnel junction (STJ) fabricated on LiNbO3, LiTaO3, and sapphire substrates. These substrates have relatively high absorption efficiency for THz waves, and we have expected that incident THz waves from substrate side are absorbed and that generate many THz phonons which break Cooper pairs in the base superconductor electrode of the STJ. Using a frequency-tunable THz pulse source in 1-2 THz, we have confirmed that the current signal corresponding to the THz input was observed. In addition, we found two current components with different timescales for the first time. We interpret that the slow component corresponds to phonons absorbed with the substrate and that the fast one corresponds to the directly absorbed photons with the superconductor electrode of the STJs. © 2006 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2005.12.207

Detection of α particles with a superconducting series-junction detector

Kurakado, M; Kirk, EC; Sato, H; Jerjen, I; Shiki, S; Shimizu, HM; Zehnder, A; Taniguchi, K

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT Vol. 559 ( 2 ) page： 480 - 482 2006.4

Publisher：Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Alpha particles were measured with a superconducting series-junction detector. The effective area and thickness of the detector are given by a circle of 0.5 mm in diameter and 500 μm Al2O3, respectively. The risetime of the charge-sensitive preamplifiers, i.e. charge collection time of the detector, was about 5 μs. An energy resolution of 0.35% was obtained for 5.5 MeV α particles. © 2006 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2005.12.080

Development of a low energy particle detector using a superconducting transition edge sensor

Ohno, M; Sato, H; Ikeda, T; Shimizu, HM

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT Vol. 559 ( 2 ) page： 573 - 575 2006.4

Publisher：Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

It is possible for a superconductive transition edge sensor (TES) to detect directly the low energy proton generated in the neutron beta decay. The precision measurement of the proton spectrum is important to test the prediction of the Standard Model of electroweak interaction. Therefore, we are developing a TES microcalorimeter with a large effective area for a proton detector. Our first TES device consists of four-pixels using a Ti/Au bilayer. All pixels are parallel biased and X-rays from a 55Fe source are detected successfully. © 2005 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2005.12.058

Refraction as a means of encoding wavelength for neutron reflectometry

Cubitt, R; Shimizu, HM; Ikeda, K; Torikai, N

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT Vol. 558 ( 2 ) page： 547 - 550 2006.3

Publisher：Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Neutron reflectometry is a well-established technique used to analyze the structure of interfaces as a function of depth normal to the surface. On a continuous source of neutrons, such as a reactor, the measurement can be done at a fixed incident angle and a white beam with the neutron wavelength encoded by the use of choppers to measure the time of flight. Although providing a certain flexibility in wavelength resolution, choppers have low transmission. This paper explores the possibility of using refraction to encode neutron wavelength opening the possibility of reactor sources to use almost the full-time-averaged neutron flux available and hence, increase the performance of neutron reflectometers by orders of magnitude. © 2005 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2005.12.045

Characterization of multimetric variants of ubiquitin carboxyl-terminal hydrolase L1 in water by small-angle neutron scattering

Naito, S; Mochizuki, H; Yasuda, T; Mizuno, Y; Furusaka, M; Ikeda, S; Adachi, T; Shimizu, HM; Suzuki, J; Fujiwara, S; Okada, T; Nishikawa, K; Aoki, S; Wada, K

BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS Vol. 339 ( 2 ) page： 717 - 725 2006.1

Publisher：Biochemical and Biophysical Research Communications

Here, we illustrated that the morphological structures of ubiquitin carboxyl-terminal hydrolase L1 (UCH-L1) variants and Parkinson's disease (PD) exhibit good pathological correlation by a small-angle neutron scattering (SANS). UCH-L1 is a neuro-specific multiple functional enzyme, deubiquitinating, ubiquityl ligase, and also involved in stabilization of mono-ubiquitin. To examine the relationship between multiple functions of UCH-L1 and the configuration of its variants [wild-type, I93M (linked to familial Parkinson's disease), and S18Y (linked to reduced risk of Parkinson's disease)], in this report, we proposed that these were all self-assembled dimers by an application of a rotating ellipsoidal model; the configurations of these dimers were quite different. The wild-type was a rotating ellipsoidal. The globular form of the monomeric component deformed by the I93M mutation. Conversely, the S18Y polymorphism promoted the globularity. Thus, the multiple functional balance is closely linked to the intermolecular interactions between the UCH-L1 monomer and the final dimeric configuration. © 2005 Elsevier Inc. All rights reserved.

DOI： 10.1016/j.bbrc.2005.11.066

development of gadorinium system thin scintillator(3)

YAMAGUCHI Toru, HARUNA Jun, KANEKO Junichi, SUSA Kenzou, MIURA Seiji, YAGI Yasuhiro, KAWAMURA Souhan, OKU Takayuki, FUJITA Fumiyuki, HOMMA Akira, ISHIBASHI Hiroyuki, SAWAMURA Teruko, FURUSAKA Michihiro, SHIMIZU Hirohiko, KIYANAGI Yoshiaki

Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan Vol. 2006s ( 0 ) page： 64 - 64 2006

20aSF-4 Highly polarized neutron beam produced by a quadrupole magnet and its application to fundamental physics

Yamada S., Oku T., Mishima K., Sato H., Hirota K., Morishima T., Ohno M., Shinohara T., Suzuki J., Shimizu H.M.

Meeting Abstracts of the Physical Society of Japan Vol. 61.2.1 ( 0 ) page： 29 2006

development of gadorinium system thin scintillator (2)

TSUCHIDA Syouhei, HARUNA Jun, KANEKO Junichi, SUSA Kenzou, MIURA Seiji, OKU Takayuki, FUJITA Fumiyuki, HOMMA Akira, SAWAMURA Teruko, FURUSAKA Michihiro, SHIMIZU Hirohiko, KIYANAGI Yoshiaki

Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan Vol. 2006s ( 0 ) page： 65 - 65 2006

30aWD-5 Development of low energy particle detector using superconducting transition edge sensor (3)

Ohno M., Sato H., Morishima T., Mishima K., Ikeda T., Yamada S., Shimizu H.M.

Meeting Abstracts of the Physical Society of Japan Vol. 61.1.1 ( 0 ) page： 73 2006

30pXD-7 Development of Neutron Focusing Devices using Supermirrors with a Parabolic Surface for Thermal Neutrons

Ikeda K., Shinohara T., Hirota K., Sato H., Shimizu H.M., Hino M., Oku T., Suzuki J., Soyama K., Ohoyama K., Hiraka H.

Meeting Abstracts of the Physical Society of Japan Vol. 61.1.4 ( 0 ) page： 965 2006

30pXD-6 Jamin type cold-neutron interferometer for precise measurement of Aharonov-Casher effect

Seki Y., Funahashi H., Taketani K., Hino M., Kitaguchi M., Otake Y., Shimizu H.M.

Meeting Abstracts of the Physical Society of Japan Vol. 61.1.4 ( 0 ) page： 965 2006

30pXD-5 Development of a neutron polarizer based on a quadrupole magnet

Oku T., Yamada S., Suzuki J., Mishima K., Shinohara T., Ikeda K., Hirota K., Sato H., Shimizu H.M.

Meeting Abstracts of the Physical Society of Japan Vol. 61.1.4 ( 0 ) page： 965 2006

Development of Mach-Zehnder interferometer and "Coherent beam steering" technique for cold neutrons

Taketani K., Funahashi H., Seki Y., Hino M., Kitaguchi M., Maruyama R., Otake Y., Shimizu H.M.

Proceedings of the 8th International Symposium on Foundations of Quantum Mechanics in the Light of New Technology, ISQM-Tokyo 2005 page： 282 - 285 2006

Publisher：Proceedings of the 8th International Symposium on Foundations of Quantum Mechanics in the Light of New Technology, ISQM-Tokyo 2005

We are developing multilayer interferometer of Mach-Zehnder type for cold neutrons. To fulfill severe requirements for aligning the four mirrors, we utilize six solid-etalon-plates and a high precision flat base plate. New devices making use of magnetic birefringence have been developed and demonstrated to be useful for fine adjustment of superposition between the two paths labeled with neutron spin.

DOI： 10.1142/9789812773210_0060

Polyimide Buffer Layer for STJ Photon Detector

Taino T., Yoshida M., Narisawa M., Myoren H., Kikuchi K., Nakagawa H., Aoyagi M., Sato H., Shimizu H. M., Takada S.

7TH EUROPEAN CONFERENCE ON APPLIED SUPERCONDUCTIVITY (EUCAS'05) Vol. 43 page： 1319 - 1321 2006

THz imaging with a linear array detector based on superconducting tunnel junctions

Ariyoshi, S; Otani, C; Dobroiu, A; Matsuo, H; Sato, H; Taino, T; Kawase, K; Shimizu, HM

CONFERENCE DIGEST OF THE 2006 JOINT 31ST INTERNATIONAL CONFERENCE ON INFRARED AND MILLIMETER WAVES AND 14TH INTERNATIONAL CONFERENCE ON TERAHERTZ ELECTRONICS page： 395 - 395 2006

Upgrade of the 32 m small-angle neutron scattering instrument SANS-U

Okabe, S; Nagao, M; Karino, T; Watanabe, S; Adachi, T; Shimizu, H; Shibayama, M

JOURNAL OF APPLIED CRYSTALLOGRAPHY Vol. 38 ( 6 ) page： 1035 - 1037 2005.12

Publisher：Journal of Applied Crystallography

The small-angle neutron scattering instrument, SANS-U, owned by the Institute for Solid State Physics, The University of Tokyo, has been upgraded. The SANS-U is a 32 m SANS instrument installed in 1991 at the guide hall of the JRR-3M research reactor of the Japan Atomic Energy Research Institute, and has been serving for inter-university cooperative research use since 1993. The major upgrades include (i) replacement of the two-dimensional area detector by a multi-wire type position-sensitive proportional counter, (ii) renewal of the operating system from a VAX and sequencers to an integrated PXI system controlled by LabVIEW-RT software, (iii) a focusing collimation system, and (iv) a variety of accessory equipment. These upgrades provide a wide dynamic range of neutron counting, user-friendly operation and real-time circular averaging of two-dimensional data. © 2005 International Union of Crystallography - all rights reserved.

DOI： 10.1107/S0021889805029201

Detection of direct and indirect terahertz waves using a Nb-based superconducting tunnel junction

Otani C., Nakano R., Taino T., Shibuya T., Ariyoshi S., Myoren H., Sato H., Shimizu H.M., Takada S., Kawase K.

The Joint 30th International Conference on Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics, 2005. IRMMW-THz 2005 Vol. 1 page： 263 - 264 2005.12

Publisher：The Joint 30th International Conference on Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics, 2005. IRMMW-THz 2005

We are developing a broadband THz detectors using Nb-based superconducting tunnel junctions. We found two components in a current signal for 1-2 THz pulse input. From the comparison of results obtained for the signals, the frequency response for the different size of STJs and the STJs fabricated on different substrate materials, we demonstrate that they correspond to photons absorbed with the superconductor electrode (refered as 'direct' component) and phonons generated by photons absorbed with the substrate (refered as 'phonon-mediated' component). © 2005 IEEE.

Small-angle neutron scattering study on the relation between abnormal brain protein structure and neuropathy; mechanism of the abnormal aggregation of microtubule-associated tau

Naito S., Mochizuki H., Yasuda T., Mizuno Y., Furusaka M., Ikeda S., Adachi T., Shimizu H.M., Suzuki J., Fujiwara S.

Polymer Preprints, Japan Vol. 54 ( 2 ) page： 4881 - 4882 2005.12

Publisher：Polymer Preprints, Japan

Tauopacy is the abnormal aggregation of tau which is one of the microtubule-associated proteins often observed in Alzheimer's disease and Parkinson's disease brain. Such an abnormal protein aggregation in cells causes cellular degeneration and death, and finally ends up with grave disorders. We synthesized human recombinant human tau and evaluated the structure in water by dynamic light scattering (DLS) and small-angle neutron scattering (SANS). SANS showed tau (46Kda,consisting of 448a.a.) behaved in water as if it were originally and highly polymerized rod-like fibers although the SDS-page showed tau was refined to a single molecule. After we confirmed tau heated with reducing agent showed a single dispersion by DLS, we observed the structure by SANS equipped with 40 fresnel lenses at a lower concentration, C*. The radius of gyration of the tau cluster was estimated to be 272 Å from the Gunier analysis on the SANS profile in the lower q ranges. We clarified that normal tau proteins form a huge globule cluster in water by self-assembly, furthermore, they form a fibril by intermolecular cystine cross-linking under oxidative environment.

Development of superconducting sextupole magnet using HTS coated conductor for neutron-focusing device

KOYANAGI Kei, TOSAKA Taizo, ONO Michitaka, KURIYAMA Toru, WATANABE Ikuo, TSUCHIYA Kiyosumi, SUZUKI Jun-ichi, ADACHI Tomohiro, SHIMIZU M. Hirohiko

Vol. 73 page： 246 2005.11

The focal surface of the EUSO telescope

Kawasaki, Y; Bertaina, M; Ebisuzaki, T; Kajino, F; Miyazaki, Y; Nagano, M; Sakaki, N; Sato, M; Shimizu, HM; Takizawa, Y; Ameri, M; Catalano, O; Cuneo, S; Fontanelli, F; Gracco, V; Musico, P; Pallavicini, M; Petrolini, A; Pratolongo, R; Sannino, M; Bleurvacq, N; Cadoux, F; Chapron, C; Gorodetzky, P; Nedelec, P; Patzak, T; Plagnol, E; Takahashi, Y

INTERNATIONAL JOURNAL OF MODERN PHYSICS A Vol. 20 ( 29 ) page： 6890 - 6893 2005.11

Global measurement of lightning-associated transient luminous events (TLEs) from space

Sato, M; Ebisuzaki, T; Takizawa, Y; Kawasaki, Y; Sakaki, N; Bertaina, M; Shimizu, HM; Takahashi, Y; Adachi, T

INTERNATIONAL JOURNAL OF MODERN PHYSICS A Vol. 20 ( 29 ) page： 6903 - 6905 2005.11

Publisher：International Journal of Modern Physics A

In this study we present possibility of continuous measurements of lightning- associated transient luminous events (sprites, elves and blue jets) from the ISS altitude using the EUSO telescope. From global lightning data we estimated possible detection rates of lightning and TLEs. We also estimated photon numbers and optical spectra of TLEs in the near-ultraviolet region (300-400 nm) where the fluorescence emission caused by CRs exists. These results imply that EUSO has enough capabilities to monitor not only super-GZK CRs but also global lightning and TLEs. © World Scientific Publishing Company.

DOI： 10.1142/S0217751X05030454

Photomultiplier development and wavelength shifter manufacturing to increase the detection of faint fluorescence signals

Bertaina, M; Ebisuzaki, T; Hirota, K; Kawasaki, Y; Sakaki, N; Sato, M; Shimizu, HM; Shinohara, T; Takizawa, Y

INTERNATIONAL JOURNAL OF MODERN PHYSICS A Vol. 20 ( 29 ) page： 6872 - 6874 2005.11

Publisher：International Journal of Modern Physics A

RIKEN has developed in collaboration with Hamamatsu a new type of Multi Anode Photomultiplier (MAPMT), R8900 series, with a large sensitive area of ∼83% of the physical surface. The performance of R8900 is reviewed in the following. RIKEN has also manufactured a new type of wavelength shifter (w.s.) film to shift near-UV light (330 ÷ 400 nm) to visible one. This film uses POPOP as a shifter and EPO-TEX as a substrate. The quantum efficiency of the film reaches ∼80%. © World Scientific Publishing Company.

DOI： 10.1142/S0217751X05030351

Development of terahertz wave detector using superconducting tunnel junction

Taino, T; Hoshino, K; Nakano, R; Otani, C; Myoren, H; Kawase, K; Shibuya, T; Sato, H; Shimizu, HM; Takada, S

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS Vol. 426 ( II ) page： 1731 - 1735 2005.10

Publisher：Physica C: Superconductivity and its Applications

We have developed a new terahertz (THz) wave detector using an Nb-based superconducting tunnel junction (STJ). The STJ consists of a Nb/Al/AlO x/Al/Nb structure on a single-crystal LiNbO3 substrate. Using LiNbO3 as a substrate, an irradiating THz wave is converted to phonons in LiNbO3, which has a relatively high absorption coefficient. The phonons propagating in the substrate reach the Nb base electrode of the STJ and break Cooper pairs. As a result, the THz wave can be detected as tunneling current signals in the STJ. THz waves from a widely tunable THz-wave parametric oscillator (TPO) were irradiated on to the STJ, which acted as a THz wave detector. The STJs were cooled to an operating temperature of 0.4 K using a 3He cryostat. We have observed STJ signals related to THz wave irradiations. In this paper, fabrication processes and characteristics of THz wave detectors using STJs are also discussed. © 2005 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.physc.2005.02.137

Proton Polarization with Naphthalene Crystals by Integrated Solid Effect on Photoexcited Triplet State

Iinuma Masataka, Takahashi Yoshiro, Shaké Ippei, Oda Masahiro, Shimizu Hirohiko M., Masaike Akira, Yabuzaki Tsutomu

Journal of the Physical Society of Japan Vol. 74 ( 9 ) page： 2622 - 2630 2005.9

Language：English Publisher：THE PHYSICAL SOCIETY OF JAPAN

We have carried out detailed systematic studies of relaxation effects, which contribute to a significant improvement in proton polarization in a single crystal of naphthalene doped with pentacene. The experiments have been performed in a magnetic field of 3 kG at room temperature or at 77 K and with a pulsed dye laser or a pulsed N<SUB>2</SUB> laser. We have found that a relaxation rate in the presence of irradiation with visible light (λ=595 nm) is much smaller than that with ultraviolet light (λ=337 nm) at room temperature, although the absorption rate of visible light is much larger than that of ultraviolet light. By cooling the crystal, the slow motion of the naphthalene molecules, which is a dominant relaxation process, can be suppressed. Surprisingly, we have found that the relaxation time at 77 K in the presence of the dye laser becomes long, but still depends on the laser power. Our investigation has also indicated that both the longer relaxation time and the irradiation with the dye laser lead to a great improvement in the polarization of protons in the bulk of a crystal from 0.5% at room temperature to 32% at 77 K.

DOI： 10.1143/JPSJ.74.2622

Proton polarization with <i>p</i>-terphenyl crystal by integrated solid effect on photoexcited triplet state

Iinuma, M; Takahashi, Y; Shaké, I; Oda, M; Masaike, A; Yabuzaki, T; Shimizu, HM

JOURNAL OF MAGNETIC RESONANCE Vol. 175 ( 2 ) page： 235 - 241 2005.8

Publisher：Journal of Magnetic Resonance

We have carried out the experiments for polarizing protons in single crystals of p-terphenyl doped with 0.1 mol% pentacene. The experiments have been performed in a magnetic field of 3 kG at room temperature or at 77 K. We obtained the polarization of 1.3% for protons in bulk at room temperature by using a pulsed dye-laser with the wavelength of 590 nm, the average power of 150 mW, and the repetition rate of 50 Hz. The polarization at 77 K reached 18% by irradiation with the dye-laser of 500 mW, 50 Hz and the same wavelength. The polarization of protons was measured by the neutron transmission method also. The result was consistent with that measured by the nuclear magnetic resonance. © 2005 Elsevier Inc. All rights reserved.

DOI： 10.1016/j.jmr.2005.04.011

A broad-band THz radiation detector using a Nb-based superconducting tunnel junction

Otani, C; Taino, T; Nakano, R; Hoshino, K; Shibuya, I; Myoren, H; Ariyoshi, S; Sato, H; Shimizu, HM; Takada, S; Kawase, K

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY Vol. 15 ( 2 ) page： 591 - 594 2005.6

Publisher：IEEE Transactions on Applied Superconductivity

We have proposed and been developing a new broad-band terahertz (THz) radiation detector using a Nb-based superconducting tunnel junction (STJ). The STJ's were fabricated on LiNbO3 and LiTaO3 mono-crystal substrates. We radiated monochromatic THz pulses in the range 1-2 THz with the pulse repetition rate of 49 Hz, and successfully detected the corresponding periodic signals via a charge-sensitive preamplifier. The current signal obtained by the derivative of the output signal gave the time response of about 15-20 microseconds. The frequency response was compared with that of a conventional pyro-electric sensor. We found their frequency response showed the similar shape in frequency, demonstrating the flat response of the STJ detector in 1-2 THz. These results show that the detector can be used as a broad-band THz and far-infrared radiation detector above the frequency corresponding to the energy gap of the superconductor used for the base electrode. © 2005 IEEE.

DOI： 10.1109/TASC.2005.849950

X-ray detection using superconducting tunnel junctions with polyimide insulation layer

Yoshida, M; Hoshino, K; Taino, T; Myoren, H; Takada, S; Kikuchi, K; Nakagawa, H; Aoyagi, M; Sato, H; Shimizu, HM

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY Vol. 15 ( 2 ) page： 606 - 608 2005.6

Publisher：IEEE Transactions on Applied Superconductivity

We have fabricated Nb-based superconducting tunnel junctions (STJs) with Al trapping layers using the photosensitive polyimide insulation layer for X-ray detector. It is possible to simplify the fabrication process of the STJs, because the photosensitive polyimide is used as the insulation layer instead of conventional inorganic insulation films without an etching process in a vacuum chamber. The polyimide insulation layer expects to be stable for thermal cycling between 0.3 K and room temperature. The preliminary experiments of 5.9 keV radiation shows the energy resolution of 86 eV. © 2005 IEEE.

DOI： 10.1109/TASC.2005.849955

Characterization of an STJ-based direct detector of submillimeter waves

Ariyoshi, S; Matsuo, H; Otani, C; Sato, H; Shimizu, HM; Kawase, K; Noguchi, T

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY Vol. 15 ( 2 ) page： 920 - 923 2005.6

Publisher：IEEE Transactions on Applied Superconductivity

We have developed submillimeter-wave direct detectors employing niobium-based superconducting tunnel junctions (STJs), with broadband spectral response, high sensitivity and imaging capability. Spectral response peaked at 650 GHz with a fractional bandwidth of 14 percent, which fits one of the important atmospheric windows for an astronomical project. We also confirmed the linearity of the detector response in the dynamic range greater than 10 6. The measured coupling efficiency was about 0.2, which was lower than the expected value of 0.5. The measured noise current of the detector was 10 fA/√Hz, which agreed with the shot noise from the residual leakage current of 100 pA at 0.3 K. Resultant noise equivalent power (NEP) is 1.6 × 10-16 W/√Hz, that is less than the background photon fluctuation limit for ground-based submillimeter-wave observations. © 2005 IEEE.

DOI： 10.1109/TASC.2005.850119

Characteristics of superconducting series array tunnel junctions for heavy ions

Sato, H; Kurakado, M; Takizawa, Y; Shiki, S; Ohno, M; Shimizu, HM; Morita, K; Morimoto, K; Kaji, D; Akiyama, T

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY Vol. 15 ( 2 ) page： 595 - 598 2005.6

Publisher：IEEE Transactions on Applied Superconductivity

Heavy ion detection experiments were carried out with superconducting series array tunnel junctions. 40Ar beam from linear accelerator was introduced to a cryostat and stopped in a substrate on which series array tunnel junctions were fabricated. An energy resolution of 4.2% was obtained for 191 MeV 40 Ar, but linearity proved poor for energy ranges from 136 MeV to 191 MeV. © 2005 IEEE.

DOI： 10.1109/TASC.2005.849951

The effect of X-ray irradiating superconducting tunnel junctions on Al <inf>2</inf>O<inf>3</inf> and LiNbO<inf>3</inf> substrates

Taino T., Hoshino K., Nakano R., Otani C., Myoren H., Kawase K., Sato H., Shimizu H.M., Takada S.

IEEE Transactions on Applied Superconductivity Vol. 15 ( 2 PART I ) page： 599 - 601 2005.6

Publisher：IEEE Transactions on Applied Superconductivity

We have developed a phononmediated radiation detector using Nb-based superconducting tunnel junctions (STJs). The STJs are fabricated on a substrate as an absorber of the radiation, and a substantial amount of emergent phonons with an energy above the energy gap are detected. The performance of the detector depends on the collection efficiency of the phonons. A selection of an appropriate substrate is required for optimizing the detector performance. We fabricated Nb-based STJs on a Al2O3 and a LiNbO 3 substrates, and compared the pulse heights of substrate phonon events due to X-ray irradiation to the substrates. We found that the maximum pulse height of the phonon events for the LiNbO3 substrate was about twice of that for the Al2O3 substrate, so that these spectra which was obtained from two STJs showed different shapes, especially the peak due to phonon events. © 2005 IEEE.

DOI： 10.1109/TASC.2005.849953

Development of a Nb_3Sn Coil for a Magnetic Neutron Lens (2)

OKAMOTO K., NAKAMURA K., SEKI Y., OHNO M., TAKAO T., OHUCHI N., SHINTOMI T., TSUCHIYA K., ADACHI T., SHIMIZU H., OKU T., SUZUKI J., KIMURA S., HANAI S., URATA M., WATANABE I.

Vol. 72 page： 212 2005.5

CS-7-3 THz DETECTOR USING STJ WITH SUBSTRATE ABSORBER

Myoren Hiroaki, Nakano Ran, Hoshino Koichi, Yoshimura Shota, Taino Tohru, Otani Chiko, Shibuya Takayuki, Sato Hiromi, Shimizu Hirohiko M., Takada Susumu, Kawase Kodo

Proceedings of the IEICE General Conference Vol. 2005 ( 2 ) page： "S - 13"-"S-14" 2005.3

Detection of α particles with superconducting series-junction detectors -: art. no. 083503

Kurakado, M; Sato, H; Takizawa, Y; Shiki, S; Shimizu, HM

APPLIED PHYSICS LETTERS Vol. 86 ( 8 ) page： 1 - 3 2005.2

Publisher：Applied Physics Letters

Superconducting series-junction detectors present the possibility of highly practical radiation detectors with high detection efficiencies, high count rates, and high energy-resolution even for radiation that is difficult to detect efficiently with traditional radiation detectors. A series-junction detector with an effective volume of 8×8×0.4 mm3 has shown that the efficiency of signal charge production is high despite its large volume. The position dependence of signal heights of a series-junction detector with an effective area of 1.5×1.5 mm2 was corrected, and the energy resolution was improved from 2.9% to 0.42%. © 2005 American Institute of Physics.

DOI： 10.1063/1.1866509

Development of polarized neutron optics

Shimizu, HM; Oku, T; Suzuki, J; Furusaka, M; Kiyanagi, Y

PHYSICA B-CONDENSED MATTER Vol. 356 ( 1-4 ) page： 121 - 125 2005.2

A demonstration study of focusing geometry SANS using a magnetic lens

Oku, T; Suzuki, J; Sasao, H; Yamada, S; Furusaka, M; Adachi, T; Shinohara, T; Ikeda, K; Shimizu, HM

PHYSICA B-CONDENSED MATTER Vol. 356 ( 1-4 ) page： 126 - 130 2005.2

Publisher：Physica B: Condensed Matter

A demonstration study of focusing geometry small-angle neutron scattering (FSANS) experiment was successfully performed using a superconducting sextupole magnet as a neutron focusing device and a polarized cold neutron beam. The obtained small-angle neutron scattering intensities from monodispersed SiO 2 spherical particles were discussed in terms of the scattering function taking into account the q-resolution. © 2004 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.physb.2004.10.062

Transmission bender for polarizing neutrons

Krist, T; Peters, J; Shimizu, HM; Suzuki, J; Oku, T

PHYSICA B-CONDENSED MATTER Vol. 356 ( 1-4 ) page： 197 - 200 2005.2

Publisher：Physica B: Condensed Matter

A system of a polarizing solid state bender and a collimator was built and tested. The bender consists of a stack of thin silicon wafers coated with polarizing FeCo-Si supermirrors. The stack is deflected in the middle by one wafer thickness. Inserted in an unpolarized neutron beam this device works as a spin splitter by transmitting the spin down component without any change in its flight path and reflecting the spin up component. With a collimator behind the bender it can be selected which one of the spin components is transmitted. In this way a transmission polarizer for neutrons with wavelengths above 4 Å was built which has a total length of less than 10 cm. © 2004 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.physb.2004.10.076

Some experimental studies on time-of-flight radiography using a pulsed neutron source Open Access

Kiyanagi, Y; Sakamoto, N; Iwasa, H; Kamiyama, T; Hiraga, F; Sato, S; Sagehashi, H; Ino, T; Furusaka, M; Suzuki, J; Gorin, A; Manuilov, I; Ryazantsev, A; Kuroda, K; Sakai, K; Tokanai, F; Miyasaka, H; Adachi, T; Oku, T; Ikeda, K; Suzuki, S; Morimoto, K; Shimizu, HM

IEEE TRANSACTIONS ON NUCLEAR SCIENCE Vol. 52 ( 1 ) page： 371 - 374 2005.2

Publisher：IEEE Transactions on Nuclear Science

We are developing a fiber type two-dimentional (2-D) position-sensitive detector having a spatial resolution less than 0.5 mm in order to use it in the time-of-flight (TOF) measurements. The detector performance was examined, and some experiments on the TOF radiography were performed using this detector. The results indicated that the detector could be applied successfully to the TOF measurement and that the TOF radiography was very useful since it gave more informative data than those obtained by the conventional radiography using a broad energy band. © 2005 IEEE.

DOI： 10.1109/TNS.2005.844299

Boron based oxide scintillation glass for neutron detection

Ishii, M; Kuwano, Y; Asai, T; Asaba, S; Kawamura, M; Senguttuvan, N; Hayashi, T; Kobayashi, M; Nikl, M; Hosoya, S; Sakai, K; Adachi, T; Oku, T; Shimizu, HM

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT Vol. 537 ( 1-2 ) page： 282 - 285 2005.1

Publisher：Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

The luminescence property of Ce-doped oxide glass having B and Li with large absorption coefficient for neutron was investigated by optical transmittance, alpha particle, and neutron irradiation. The light output of the B 2O 3-Li 2O:CeO 2 glass system increased with the increase in B 2O 3 and CeO 2. It was observed that the decay time which showed composition dependence varied in the range 30-45 ns. Although the light output by neutron irradiation is 9.2% of Li-glass, low density and high neutron absorption with short decay time make this new boron-based glass scintillator useful for neutron detection. (c) 2001 Elsevier Science. All rights reserved © 2004 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2004.08.027

13pSE-2 Detection of quantum effect do to earth gravity by using UCN

Kawasaki Shinsuke, Sanuki Tomoyuki, Okawa Hideki, Sonoda Shinya, Komamiya Sachio, Higashi Yasuo, Kume Tatsuya, Enami Kazuhiro, Hino Masahiro, Shimizu Hirohiko

Meeting Abstracts of the Physical Society of Japan Vol. 60.2.1 ( 0 ) page： 14 2005

27aWH-3 Development of low energy particle detector using superconducting transition edge sensor (TES)

Ohno M., Sato H., Takizawa Y., Shiki N., Kurakado M., Ariyoshi S., Mishima K., Ikeda T., Shimizu H. M.

Meeting Abstracts of the Physical Society of Japan Vol. 60.1.1 ( 0 ) page： 81 2005

27aWH-1 A test experiment for neutron beta decay measurement

Mishima Kenji, Yamada Satoru, Hirota Katsuya, Shinohara Takenao, Shiki Shigetomo, Sato Hiromi, Ohono Masashi, Suzuki Jun-ichi, Shimizu Hirohiko M.

Meeting Abstracts of the Physical Society of Japan Vol. 60.1.1 ( 0 ) page： 80 2005

26pZA-5 Measurements of the photon beam asymmetry for the π^0 and η photoproduction at the SPring-8/LEPS beam line

Kino K., Ishikawa T., Okamura K., Saito Y., Shimizu H., Suzuki K., Yonemura H., Iwata T., Kawamura T., Tajima Y., Yoshida H. Y., Toi Y., Matsuda T., Uchida M., Kohri H., Sumihama M., Hasegawa S., Hotta T., Matsumura T., Nakano T., Shiino Y., Fujimura H., Hicks Kenneth, Niiyama M., Miyabe M., Muramatsu N., Sugaya Y., Ohashi Y., Date S., Yorita T., Tsuru T.

Meeting Abstracts of the Physical Society of Japan Vol. 60.1.1 ( 0 ) page： 77 2005

25aYS-2 Development of Neutron Focusing Devices using Supermirrors with a Parabolic Surface for Thermal and Cold Neutrons

Ikeda K., Adachi T., Shinohara T., Morishima T., Hirota K., Mishima K., Sato H., Shimizu H. M., Morita S., Guo J., Suzuki T., Uehara Y., Lin W., Ohmori H., Hino M., Tasaki S., Oku T., Suzuki J., Soyama K., Ohoyama K., Hiraka H.

Meeting Abstracts of the Physical Society of Japan Vol. 60.1.4 ( 0 ) page： 907 2005

24pWJ-11 Detector of Quantum effect due to gravity by using UCN

Kawasaki Shinsuke, Sanuki Tomoyuki, Okawa Hideki, Sekiguti Toyokazu, Komamiya Satio, Hino Masahiro, Shimizu Hirohiko, Higashi Yasuo, Kume Tatsuya, Enami Kazuhiro

Meeting Abstracts of the Physical Society of Japan Vol. 60.1.1 ( 0 ) page： 22 2005

13pSE-3 Detection of quantum effect do to earth gravity by using UCN

Sonoda Shinya, Kawasaki Shinsuke, Okawa Hideki, Komamiya Sachio, Hino Masahiro, Shimizu Hirohiko, Sanuki Tomoyuki

Meeting Abstracts of the Physical Society of Japan Vol. 60.2.1 ( 0 ) page： 14 2005

A possible cosmic ray source in TeV and EeV from the direction around the Cygnus Loop

Takeda M., Nagano M., Watanabe Y., Chikawa M., Fukushima M., Hayashida N., Honda K., Inoue N., Kadota K., Kakimoto F., Kamata K., Kawaguchi S., Kawakami S., Kawasaki Y., Kawasumi N., Mase K., Mizobuchi S., Ohoka H., Osone S., Sakaki N., Sakurai N., Sasano M., Shimizu H.M., Shinozaki K., Teshima M., Torii R., Tsushima I., Uchihori Y., Yamamoto T., Yoshida S., Yoshii H.

29th International Cosmic Ray Conference, ICRC 2005 Vol. 7 page： 179 - 182 2005

Publisher：29th International Cosmic Ray Conference, ICRC 2005

With the Akeno Giant Air Shower Array (AGASA), we published the small-scale anisotropy of cosmic rays with energies above 1019 eV. Among them, a broad cluster - BC1 around (20h 50m, 32°) - has interesting characteristics: The time distribution of members of the BC1 cluster is burst-like around MJD50000 , and this cluster locates near the famous supernova remnant: the Cygnus Loop. From this BC1 direction, two observations from the Tibet and Milagro experiments have been reported. In this report, we summarize the results from the whole observation time of AGASA and the Akeno 1km2 array experiment, and the relation with the observations from the Tibet and Milagro experiments is discussed.

Development of a neutron detector based on a position-sensitive photomultiplier

Hirota, K; Shinohara, T; Ikeda, K; Mishima, K; Adachi, T; Morishima, T; Satoh, S; Oku, T; Yamada, S; Sasao, H; Suzuki, J; Shimizu, HM

PHYSICAL CHEMISTRY CHEMICAL PHYSICS Vol. 7 ( 8 ) page： 1836 - 1838 2005

Publisher：Physical Chemistry Chemical Physics

A neutron scintillation detector based on a position-sensitive photomultiplier has been developed for neutron spin echo and small angle neutron scattering measurements. This photomultiplier has good spatial resolution, less than 1 mm2. The detection efficiency of gamma ray background is very low for using a thin ZnS/6LiF scintillator. The effective area of this detector is around 60 cm2. © The Owner Societies 2005.

DOI： 10.1039/b417838f

Detection of direct and indirect terahertz waves using a Nb-based superconducting tunnel junction

Otani, C; Nakano, R; Taino, T; Shibuya, T; Ariyoshi, S; Myoren, H; Sato, H; Shimizu, HM; Takada, S; Kawase, K

IRMMW-THz2005: The Joint 30th International Conference on Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics, Vols 1 and 2 page： 263 - 264 2005

Chemical composition of ultra-high energy cosmic rays estimated by muon measurement with AGASA

Shinozaki K., Chikawa M., Fukushima M., Hayashida N., Honda K., Inoue N., Kadota K., Kakimoto F., Kamata K., Kawaguchi S., Kawakami S., Kawasaki Y., Kawasumi N., Mase K., Mizobuchi S., Nagano M., Ohoka H., Osone S., Sakaki N., Sakurai N., Sasano M., Shimizu H.M., Takeda M., Teshima M., Torii R., Tsushima I., Uchihori Y., Yamamoto T., Yoshida S., Yoshii H.

29th International Cosmic Ray Conference, ICRC 2005 Vol. 7 page： 151 - 154 2005

Publisher：29th International Cosmic Ray Conference, ICRC 2005

The chemical composition of ultra-high energy cosmic rays (UHECRs; > 1019 eV) is a key parameter to understand their nature and origin. In the Akeno Giant Air Shower Array (AGASA) experiment, we measured the muon density at 1000 m from the cores for 159 UHECR events. The data were interpreted by the recent CORSIKA simulation (version 6.203) with QGSJET01 and SIBYLL2.1 interaction models. The data is consistent with light components for the QGSJET model. No positive signature has been found for the gamma ray dominance. In the presentation at the conference we will report detailed results and comparisons with the results from other experiments.

Characteristics of multi-anode photomultiplier tube for the EUSO focal surface detector

Kawasaki Y., Bertaina M.E., Sakaki N., Sato M., Shimizu H.M., Takizawa Y., Uchihori Y., Inoue N., Ohtsu I., Inoue K., Sawabe T., Kajino F.

29th International Cosmic Ray Conference, ICRC 2005 Vol. 8 page： 165 - 168 2005

Publisher：29th International Cosmic Ray Conference, ICRC 2005

The focal surface of the EUSO telescope consists of a few hundred thousand of pixels of photo-detectors and detects air showers as mosaic images. The strongest requirement for the focal surface detector is the maximization of the photon detection efficiency together with the uniformity over the focal surface. We have developed a new type of multi-anode photomultiplier tube (MAPMT). The tatal photon detection efficiency has improved than before by about 2.1 times.

Development of elementary cell module for the EUSO focal surface detector Open Access

Takizawa Y., Kawasaki Y., Sato M., Bertaina M.E., Ebisuzaki T., Shimizu H.M., Sawabe T., Kajino F., Sato I., Takara H., Isono N., Ameri M., Cuneo S., Fontanelli F., Gracco V., Musico P., Pallavicini M., Petrolini A., Sannino M., Siccardi F., Thea A.

29th International Cosmic Ray Conference, ICRC 2005 Vol. 8 page： 213 - 216 2005

Publisher：29th International Cosmic Ray Conference, ICRC 2005

The Focal Surface detector of EUSO (Extreme Universe Space Observatory) consists of small autonomous functional units (elementary cell, EC) assembled in larger modules (Photo Detector Modules, PDM). Each EC is conceived as an array of 4 multianode photomultipliers (MAPMTs). We have developed EC structure for the current baseline of the multianode photomultiplier (MAPMT, R8900-M36). As the mechanical characteristics of the PDM structure (e.g. robustness to thermal and launch shocks, vibrations at launch) will affect the EC structure, we have also built a trial PDM, consisting of 36 MAPMTs (9 ECs) arranged in a cartesian layout. The purpose of such trial PDM is to develop and optimize the EC structure.

Measurement and alleviation of subsurface damage in a thick-crystal neutron interferometer

Heacock Benjamin, Haun Robert, Hirota Katsuya, Hosobata Takuya, Huber Michael G., Jamer Michelle E., Kitaguchi Masaaki, Pushin Dmitry A., Shimizu Hirohiko, Taminiau Ivar, Yamagata Yutaka, Yamamoto Tomoki, Young Albert R.

ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES Vol. 75 page： 833 - 841 2019.11

New precise measurements of muonium hyperfine structure at J-PARC MUSE

Strasser P., Abe M., Aoki M., Choi S., Fukao Y., Higashi Y., Higuchi T., Iinuma H., Ikedo Y., Ishida K., Ito T., Ito T. U., Iwasaki M., Kadono R., Kamigaito O., Kanda S., Kawagoe K., Kawall D., Kawamura N., Kitaguchi M., Koda A., Kojima K. M., Kubo K., Matama M., Matsuda Y., Matsudate Y., Mibe T., Miyake Y., Mizutani T., Nagamine K., Nishimura S., Ogitsu T., Saito N., Sasaki K., Seo S., Shimizu H. M., Shimomura K., Suchara T., Tajima M., Tanaka K. S., Tanaka T., Tojo J., Tomono D., Torii H. A., Torikai E., Toyoda A., Tsutsumi Y., Ueno K., Ueno Y., Yagi D., Yamamoto A., Yamanaka T., Yamazaki T., Yasuda H., Yoshida M., Yoshioka T.

QUANTUM TECHNOLOGY INTERNATIONAL CONFERENCE 2018 (QTECH 2018) Vol. 198 2019

EUSO-TA – First results from a ground-based EUSO telescope Open Access

Abdellaoui, G., Abe, S., Adams, J.H., Ahriche, A., Allard, D., Allen, L., Alonso, G., Anchordoqui, L., Anzalone, A., Arai, Y., Asano, K., Attallah, R., Attoui, H., Ave Pernas, M., Bacholle, S., Bakiri, M., Baragatti, P., Barrillon, P., Bartocci, S., Bayer, J., Beldjilali, B., Belenguer, T., Belkhalfa, N., Bellotti, R., Belov, A., Belov, K., Belz, J.W., Benmessai, K., Bertaina, M., Biermann, P.L., Biktemerova, S., Bisconti, F., Blanc, N., Blecki, J., Blin-Bondil, S., Bobik, P., Bogomilov, M., Bozzo, E., Bruno, A., Caballero, K.S., Cafagna, F., Campana, D., Capdevielle, J.-N., Capel, F., Caramete, A., Caramete, L., Carlson, P., Caruso, R., Casolino, M., Cassardo, C., Castellina, A., Catalano, O., Cellino, A., Chikawa, M., Chiritoi, G., Christl, M.J., Connaughton, V., Conti, L., Cordero, G., Cotto, G., Crawford, H.J., Cremonini, R., Csorna, S., Cummings, A., Dagoret-Campagne, S., De Donato, C., de la Taille, C., De Santis, C., del Peral, L., Di Martino, M., Djemil, T., Dutan, I., Ebersoldt, A., Ebisuzaki, T., Engel, R., Eser, J., Fenu, F., Fernández-González, S., Fernández-Soriano, J., Ferrarese, S., Flamini, M., Fornaro, C., Fouka, M., Franceschi, A., Franchini, S., Fuglesang, C., Fujii, T., Fujimoto, J., Fukushima, M., Galeotti, P., García-Ortega, E., Garipov, G., Gascón, E., Genci, J., Giraudo, G., González Alvarado, C., Gorodetzky, P., Greg, R., Guarino, F., Guzmán, A., Hachisu, Y., Haiduc, M., Harlov, B., Haungs, A., Hernández Carretero, J., Hidber Cruz, W., Ikeda, D., Inoue, N., Inoue, S., Isgrò, F., Itow, Y., Jammer, T., Jeong, S., Joven, E., Judd, E.G., Jung, A., Jochum, J., Kajino, F., Kajino, T., Kalli, S., Kaneko, I., Karadzhov, Y., Karczmarczyk, J., Katahira, K., Kawai, K., Kawasaki, Y., Kedadra, A., Khales, H., Khrenov, B.A., Kim, J.-S., Kim, S.-W., Kleifges, M., Klimov, P.A., Kolev, D., Krantz, H., Kreykenbohm, I., Kudela, K., Kurihara, Y., Kusenko, A., Kuznetsov, E., La Barbera, A., Lachaud, C., Lahmar, H., Lakhdari, F., Larsson, O., Lee, J., Licandro, J., López Campano, L., Maccarone, M.C., Mackovjak, S., Mahdi, M., Maravilla, D., Marcelli, L., Marcos, J.L., Marini, A., Marszal, W., Martens, K., Martín, Y., Martinez, O., Martucci, M., Masciantonio, G., Mase, K., Mustafa, M., Matev, R., Matthews, J.N., Mebarki, N., Medina-Tanco, G., Mendoza, M.A., Menshikov, A., Merino, A., Meseguer, J., Meyer, S.S., Mimouni, J., Miyamoto, H., Mizumoto, Y., Monaco, A., Morales de los Ríos, J.A., Nagataki, S., Naitamor, S., Napolitano, T., Nava, R., Neronov, A., Nomoto, K., Nonaka, T., Ogawa, T., Ogio, S., Ohmori, H., Olinto, A.V., Orleański, P., Osteria, G., Pagliaro, A., Painter, W., Panasyuk, M.I., Panico, B., Parizot, E., Park, I.H., Pastircak, B., Patzak, T., Paul, T., Pérez-Grande, I., Perfetto, F., Peter, T., Picozza, P., Pindado, S., Piotrowski, L.W., Piraino, S., Placidi, L., Plebaniak, Z., Pliego, S., Pollini, A., Polonski, Z., Popescu, E.M., Prat, P., Prévôt, G., Prieto, H., Puehlhofer, G., Putis, M., Rabanal, J., Radu, A.A., Reyes, M., Rezazadeh, M., Ricci, M., Rodríguez Frías, M.D., Ronga, F., Roudil, G., Rusinov, I., Rybczyński, M., Sabau, M.D., Sáez Cano, G., Sagawa, H., Sahnoune, Z., Saito, A., Sakaki, N., Salazar, H., Sanchez Balanzar, J.C., Sánchez, J.L., Santangelo, A., Sanz-Andrés, A., Sanz Palomino, M., Saprykin, O., Sarazin, F., Sato, M., Schanz, T., Schieler, H., Scotti, V., Selmane, S., Semikoz, D., Serra, M., Sharakin, S., Shimizu, H.M., Shin, H.S., Shinozaki, K., Shirahama, T., Sokolsky, P., Spataro, B., Stan, I., Sugiyama, T., Supanitsky, D., Suzuki, M., Szabelska, B., Szabelski, J., Tajima, N., Tajima, T., Takahashi, Y., Takami, H., Takeda, M., Takizawa, Y., Talai, M.C., Tameda, Y., Tenzer, C., Thomas, S.B., Thomson, G.B., Tibolla, O., Tkachev, L., Tokuno, H., Tomida, T., Tone, N., Toscano, S., Traïche, M., Tsenov, R., Tsunesada, Y., Tsuno, K., Tubbs, J., Turriziani, S., Uchihori, Y., Vaduvescu, O., Valdés-Galicia, J.F., Vallania, P., Vankova, G., Vigorito, C., Villaseñor, L., Vlcek, B., von Ballmoos, P., Vrabel, M., Wada, S., Watanabe, J., Watts, J., Weber, M., Weigand Muñoz, R., Weindl, A., Wiencke, L., Wille, M., Wilms, J., Włodarczyk, Z., Yamamoto, T., Yang, J., Yano, H., Yashin, I.V., Yonetoku, D., Yoshida, S., Young, R., Zgura, I.S., Zotov, M.Y., Zuccaro Marchi, A.

Astroparticle Physics Vol. 102 page： 98 - 111 2018.11

A search for possible long range spin dependent interactions of the neutron from exotic vector boson exchange Open Access

Haddock C, Amadio J, Anderson E, Barron-Palos L, Crawford B, Crawford C, Esposito D, Fox W, Francis I, Fry J, Gardiner H, Holley A, Korsak K, Lieffers J, Magers S, Maldonado-Velazquez M, Mayorov D, Nico J. S, Okudaira T, Paudel C, Santra S, Sarsour M, Shimizu H. M, Snow W. M, Sprow A, Steffen K, Swanson H. E, Tovesson F, Vanderwerp J, Yergeau P. A

PHYSICS LETTERS B Vol. 783 page： 227 - 233 2018.8

The general relativistic effects on the magnetic moment in Earth's gravity Reviewed Open Access

Morishima Takahiro, Futamase Toshifumi, Shimizu Hirohiko M

PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS Vol. 2018 ( 6 ) 2018.6

First observations of speed of light tracks by a fluorescence detector looking down on the atmosphere

Abdellaoui G., Abe S., Adams J. H. Jr., Ahriche A., Allard D., Allen L., Alonso G., Anchordoqui L., Anzalone A., Arai Y., Asano K., Attallah R., Attoui H., Ave Pernas M., Bacholle S., Bakiri M., Baragatti P., Barrillon P., Bartocci S., Bayer J., Beldjilali B., Belenguer T., Belkhalfa N., Bellotti R., Belov A., Belov K., Benmessai K., Bertainaek M., Biermann P. L., Biktemerova S., Bisconti F., Blanc N., Blecki J., Blin-Bondil S., Bobik P., Bogomilov M., Bozzo E., Bruno A., Caballero K. S., Cafagna F., Campana D., Capdevielle J-N, Capel F., Caramete A., Caramete L., Carlson P., Caruso R., Casolino M., Cassardo C., Castellina A., Catalano C., Catalano O., Cellino A., Chikawa M., Chiritoi G., Christl M. J., Connaughton V, Conti L., Cordero G., Cotto G., Crawford H. J., Cremonini R., Csorna S., Cummings A., Dagoret-Campagne S., De Donato C., de la Taille C., De Santis C., del Peral L., Di Martino M., Damian A. Diaz, Djemil T., Dutan I, Ebersoldt A., Ebisuzaki T., Engel R., Eser J., Fenuek F., Fernandez-Gonzalez S., Fernandez-Soriano J., Ferrarese S., Flamini M., Fornaro C., Fouka M., Franceschi A., Franchini S., Fuglesang C., Fujii T., Fujimoto J., Fukushima M., Galeotti P., Garcia-Ortega E., Garipov G., Gascon E., Genci J., Giraudo G., Gonzalez Alvarado C., Gorodetzky P., Greg R., Guarino F., Guzman A., Hachisu Y., Haiduc M., Harlov B., Haungs A., Hernandez Carretero J., Hidber Cruz W., Ikeda D., Inoue N., Inoue S., Isgro F., Itow Y., Jammer T., Jeong S., Joven E., Judd E. G., Jung A., Jochum J., Kajino F., Kajino T., Kalli S., Kaneko I, Karadzhov Y., Karczmarczyk J., Katahira K., Kawai K., Kawasaki Y., Kedadra A., Khales H., Khrenov B. A., Kim Jeong-Sook, Kim Soon-Wook, Kleifges M., Klimov P. A., Kolev D., Krantz H., Kreykenbohm I, Kudela K., Kurihara Y., Kusenko A., Kuznetsov E., La Barbera A., Lachaud C., Lahmar H., Lakhdari F., Larson R., Larsson O., Lee J., Licandro J., Lopez Campano L., Maccarone M. C., Mackovjak S., Mahdi M., Maravilla D., Marcelli L., Marcos J. L., Marini A., Marszal W., Martens K., Martin Y., Martinez O., Martucci M., Masciantonio G., Mase K., Mastafa M., Matev R., Matthews J. N., Mebarki N., Medina-Tanco G., Mendoza M. A., Menshikov A., Merino A., Meseguer J., Meyer S. S., Mimouni J., Miyamoto H., Mizumoto Y., Monaco A., Morales de los Rios J. A., Moretto C., Nagataki S., Naitamor S., Napolitano T., Naslund W., Nava R., Neronov A., Nomoto K., Nonaka T., Ogawa T., Ogio S., Ohmori H., Olinto A. V, Orleanski P., Osteria G., Pagliaro A., Painter W., Panasyuk M. I, Panico B., Pasqualino G., Parizot E., Park I. H., Pastircak B., Patzak T., Paul T., Perez-Grande I, Perfetto F., Peter T., Picozza P., Pindado S., Piotrowski L. W., Piraino S., Placidi L., Plebaniak Z., Pliego S., Pollini A., Polonski Z., Popescu E. M., Prat P., Prevot G., Prieto H., Puehlhofer G., Putis M., Rabanal J., Radu A. A., Reyes M., Rezazadeh M., Ricci M., Rodriguez Frias M. D., Rodencal M., Ronga F., Roudil G., Rusinov I, Rybczynski M., Sabau M. D., Saez Cano G., Sagawa H., Sahnoune Z., Saito A., Sakaki N., Salazar H., Sanchez Balanzar J. C., Sanchez J. L., Santangelo A., Sanz-Andres A., Sanz Palomino M., Saprykin O., Sarazin F., Sato M., Schanz T., Schieler H., Scotti V, Selmane S., Semikoz D., Serra M., Sharakin S., Shimizu H. M., Shinozaki K., Shirahama T., Spataro B., Stan I, Sugiyama T., Supanitsky D., Suzuki M., Szabelska B., Szabelski J., Tajima N., Tajima T., Takahashi Y., Takami H., Takeda M., Takizawa Y., Talai M. C., Tenzer C., Thomas S. B., Tibolla O., Tkachev L., Tokuno H., Tomida T., Tone N., Toscano S., Traiche M., Tsenov R., Tsunesada Y., Tsuno K., Tubbs J., Turriziani S., Uchihori Y., Vaduvescu O., Valdes-Galicia J. F., Vallania P., Vankova G., Vigorito C., Villasenor L., Vlcek B., Von Ballmoos P., Vrabel M., Wada S., Watanabe J., Watts J. Jr., Weber M., Weigand Munoz R., Weindl A., Wiencke L., Wille M., Wilms J., Wlodarczyk Z., Yamamoto T., Yang J., Yano H., Yashin I. V, Yonetoku D., Yoshida S., Young R., Zgura I. S., Zotov M. Yu, Marchi A. Zuccaro

JOURNAL OF INSTRUMENTATION Vol. 13 2018.5

Angular distribution of γ rays from neutron-induced compound states of la 140 Open Access

T. Okudaira, S. Takada, K. Hirota, A. Kimura, M. Kitaguchi, J. Koga, K. Nagamoto, T. Nakao, A. Okada, K. Sakai, H. M. Shimizu, T. Yamamoto, T. Yoshioka

Physical Review C Vol. 97 ( 3 ) 2018.3

Language：English Publishing type：Research paper (scientific journal)

© 2018 American Physical Society. The angular distribution of individual γ rays, emitted from a neutron-induced compound-nuclear state via radiative capture reaction of La139(n,γ) has been studied as a function of incident neutron energy in the epithermal region by using germanium detectors. An asymmetry ALH was defined as (NL-NH)/(NL+NH), where NL and NH are integrals of low- and high-energy region of a neutron resonance respectively, and we found that ALH has the angular dependence of (Acosθγ+B), where θγ is the emitted angle of γ rays, with A=-0.3881±0.0236 and B=-0.0747±0.0105 in 0.74 eV p-wave resonance. This angular distribution was analyzed within the framework of interference between s- and p-wave amplitudes in the entrance channel to the compound-nuclear state, and it is interpreted as the value of the partial p-wave neutron width corresponding to the total angular momentum of the incident neutron combined with the weak matrix element, in the context of the mechanism of enhanced parity-violating effects. Additionally, we use the result to quantify the possible enhancement of the breaking of time-reversal invariance in the vicinity of the p-wave resonance.

DOI： 10.1103/PhysRevC.97.034622

Characterization of germanium detectors for the measurement of the angular distribution of prompt γ-rays at the ANNRI in the MLF of the J-PARC Open Access

S. Takada, T. Okudaira, F. Goto, K. Hirota, A. Kimura, M. Kitaguchi, J. Koga, T. Nakao, K. Sakai, H. M. Shimizu, T. Yamamoto, T. Yoshioka

Journal of Instrumentation Vol. 13 ( 2 ) 2018.2

Language：English Publishing type：Research paper (scientific journal)

© 2018 IOP Publishing Ltd and Sissa Medialab. In this study, the germanium detector assembly, installed at the Accurate Neutron-Nuclear Reaction measurement Instruments (ANNRI) in the Material and Life Science Facility (MLF) operated by the Japan Proton Accelerator Research Complex (J-PARC), has been characterized for extension to the measurement of the angular distribution of individual γ-ray transitions from neutron-induced compound states. We have developed a Monte Carlo simulation code using the GEANT4 toolkit, which can reproduce the pulse-height spectra of γ-rays from radioactive sources and (n,γ) reactions. The simulation is applicable to the measurement of γ-rays in the energy region of 0.5-11.0 MeV.

DOI： 10.1088/1748-0221/13/02/P02018

Angular Distribution of gamma-rays from Neutron-induced Compound States of ¹⁴⁰La Reviewed

T.Okudaira, S.Takada, K.Hirota, A.Kimura, M.Kitaguchi, J.Koga, K.Nagamoto, T.Nakao, A.Okada, K.Sakai, H.M.Shimizu, T.Yamamoto, T.Yoshioka

Physical Review C page： 0 2018

Cosmic ray oriented performance studies for the JEM-EUSO first level trigger Open Access

G. Abdellaoui, S. Abe, A. Acheli, J. H. Adams, S. Ahmad, A. Ahriche, J. -N. Albert, D. Allard, G. Alonso, L. Anchordoqui, V. Andreev, A. Anzalone, W. Aouimeur, Y. Arai, N. Arsene, K. Asano, R. Attallah, H. Attoui, M. Ave Pernas, S. Bacholle, M. Bakiri, P. Baragatti, P. Barrillon, S. Bartocci, T. Batsch, J. Bayer, R. Bechini, T. Belenguer, R. Bellotti, A. Belov, K. Belov, B. Benadda, K. Benmessai, A. A. Berlind, M. Bertaina, P. L. Biermann, S. Biktemerova, F. Bisconti, N. Blanc, J. Blecki, S. Blin-Bondil, P. Bobik, M. Bogomilov, M. Bonamente, R. Boudaoud, E. Bozzo, M. S. Briggs, A. Bruno, K. S. Caballero, F. Cafagna, D. Campana, J. -N. Capdevielle, F. Capel, A. Caramete, L. Caramete, P. Carlson, R. Caruso, M. Casolino, C. Cassardo, A. Castellina, G. Castellini, C. Catalano, O. Catalano, A. Cellino, M. Chikawa, G. Chiritoi, M. J. Christl, V. Connaughton, L. Conti, G. Contino, G. Cordero, G. Cotto, H. J. Crawford, R. Cremonini, S. Csorna, S. Dagoret-Campagne, C. De Donato, C. de la Taille, C. De Santis, L. del Peral, M. Di Martino, T. Djemil, S. A. Djenas, F. Dulucq, M. Dupieux, I. Dutan, A. Ebersoldt, T. Ebisuzaki, R. Engel, J. Eser, K. Fang, F. Fenu, S. Fernandez-Gonzalez, J. Fernandez-Soriano, S. Ferrarese, D. Finco, M. Flamini, C. Fornaro, R. Forza, M. Fouka, A. Franceschi, S. Franchini, C. Fuglesang, J. Fujimoto, M. Fukushima, P. Galeotti, E. Garcia-Ortega, G. Garipov, E. Gascon, J. Geary, G. Gelmini, J. Genci, G. Giraudo, M. Gonchar, C. Gonzalez Alvarado, P. Gorodetzky, N. Guardone, F. Guarino, R. Guehaz, A. Guzman, Y. Hachisu, M. Haiduc, B. Harlov, A. Haungs, J. Hernandez Carretero, W. Hidber, K. Higashide, D. Ikeda, H. Ikeda, N. Inoue, S. Inoue, A. Insolia, F. Isgro, Y. Itow, T. Jammer, E. Joven, E. G. Judd, A. Jung, J. Jochum, F. Kajino, T. Kajino, S. Kalli, I. Kaneko, D. Kang, F. Kanouni, Y. Karadzhov, J. Karczmarczyk, M. Karus, K. Katahira, K. Kawai, Y. Kawasaki, A. Kedadra, H. Khales, B. A. Khrenov, Jeong-Sook Kim, Soon-Wook Kim, Sug-Whan Kim, M. Kleifges, P. A. Klimov, D. Kolev, I. Kreykenbohm, K. Kudela, Y. Kurihara, A. Kusenko, E. Kuznetsov, M. Lacombe, C. Lachaud, H. Lahmar, F. Lakhdari, O. Larsson, J. Lee, J. Licandro, H. Lim, L. Lopez Campano, M. C. Maccarone, S. Mackovjak, M. Mahdi, M. Manfrin, D. Maravilla, L. Marcelli, J. L. Marcos, A. Marini, K. Martens, Y. Martin, O. Martinez, G. Masciantonio, K. Mase, R. Matev, J. N. Matthews, N. Mebarki, G. Medina-Tanco, L. Mehrad, M. A. Mendoza, A. Merino, T. Mernik, J. Meseguer, S. Messaoud, O. Micu, M. Mignone, J. Mimouni, H. Miyamoto, Y. Miyazaki, Y. Mizumoto, G. Modestino, A. Monaco, D. Monnier-Ragaigne, J. A. Morales de los Rios, C. Moretto, V. S. Morozenko, B. Mot, T. Murakami, B. Nadji, M. Nagano, M. Nagata, S. Nagataki, T. Nakamura, T. Napolitano, D. Naumov, R. Nava, A. Neronov, K. Nomoto, T. Nonaka, T. Ogawa, S. Ogio, H. Ohmori, A. V. Olinto, P. Orleanski, G. Osteria, W. Painter, M. I. Panasyuk, B. Panico, E. Parizot, I. H. Park, H. W. Park, B. Pastircak, T. Patzak, T. Paul, C. Pennypacker, I. Perez-Grande, F. Perfetto, T. Peter, P. Picozza, T. Pierog, S. Pindado, L. W. Piotrowski, S. Piraino, L. Placidi, Z. Plebaniak, S. Pliego, A. Pollini, E. M. Popescu, P. Prat, G. Prevot, H. Prieto, M. Putis, J. Rabanal, A. A. Radu, M. Rahmani, P. Reardon, M. Reyes, M. Rezazadeh, M. Ricci, M. D. Rodriguez Frias, F. Ronga, M. Roth, H. Rothkaehl, G. Roudil, I. Rusinov, M. Rybczynski, M. D. Sabau, G. Saez Cano, H. Sagawa, Z. Sahnoune, A. Saito, N. Sakaki, M. Sakata, H. Salazar, J. C. Sanchez, J. L. Sanchez, A. Santangelo, L. Santiago Cruz, A. Sanz-Andres, M. Sanz Palomino, O. Saprykin, F. Sarazin, H. Sato, M. Sato, T. Schanz, H. Schieler, V. Scotti, A. Segreto, S. Selmane, D. Semikoz, M. Serra, S. Sharakin, T. Shibata, H. M. Shimizu, K. Shinozaki, T. Shirahama, G. Siemieniec-Ozieblo, J. Sledd, K. Slominska, A. Sobey, I. Stan, T. Sugiyama, D. Supanitsky, M. Suzuki, B. Szabelska, J. Szabelski, H. Tahi, F. Tajima, N. Tajima, T. Tajima, Y. Takahashi, H. Takami, M. Takeda, Y. Takizawa, M. C. Talai, C. Tenzer, O. Tibolla, L. Tkachev, H. Tokuno, T. Tomida, N. Tone, S. Toscano, M. Traiche, R. Tsenov, Y. Tsunesada, K. Tsuno, T. Tymieniecka, Y. Uchihori, M. Unger, O. Vaduvescu, J. F. Valdes-Galicia, P. Vallania, G. Vankova, C. Vigorito, L. Villasenor, B. Vlcek, P. von Ballmoos, M. Vrabel, S. Wada, J. Watanabe, S. Watanabe, J. Watts, M. Weber, R. Weigand Munoz, A. Weindl, T. J. Weiler, T. Wibig, L. Wiencke, M. Wille, J. Wilms, Z. Wlodarczyk, T. Yamamoto, Y. Yamamoto, J. Yang, H. Yano, I. V. Yashin, D. Yonetoku, S. Yoshida, R. Young, I. S. Zgura, M. Yu. Zotov, A. Zuccaro Marchi

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT Vol. 866 page： 150 - 163 2017.9

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER SCIENCE BV

JEM-EUSO is a space mission designed to investigate Ultra-High Energy Cosmic Rays and Neutrinos (E > 5.10(19) eV) from the International Space Station (ISS). Looking down from above its wide angle telescope is able to observe their air showers and collect such data from a very wide area. Highly specific trigger algorithms are needed to drastically reduce the data load in the presence of both atmospheric and human activity related background light, yet retain the rare cosmic ray events recorded in the telescope. We report the performance in offline testing of the first level trigger algorithm on data from JEM-EUSO prototypes and laboratory measurements observing different light sources: data taken during a high altitude balloon flight over Canada, laser pulses observed from the ground traversing the real atmosphere, and model landscapes reproducing realistic aspect ratios and light conditions as would be seen from the ISS itself. The first level trigger logic successfully kept the trigger rate within the permissible bounds when challenged with artificially produced as well as naturally encountered night sky background fluctuations and while retaining events with general air-shower characteristics. (C) 2017 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2017.05.043

Meteor studies in the framework of the JEM-EUSO program Open Access

G. Abdellaoui, S. Abe, A. Acheli, J. H. J. H. Adams, S. Ahmad, A. Ahriche, J. -N. Albert, D. Allard, G. Alonso, L. Anchordoqui, V. Andreev, A. Anzalone, W. Aouimeure, Y. Arai, N. Arsene, K. Asano, R. Attallah, H. Attoui, M. Ave Pemas, S. Bacholle, M. Bakiri, P. Baragatti, P. Barrillon, S. Bartocci, T. Batsch, J. Bayer, R. Bechini, T. Belenguer, R. Bellotti, A. Belov, K. Belov, B. Benadda, K. Benmessai, A. A. Berlind, M. Bertaina, P. L. Biermann, S. Biktemerova, F. Bisconti, N. Blanc, J. Blecki, S. Blin-Bondil, P. Bobik, M. Bogomilov, M. Bonamente, R. Boudaoud, E. Bozzo, M. S. Briggs, A. Bruno, K. S. Caballero, F. Cafagna, D. Campana, J. -N. Capdevielle, F. Capel, A. Caramete, L. Caramete, P. Carlson, R. Caruso, M. Casolino, C. Cassardo, A. Castellina, G. Castellini, C. Catalano, O. Catalano, A. Cellino, M. Chikawa, G. Chiritoi, M. J. Christl, V. Connaughton, L. Conti, G. Cordero, H. J. Crawford, R. Cremonini, S. Csorna, S. Dagoret-Campagne, C. De Donato, C. de la Taille, C. De Santis, L. del Peral, M. Di Martino, T. Djemil, S. A. Djenas, F. Dulucq, M. Dupieux, I. Dutan, A. Ebersoldt, T. Ebisuzaki, R. Engel, J. Eser, K. Fang, F. Fenu, S. Fernandez-Gonzalez, J. Fernandez-Soriano, S. Ferrarese, D. Finco, M. Flamini, C. Fornaro, M. Fouka, A. Franceschi, S. Franchini, C. Fuglesang, J. Fujimoto, M. Fukushima, P. Galeotti, E. Garcia-Ortega, G. Garipov, E. Gascon, J. Geary, G. Gelmini, J. Genci, G. Giraudo, M. Gonchar, C. Gonzalez Alvarado, P. Gorodetzky, F. Guarino, R. Guehaz, A. Guzman, Y. Hachisu, M. Haiduc, B. Harlov, A. Haungs, J. Hernandez Carretero, W. Hidber, K. Higashide, D. Ikeda, H. Ikeda, N. Inoue, S. Inoue, F. Isgro, Y. Itow, T. Jammer, E. Joven, E. G. Judd, A. Jung, J. Jochum, F. Kajino, T. Kajino, S. Kalli, I. Kaneko, D. Kang, F. Kanouni, Y. Karadzhov, J. Karczmarczyk, M. Karus, K. Katahira, K. Kawai, Y. Kawasaki, A. Kedadra, H. Khales, B. A. Khrenov, Jeong-Sook Kim, Soon-Wook Kim, Sug-Whan Kim, M. Kleifges, P. A. Klimov, D. Kolev, I. Kreykenbohm, K. Kudela, Y. Kurihara, A. Kusenko, E. Kuznetsov, M. Lacombe, C. Lachaud, H. Lahmar, F. Lakhdari, O. Larsson, J. Lee, J. Licandro, H. Lim, L. Lopez Campano, M. C. Maccarone, S. Mackovjak, M. Mandi, D. Maravilla, L. Marcelli, J. L. Marcos, A. Marini, K. Martens, Y. Martin, O. Martinez, G. Masciantonio, K. Mase, R. Matev, J. N. Matthews, N. Mebarki, G. Medina-Tanco, L. Mehrad, M. A. Mendoza, A. Merino, T. Memik, J. Meseguer, S. Messaoud, O. Micu, J. Mimouni, H. Miyamoto, Y. Miyazaki, Y. Mizumoto, G. Modestino, A. Monaco, D. Monnier-Ragaigne, J. A. Morales de los Rios, C. Moretto, V. S. Morozenko, B. Mot, T. Murakami, B. Nadji, M. Nagano, M. Nagata, S. Nagataki, T. Nakamura, T. Napolitano, A. Nardellis, D. Naumov, R. Nava, A. Neronov, K. Nomoto, T. Nonaka, T. Ogawa, S. Ogio, H. Ohmori, A. V. Olinto, P. Orleariski, G. Osteria, W. Painter, M. I. Panasyuk, B. Panico, E. Parizot, I. H. Park, H. W. Park, B. Pastircak, T. Patzak, T. Paul, C. Pennypacker, M. Perdichizzi, I. Perez-Grande, F. Perfetto, T. Peter, P. Picozza, T. Pierog, S. Pindado, L. W. Piotrowski, S. Pirainou, L. Placidis, Z. Plebaniak, S. Pliego, A. Pollini, E. M. Popescu, P. Prat, G. Prevot, H. Prieto, M. Putis, J. Rabanal, A. A. Radu, M. Rahmani, P. Reardon, M. Reyes, M. Rezazadeh, M. Ricci, M. D. Rodriguez Frias, F. Ronga, M. Roth, H. Rothkaehl, G. Roudil, I. Rusinov, M. Rybczynski, M. D. Sabau, G. Saez Cano, H. Sagawa, Z. Sahnoune, A. Saito, N. Sakaki, M. Sakata, H. Salazar, J. C. Sanchez, J. L. Sanchez, A. Santangelo, L. Santiago Cruz, A. Sanz-Andres, M. Sanz Palomino, O. Saprykin, F. Sarazin, H. Sato, M. Sato, T. Schanz, H. Schieler, V. Scotti, A. Segreto, S. Selmane, D. Semikoz, M. Serra, S. Sharakin, T. Shibata, H. M. Shimizu, K. Shinozaki, T. Shirahama, G. Siemieniec-Ozieblo, J. Sledd, K. Slomiriska, A. Sobey, I. Stan, T. Sugiyama, D. Supanitsky, M. Suzuki, B. Szabelska, J. Szabelski, H. Tahi, F. Tajima, N. Tajima, T. Tajima, Y. Takahashi, H. Takami, M. Takeda, Y. Takizawa, M. C. Talai, C. Tenzer, O. Tibolla, L. Tkachev, H. Tokuno, T. Tomida, N. Tone, S. Toscano, M. Traiche, R. Tsenov, Y. Tsunesada, K. Tsuno, T. Tymieniecka, Y. Uchihori, M. Unger, O. Vaduvescu, J. F. Valdes-Galicia, P. Vallania, G. Vankova, C. Vigorito, L. Villasenor, B. Vicek, P. von Ballmoos, M. Vrabel, S. Wada, J. Watanabe, S. Watanabe, J. Watts, M. Weber, R. Weigand Munoz, A. Weindl, T. J. Weiler, T. Wibig, L. Wiencke, M. Wille, J. Wilms, Z. Wlodarczyk, T. Yamamoto, Y. Yamamoto, J. Yang, H. Yano, I. V. Yashin, D. Yonetoku, S. Yoshida, R. Young, I. S. Zgura, M. Yu. Zotov, A. Zuccaro Marchi

PLANETARY AND SPACE SCIENCE Vol. 143 page： 245 - 255 2017.9

Language：English Publishing type：Research paper (scientific journal) Publisher：PERGAMON-ELSEVIER SCIENCE LTD

We summarize the state of the art of a program of UV observations from space of meteor phenomena, a secondary objective of the JEM-EUSO international collaboration. Our preliminary analysis indicates that JEM-EUSO, taking advantage of its large FOV and good sensitivity, should be able to detect meteors down to absolute magnitude close to 7. This means that JEM-EUSO should be able to record a statistically significant flux of meteors, including both sporadic ones, and events produced by different meteor streams. Being unaffected by adverse weather conditions, JEM-EUSO can also be a very important facility for the detection of bright meteors and fireballs, as these events can be detected even in conditions of very high sky background. In the case of bright events, moreover, exhibiting some persistence of the meteor train, preliminary simulations show that it should be possible to exploit the motion of the ISS itself and derive at least a rough 3D reconstruction of the meteor trajectory. Moreover, the observing strategy developed to detect meteors may also be applied to the detection of nuclearites, exotic particles whose existence has been suggested by some theoretical investigations. Nuclearites are expected to move at higher velocities than meteoroids, and to exhibit a wider range of possible trajectories, including particles moving upward after crossing the Earth. Some pilot studies, including the approved Mini-EUSO mission, a precursor of JEM-EUSO, are currently operational or in preparation. We are doing simulations to assess the performance of Mini-EUSO for meteor studies, while a few meteor events have been already detected using the ground-based facility EUSO-TA.

DOI： 10.1016/j.pss.2016.12.001

Pseudomagnetic effects for resonance neutrons Reviewed

Vladimir Gudkov, Hirohiko M. Shimizu

Physical Review C Vol. 95 page： 045501 2017.4

A neutron detector with submicron spatial resolution using fine-grained nuclear emulsion

N. Naganawa, S. Awano, M. Hino, M. Hirose, K. Hirota, H. Kawahara, M. Kitaguchi, K. Mishima, T. Nagae, H. M. Shimizu, S. Tasaki, A. Umemoto

NEUTRON IMAGING FOR APPLICATIONS IN INDUSTRY AND SCIENCE Vol. 88 page： 224 - 230 2017

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER SCIENCE BV

We developed a neutron detector with submicron spatial resolution by incorporating Li-6 into a fine-grained nuclear emulsion. Upon exposure to thermal neutrons, tracks from neutron capture events were observed. The detector spatial resolution was estimated from their grain density. Detection efficiency was measured using the detector response to cold neutrons. (C) 2017 The Authors. Published by Elsevier B.V.

DOI： 10.1016/j.phpro.2017.06.031

Erythrokeratoderma Variabilis Caused by p.Gly45Glu in Connexin 31: Importance of the First Extracellular Loop Glycine Residue for Gap Junction Function

Takeichi Takuya, Sugiura Kazumitsu, Hsu Chao-Kai, Nomura Toshifumi, Takama Hiroyuki, Simpson Michael A., Shimizu Hiroshi, McGrath John A., Akiyama Masashi

ACTA DERMATO-VENEREOLOGICA Vol. 96 ( 4 ) page： 557 - 559 2016

Pulsed neutron-beam focusing by modulating a permanent-magnet sextupole lens Reviewed Open Access

Masako Yamada, Yoshihisa Iwashita, Masahiro Ichikawa, Yasuhiro Fuwa, Hiromu Tongu, Hirohiko M. Shimizu, Kenji Mishima, Norifumi L. Yamada, Katsuya Hirota, Yoshie Otake, Yoshichika Seki, Yutaka Yamagata, Masahiro Hino, Masaaki Kitaguchi, Ulf Garbe, Shane J. Kennedy, Wai Tung Lee, Ken H. Andersen, Bruno Guerard, Giuliana Manzin, Peter Geltenbort

PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS Vol. 2015 ( 4 ) 2015.4

Language：English Publishing type：Research paper (scientific journal) Publisher：OXFORD UNIV PRESS INC

We have developed a compact permanent-magnet sextupole lens for neutrons that can focus a pulsed beam with a wide wavelength range-the maximum wavelength being more than double the minimum-while sufficiently suppressing the effect of chromatic aberration. The bore diameter is o15 mm. Three units of a double-ring sextupole with a length of 66 mm are cascaded, resulting in a total length of 198 mm. The dynamic modulation range of the unit-averaged field gradient is 1.06 x 10(4)-5.86 x 10(4) Tm-2. Permanent magnets and newly developed torque-canceling elements make the device compact, its production costs low, and its operation simpler than that of other magnetic lenses. The efficacy of this lens was verified using very cold neutrons. The diameter of the focused beam spots over the wavelength range of 27-55 angstrom was the same as that of the source aperture (2 mm diameter) when the magnification of the optical arrangement was unity. The total beam flux over this wavelength range was enhanced by a factor of 43. The focusing distance from the source to the detector was 1.84 m. In addition, in a demonstration of neutron image magnification, the image of a sample mask magnified by a factor of 4.1 was observed when the magnification of the optical arrangement was 5.0.

DOI： 10.1093/ptep/ptv015

Concepts of Neutron Polarization Analysis Devices for a New Neutron Chopper Spectrometer POLANO, in J-PARC Reviewed

K.Ohoyama, T.Yokoo, S.Itoh, T.Ino, M.Ohkawa, T.Oku, S.Tasaki, K.Iwasa, T.J.Sato, S.Ishimoto, K.Taketani, H.Kira, Y.Sakaguchi, M.Nanbu, H.Hiraka, H.M.Shimizu, M.Takeda, M.Hino, K.Hayashi, U.Fliges, P.Hautle

Journal of Physics Conf. Ser. Vol. 502 page： 012051 2014

Development of a New Neutron Mirror made of Deuterated Diamond-like Carbon Reviewed

D.Sakurai, J.Chiba, T.Ino, K.Kakusho, N.Kaneko, R.Katayama, M.Kitaguchi, K.Mishima, S.Muto, K.Ozeki, H.M.Shimizu, S.Yamashita, T.Yoshioka, D.Nishimura

Journal of Physics Conf. See. Vol. 502 page： 012010 2014

Production of Ultra Cold Neutrons by a Doppler Shifter with Pulsed Neutrons at J-PARC Reviewed

K.Mishima, S.Imajo, M.Hino, T.Ino, Y.Iwashita, R.Katayama, M.Kitaguchi, T.Oda, H.M.Shimizu, M.Utsuro, S.Yamashita, T.Yoshioka

Journal of Physics Conf. Ser. Vol. 502 page： 012030 2014

Neutron-Antineutron Oscillation: A Snowmass 2013 White Paper

K.Babu, S.Banerjee, D.V.Baxter, Z.Berezhiani, M.Bergevin, S.Bhattacharya, S.Brice, T.W.Burgess, L.Castellanos, S.Chattopadhyay, M-C.Chen, C.E.Coppola, R.Cowsik, J.A.Crabtree, P.Das, E.B.Dees, A.Dolgov, G.Dvali, P.Ferguson, M.Frost, T.Gabriel, A.Gal, F.Gallmeier, K.Ganezer, E.Golubeva, V.B.Graves, G.Greene, T.Handler, B.Hartfiel, A.Hawari, L.Heilbronn, C.Johnson, Y.Kamyshkov, B.Kerbikov, M.Kitaguchi, B.Z.Kopeliovich, V.B.Kopeliovich, W.Korsch, V.Kuzmin, C-Y.Liu, P.McGaughey, M.Mocko, R.Mohapatra, N.Mokhov, G.Muhrer, P.Mumm, L.Okun, R.W.Pattie Jr., D.G.Phillips II, C.Quigg, E.Ramberg, A.Ray, A.Roy, A.Ruggles, U.Sarkar, A.Saunders, A P.Serebrov, H.M.Shimizu, R.Shrock, A.K.Sikdar, S.Sjue, W.M.Snow, A.Soha, S.Spanier, S.Striganov, L.Townsend, R.Tschirhart, A.Vainshtein, R.Van Kooten, Z.Wang, B.Wehring and A.R.Young

arXiv:1310.8593v1 page： 1-26 2013.10

An Evaluation of the Exposure in Nadir Observation of the JEM-EUSO Mission Reviewed

J.H.Adams Jr., S.Ahmad, J.-N.Albert, D.Allard, M.Ambrosio, L.Anchordoqui, A.Anzalone, Y.Arai, C.Aramo, K.Asano, M.Ave, P.Barrillon, T.Batsch, J.Bayer, T.Belenguer, R.Bellotti, A.A.Berlind, M.Bertain, P.L.Biermann, S.Biktemerova, C.Blaksley, J.B l¸ecki, S.Blin-Bondilb, J.Blumer, P.Bobik, M.Bogomilov, M.Bonamente, M.S.Briggs, S.Briz, A.Bruno, F.Cafagna, D.Campana, J.-N.Capdevielle, R.Caruso, M.Casolino, C.Cassardo, G.Castellini, O.Catalano, A.Cellino, M.Chikawa, M.J.Christl, V.Connaughton, J.F.Cortes, H.J.Crawford, R.Cremonini, S.Csorna, J.C.D'Olivo, S.Dagoret-Campagne, A.J.de Castro, C.De Donato, C.de la Taille, L.del Peral, A.Dell'Oro, M.P.De Pascale, M.Di Martino, G.Distratis, M.Dupieux, A.Ebersoldt, T.Ebisuzaki, R.Engel, S.Falk, K.Fang, F.Fenu, I.Fernandez-Gomez, S.Ferrarese, A.Franceschi, J.Fujimoto, P.Galeotti, G.Garipov, J.Geary, U.G.Giaccari, G.Giraudo, M.Gonchar, C.Gonz´alez Alvarado, P.Gorodetzky, F.Guarino, A.Guzm´an, Y.Hachisu, B.Harlov, A.Haungs, J.Hernandez Carretero, K.Higashide, T.Iguchi, H.Ikeda, N.Inoue, S.Inoue, A.Insoli, F.Isgro, Y.Itow, E.Joven, E.G.Judd, A.Jung, F.Kajino, T.Kajino, I.Kaneko, Y.Karadzhov, J.Karczmarczyk, K.Katahira, K.Kawai, Y.Kawasaki, B.Keilhauer, B.A.Khrenov, Jeong-Sook Kim, Soon-Wook Kim, Sug-Whan Kim, M.Kleifges, P.A.Klimov, S.H.Ko, D.Kolev, I.Kreykenbohm, K.Kudela, Y.Kurihara, E.Kuznetsov, G.La Rosa, J.Lee, J.Licandro, H.Lim, F.Lopez, M.C.Maccarone, K.Mannheim, L.Marcelli, A.Marini, G.Martin-Chassard, O.Martinez, G.Masciantonio, K.Mase, R.Matev, A.Maurissen, G.Medina-Tanco, T.Mernik, H.Miyamoto, Y.Miyazaki, Y.Mizumoto, G.Modestino, D.Monnier-Ragaigne, J.A.Morales de los Rios, B.Mot, T.Murakami, M.Nagano, M.Nagata, S.Nagataki, T.Nakamura, J.W.Nam, S.Nam, K.Nam, T.Napolitano, D.Naumov, A.Neronov, K.Nomoto, T.Ogawa, H.Ohmori, A.V.Olinto, P.Orleanski, G.Osteria, N.Pacheco, M.I.Panasyuk, E.Parizot, I.H.Park, B.Pastircak, T.Patzak, T.Paul, C.Pennypacker, T.Peter, P.Picozza, A.Pollini, H.Prieto, P.Reardon, M.Reina, M.Reyes, M.Ricci, I.Rodriguez, M.D.Rodriguez Frias, F.Ronga, H.Rothkaehl, G.Roudil, I.Rusinov, M.Rybczynski, M.D.Sabau, G.Saez Cano, A.Saito, N.Sakaki, M.Sakata, H.Salazar, S.Sanchez, A.Santangelo, L.Santiago Cruz, M.Sanz Palomino, O.Saprykin, F.Sarazin, H.Sato, M.Sato, T.Schanz, H.Schieler, V.Scotti, M.Scuderi, A.Segreto, S.Selmane, D.Semikoz, M.Serra, S.Sharakin, T.Shibata, H.M.Shimizu, K.Shinozaki, T.Shirahama, G.Siemieniec-Ozieblo, H.H.Silva Lopez, J.Sledd, K.S lominska, A.Sobey, T.Sugiyama, D.Supanitsky, M.Suzuki, B.Szabelska, J.Szabelski, F.Tajima, N.Tajima, T.Tajima, Y.Takahashi, H.Takami, M.Takeda, Y.Takizawa, C.Tenzer, O.Tibolla, L.Tkachev, T.Tomida, N.Tone, F.Trillaud, R.Tsenov, K.Tsuno, T.Tymieniecka, Y.Uchihori, O.Vaduvescu, J.F.Valdes-Galicia, P.Vallani, L.Valore, G.Vankova, C.Vigorito, L.Villasenor, P.von Ballmoos, S.Wada, J.Watanabe, S.Watanabe, J.Watts Jr., M.Weber, T.J.Weiler, T.Wibig, L.Wiencke, M.Wille, J.Wilms, Z.W lodarczyk, T.Yamamoto, Y.Yamamoto, J.Yang, H.Yano, I.V.Yashin, D.Yonetoku, K.Yoshida, S.Yoshida, R.Young, A.Zamora, A.Zuccaro Marchi

Astroparticle Physics Vol. 44 page： 76-90 2013

Basic Concepts of Polarization Analysis for Neutron Chopper Spectrometer POLANO at J-PARC Reviewed

K.Ohoyama, T.Yokoo, S.Itoh, J.Suzuki, K.Iwasa, T.J.Sato, H.Kira, Y.Sakaguchi, T.Ino, T.Oku, K.Tomiyasu, M.Matsuura, H.Hiraka, M.Fujita, H.Kimura, T.Sato, J.Suzuki, H.M.Shimizu, T.Arima, M.Takeda, K.Kaneko, M.Hino, S.Muto, H.Nojiri, C.H.Lee, J.G.Park and S.Choi

J. Phys. Soc. Jpn. Vol. 82 page： SA036 2013

Magnetic Shield Design of In-situ SEOP Polarized 3He Neutron Spin Filter System Reviewed

H.Kira, Y.Sakaguchi, J.Suzuki, T.Oku, M.Nakamura, M.Arai, K.Kakurai, Y.Endo, Y.Arimoto, T.Ino, H.M.Shimizu, T.Kamiyama, K.Ohoyama, H.Hiraka, K.Tsutsumi, K.Yamada and L.-J.Chang

Physics Procedia Vol. 42 page： 200-205 2013

Rebunching Ultracold Neutrons by Magnetic Deceleration for the Neutron EDM Experiment at J-PARC

S.Imajo, Y.Iwashita, P.Geltenbort, Y.Arimoto, H.M.Shimizu, M.Kitaguchi, T.Yoshioka, Y.Seki

Proc. 4th International Particle Accelerator Conference (IPAC2013), Shanghai, China 12-17 May, 2013 page： 1187 2013

Development of longitudinal-gradient magnet for time focusing of ultra-cold neutron with anisotropic inter-pole

Yasushi Arimoto, Yoshihisa Iwashita, Tamaki Yoshioka, Masaaki Kitaguchi, Sohei Imajo, Hirohiko M. Shimizu, Koichiro Asahi, Takashi Ino, Yoshio Kamiya, Kenji Mishima, Suguru Muto, Kenji Sakai, Tatsushi Shima, Kaoru Taketani, Satoru Yamashita, Akihiro Yoshimi

IEEE Transactions on Applied Superconductivity Vol. 22 ( 3 ) page： 6156745 2012.6

Language：English

Ultra-cold neutron (UCN) is attractive for a search of the neutron electric dipole moment (nEDM). It is crucial to store UCNs with high density in a bottle for nEDM measurement apparatus. To increase the density, time focusing technique can be useful, where slow neutrons are accelerated and fast neutrons are decelerated by using magnetic potential. This device is called rebuncher. The rebuncher consists of a gradient magnet, RF coil, and neutron guide. The magnet generates a field gradient of 3.5 T/m (from 1 T to 0.2 T within 24 cm) in the longitudinal direction. By using anisotropic inter-poles, the magnet is compact and keeps the gradient uniform. The fabricated magnet showed good performance as designed. © 2012 IEEE.

DOI： 10.1109/TASC.2012.2183569

Demonstration of Focusing by a Neutron Accelerator Reviewed

Y.Arimoto, P.Geltenbort, S.Imajo, Y.Iwashita, M.Kitaguchi, Y.Seki, H.M.Shimizu, T.Yoshioka

Phys. Rev. A Vol. 86 page： 023843, 1-4 2012

Rebunching Low Energy Neutrons by Magnetic Acceleration and Deceleration

Y.Iwashita, S.Imajo, M.Kitaguchi, Y.Arimoto, Hirohiko M. Shimizu, T.Yoshioka, Y.Seki, P.Geltenbort

Proc. 3rd International Particle Accelerator Conference (IPAC2012), New Orleans, USA, 20-25 May, 2012 page： 2766-2768 2012

Present status of neutron fundamental physics at J-PARC Invited Reviewed Open Access

Yasushi Arimoto, Haruhiko Funahashi, Nao Higashi, Masahiro Hino, Katsuya Hirota, Shohei Imajo, Takashi Ino, Yoshihisa Iwashita, Ryo Katayama, Masaaki Kitaguchi, Kenji Mishima, Suguru Muto, Hideyuki Oide, Hidetoshi Otono, Yoshichika Seki, Tatsushi Shima, Hirohiko M. Shimizu, Kaoru Taketani, Takahiro Yamada, Satoru Yamashita, Tamaki Yoshioka

Progress of Theoretical and Experimental Physics Vol. 2012 ( 1 ) page： 02B007 2012

Language：English Publishing type：Research paper (scientific journal)

© The Author(s) 2012. A neutron beamline for the study of fundamental physics has been constructed at the spallation neutron source of the Japan Proton Accelerator Research Complex (J-PARC). In-flight measurement of the neutron lifetime and the development of the transport optics of ultracold neutrons are in progress. The present status of the beamline and these experiments is reported.

DOI： 10.1093/ptep/pts075

Variable Permanent Magnet Multipoles Reviewed

Y.Iwashita, M.Yamada, S.Ushijima, Y.Fuwa, Y.Nasu, H.Tongu, M.Masuzawa, H.M.Shimizu

IEEE Trans. Appl. Supercond. Vol. 22 page： 4000905 2012

A Compact SEOP 3He Neutron Spin Filter with AFP-NMR Reviewed

T.Ino, Y.Arimoto, H.M.Shimizu, Y.Sakaguchi, K.Sakai, H.Kira, T.Shinohara, T.Oku, J.-I.Suzuki, K.Kakurai, L.-J.Chang

Journal of Physics Conf. Ser. Vol. 340 page： 042006 2012

Development of Polarized Xe Gas Target for Neutron Experiment Reviewed

K.Sakai, T.Oku, T.Shinohara, H.Kira, M.Ooi, F.Maekawa, K.Kakurai, T.Ino, Y.Arimoto, H.M.Shimizu, Y.Sakaguchi, J.Suzuki, K.Ohoyama and L.J.Chang

Journal of Physics Conf. Ser. Vol. 340 page： 012037 2012

Demonstration of Optical Thickness Measurement Using Multilayer Cold Neutron Interferometer Reviewed

Y.Seki, J.Uda, H.Funahashi, M.Kitaguchi, M.Hino, Y.Otake, K.Taketani and H.M.Shimizu

Journal of Physics Conf. Ser. Vol. 340 page： 012039 2012

Development of Longitudinal-gradient Magnet for Time Focusing of Ultracold Neutron with Anisotropic Interpole Reviewed

Y.Arimoto, Y.Iwashita, T.Yoshioka, M.Kitaguchi, S.Imajo, H.M.Shimizu, K.Asahi, T.Ino, Y.Kamiya, K.Mishima, S.Muto, K.Sakai, T.Shima, K.Taketani, S.Yamashita and A.Yoshimi

IEEE Trans. Appl. Supercond. Vol. 22 page： 6156745 2012

A compact SEOP He-3 neutron spin filter with AFP NMR Reviewed

Takashi Ino, Yasushi Arimoto, Hirohiko M. Shimizu, Yoshifumi Sakaguchi, Kenji Sakai, Hiroshi Kira, Takenao Shinohara, Takayuki Oku, Jun-ichi Suzuki, Kazuhisa Kakurai, Lieh-Jeng Chang

5TH EUROPEAN CONFERENCE ON NEUTRON SCATTERING Vol. 340 2012

Language：English Publishing type：Research paper (international conference proceedings) Publisher：IOP PUBLISHING LTD

We developed AFP NMR in an aluminum container for polarized noble gas nuclei. The radio frequency magnetic field inside the aluminum container was designed from computer simulations. The polarization loss by the AFP spin flip of He-3 was measured to be as low as 3.8 x 10(-4). With this technique, a compact in-situ polarizing He-3 neutron spin filter with AFP NMR is demonstrated.

DOI： 10.1088/1742-6596/340/1/012006

Recovery of reduced fringe visibility due to finite crossing angle between two paths of a neutron interferometer Reviewed

Kaoru Taketani, Masahiro Hino, Hirohiko M. Shimizu

PHYSICA B-CONDENSED MATTER Vol. 406 ( 12 ) page： 2377 - 2380 2011.6

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER SCIENCE BV

In the present study the restoration of interference fringes, whose visibility is degraded by the presence of a finite crossing angle between the two paths of a neutron interferometer, is experimentally demonstrated. A crossing angle of 1.0 mu rad was introduced using an optical component consisting of a magnetic multilayer mirror, a wedge-shaped gap layer, and a nonmagnetic multilayer mirror. To restore the interference fringes, magnetic gradients of 0.64 G/cm were applied using two electro-quadrupole magnets. (C) 2010 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.physb.2010.11.090

A compact TOF-SANS using focusing lens and very cold neutrons Reviewed

Masako Yamada, Yoshihisa Iwashita, Toshiji Kanaya, Norifumi L. Yamada, Hirohiko M. Shimizu, Kenji Mishima, Masahiro Hino, Masaaki Kitaguchi, Katsuya Hirota, Peter Geltenbort, Bruno Guerard, Giuliana Manzin, Ken Anderson, Jyotsana Lal, John M. Carpenter, Markus Bleuel, Shane J. Kennedy

PHYSICA B-CONDENSED MATTER Vol. 406 ( 12 ) page： 2453 - 2457 2011.6

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER SCIENCE BV

We are developing a high-resolution small angle neutron scattering instrument for very cold neutrons (VCN). Our concept includes a magnetic lens for focusing of the beam at the detector plane. The lens consists of one permanent-magnet sextupole array rotating outside another stationary sextupole array, to focus a pulsed white beam of neutrons. Thus the instrument operates in time of flight mode. The prototype magnetic lens has a bore of 15 mm diameter and length of 66 mm, producing a magnetic field gradient oscillating from 1.5 x 10(4) to 5.9 x 10(4) T/m(2), with frequency <= 25 Hz. A torque-canceling magnet around the lens suppresses the torque of rotation from the outer array to 1/3.
We have demonstrated the performance of the lens, over wavelength range from 30 to 48 angstrom, on the PF2-VCN beam line at the Institut Laue-Langevin, France. The focused beam image was the same size as the source, without chromatic aberration, with focal length of 1.14 m. We also studied the performance of this configuration for high-resolution SANS, in a compact geometry (just 5 m long). The measurable q range of this system was 0.009 angstrom(-1) <= q <= 0.3 angstrom(-1) or 0.004 angstrom(-1) <= q <= 0.08 angstrom(-1) for sample to detector distances of 100 and 465 mm, respectively. Here, we present the results of our lens characterization study along with the SANS results on a tri-block copolymer (F127 Pluronic) and on a stretched polymer blend (with the Shish-Kebab structure). (C) 2010 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.physb.2010.12.002

Polarization of very cold neutron using a permanent magnet quadrupole Reviewed

Tamaki Yoshioka, Kenji Mishima, Takashi Ino, Kaoru Taketani, Suguru Muto, Takahiro Morishima, Hirohiko M. Shimizu, Takayuki Oku, Junichi Suzuki, Takenao Shinohara, Kenji Sakai, Hiromi Sato, Katsuya Hirota, Yoshie Otake, Masaaki Kitaguchi, Masahiro Hino, Yoshichika Seki, Yoshihisa Iwashita, Masako Yamada, Masahiro Ichikawa, Takanori Sugimoto, Shinsuke Kawasaki, Sachio Komamiya, Hidetoshi Otono, Yoshio Kamiya, Satoru Yamashita, Peter Geltenbort

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT Vol. 634 ( 1 SUPPL. ) page： S17 - S20 2011.4

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER SCIENCE BV

For the future fundamental physics experiments by using cold neutrons, we are developing a device which can measure the neutron polarization degree by accuracy significantly below 10(-3). A quadrupole magnet is one of the promising candidate to measure the neutron polarization degree by such extremely high precision. We have performed a polarization experiment by using the quadrupole magnets at the Very Cold Neutron (VCN) port of the PF-2 in the Institute Laue-Langevin (ILL). As a result, we obtained the polarization degree P with very high accuracy P=0.9994 +/- 0.0001(stat.) +/- 0.0003(syst.), which meet our requirement significantly. (C) 2010 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2010.05.029

Development of thin film neutron focusing lenses Reviewed

Takashi Ino, Takenao Shinohara, Tomohiro Adachi, Katsuya Hirota, Masahiro Hino, Takayuki Oku, Kaoru Taketani, Kenji Mishima, Tamaki Yoshioka, Yasushi Arimoto, Suguru Muto, Jun-ichi Suzuki, Hirohiko M. Shimizu

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT Vol. 634 ( 1 SUPPL. ) page： S94 - S96 2011.4

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER SCIENCE BV

We have developed thin film Fresnel lenses made of a hydrogen-free amorphous polymer for neutron focusing purposes. A neutron beam test showed the strong focusing of a cold neutron beam, and an increase of the neutron intensity was observed to be more than 50 times. (C) 2010 Elsevier BM. All rights reserved.

DOI： 10.1016/j.nima.2010.05.046

Parametric resonance enhancement in neutron interferometry and application for the search for non-Newtonian gravity Reviewed Open Access

Vladimir Gudkov, Hirohiko M. Shimizu, Geoffrey L. Greene

PHYSICAL REVIEW C Vol. 83 ( 2 ) 2011.2

Language：English Publishing type：Research paper (scientific journal) Publisher：AMER PHYSICAL SOC

The parametric resonance enhancement of the phase of neutrons due to non-Newtonian anomalous gravitation is considered. The existence of such resonances is confirmed by numerical calculations. A possible experimental scheme for observing this effect is discussed based on an existing neutron interferometer design.

DOI： 10.1103/PhysRevC.83.025501

A Transport Optics for Pulsed Ultracold Neutrons Reviewed

H.M.Shimizu, Y.Iwashita, M.Kitaguchi, K.Mishima and T.Yoshioka

Nucl. Instrum. Methods A Vol. 634 page： 25-27 2011

Multilayer Neutron Interferometer with Complete Path Separation Reviewed Open Access

Yoshichika Seki, Haruhiko Funahashi, Masaaki Kitaguchi, Masahiro Hino, Yoshie Otake, Kaoru Taketani, Hirohiko M. Shimizu

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN Vol. 79 ( 12 ) 2010.12

Language：English Publishing type：Research paper (scientific journal) Publisher：PHYSICAL SOC JAPAN

We have developed a new multi layer cold-neutron interferometer using a pair of beam splitting etalons (BSEs) with an air gap of 189 mu m in spacing. This is the first multilayer neutron interferometer that separates two paths from each other completely without an overlap. Clear interference fringes with a contrast of 67% have been observed using a monochromatic cold-neutron beam with a wavelength of 0.88 nm.

DOI： 10.1143/JPSJ.79.124201

Development of a triplet magnetic lens system to focus a pulsed neutron beam Reviewed

Takayuki Oku, Hiroshi Kira, Takenao Shinohara, Shin-ichi Takata, Masatoshi Arai, Jun-ichi Suzuki, Hirohiko M. Shimizu

INTERNATIONAL CONFERENCE ON NEUTRON SCATTERING 2009 Vol. 251 ( 1 ) 2010

Language：English Publishing type：Research paper (international conference proceedings) Publisher：IOP PUBLISHING LTD

A triplet magnetic lens system composed of three sextupole-magnets and two spin flippers was constructed to focus pulsed neutrons in a wide wavelength range with same focal lengths. In this study, we performed a pulsed neutron beam focusing experiment with the system. The design of the system and the experimental results are shown and discussed.

DOI： 10.1088/1742-6596/251/1/012078

Neutron Reflectometry for Observation of Machined Surface Roughness Reviewed

Kazuko Inoue, Tomoko Hirayama, Tomoki Uno, Toru Ebisawa, Kazuaki Ikeda, Hisayoshi Honda, Hirohiko Shimizu

JAPANESE JOURNAL OF APPLIED PHYSICS Vol. 48 ( 12 ) 2009.12

Language：English Publishing type：Research paper (scientific journal) Publisher：JAPAN SOC APPLIED PHYSICS

Neutron reflectometry was applied for the characterization of machined roughness on iron surfaces, including a buried solid-solid contacting surface. The observed distribution of the reflected neutron beam could be explained using a structure factor estimated from the Fourier transform of the physical roughness measured by a contact-type roughness gauge, particularly in the case of a periodic surface structure. In the case of random roughness, the accumulation of beams specularly reflected from every small local region of the surface gave a better explanation of the broad distribution of the scattered beam, where each local region was assumed to be flat and differently inclined relative to the incident beam direction. When the surface was buried beneath another material, the width of the distribution of the reflected beam became slightly wider than that in air. Although neutron reflectometry for the characterization of surface roughness has various limitations, it is still an effective tool for nondestructively observing the surface roughness at a buried contacting surface. (C) 2009 The Japan Society of Applied Physics

DOI： 10.1143/JJAP.48.126504

Neutron interferometric search for short-range gravity Reviewed

Vladimir Gudkov, Geoffrey L. Greene, Hirohiko M. Shimizu

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT Vol. 611 ( 2-3 ) page： 153 - 156 2009.12

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER SCIENCE BV

We discuss the coherent nature of neutron interactions and properties of low-energy neutrons with the view of the possibility to search for "anomalous" forces with ranges from nuclear sizes up to the macroscopic scale. (C) 2009 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2009.07.042

Highly polarized very cold neutrons through a permanent magnet quadrupole Reviewed

Kaoru Taketani, Kenji Mishima, Takashi Ino, Tamaki Yoshioka, Suguru Muto, Takahiro Morishima, Hirohiko M. Shimizu, Takayuki Oku, Junichi Suzuki, Takenao Shinohara, Kenji Sakai, Hiromi Sato, Katsuya Hirota, Yoshie Otake, Masaaki Kitaguchi, Masahiro Hino, Yoshichika Seki, Yoshihisa Iwashita, Masako Yamada, Masahiro Ichikawa, Takanori Sugimoto, Shinsuke Kawasaki, Sachio Komamiya, Yoshio Kamiya, Hidetoshi Otono, Satoru Yamashita, Peter Geltenbort

Physica B: Condensed Matter Vol. 404 ( 17 ) page： 2643 - 2645 2009.9

Publishing type：Research paper (scientific journal)

We obtained highly polarized very cold neutrons through a quadrupole magnet with a large aperture. When neutrons go through a quadrupole magnet, parallel-spin neutrons are attracted to the magnet axis and anti-parallel-spin neutrons are repelled off the axis. Therefore, the neutrons through a sufficiently long quadrupole magnet have completely parallel-spin. At the downstream of the quadrupole magnet, we placed another quadrupole magnet to divide neutrons into two regions depending on their spin directions. We obtained the neutron polarization from the integrated count of the two regions and found it was 99.88±0.09 (stat.)±0.05 (syst.)%. © 2009 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.physb.2009.06.045

Development of modulating permanent magnet sextupole lens for focusing of pulsed cold neutrons Reviewed

Masako Yamada, Yoshihisa Iwashita, Masahiro Ichikawa, Takanori Sugimoto, Hiromu Tongu, Hiroshi Fujisawa, Hirohiko M. Shimizu, Takashi Ino, Kenji Mishima, Kaoru Taketani, Tamaki Yoshioka, Suguru Muto, Takahiro Morishima, Takayuki Oku, Jun ichi Suzuki, Takenao Shinohara, Kenji Sakai, Hiromi Sato, Katsuya Hirota, Yoshie Otake, Yoshichika Seki, Shinsuke Kawasaki, Sachio Komamiya, Yoshio Kamiya, Hidetoshi Otono, Satoru Yamashita, Peter Geltenbort

Physica B: Condensed Matter Vol. 404 ( 17 ) page： 2646 - 2651 2009.9

Publishing type：Research paper (scientific journal)

Modulating permanent magnet sextupole lens (PMSx) for focusing pulsed cold neutrons is under development. The synchronized modulation of its field gradient suppresses the chromatic aberration which arises from the Time Of Flight method. The strength of the magnetic field, the torque, and the rise of temperature during its operation are studied on a fabricated prototype. Experiments on focusing pulsed very cold neutrons (VCN) at ILL (Institute of Laue Langevin, France) were carried out and VCN with around λ=40 Å were focused by the PMSx at a focal length of about 0.5 m. The experimental results are presented in conjunction with the principle of the neutron focusing and the modulating method of the focal strength of permanent magnet lens with the double ring structure. © 2009 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.physb.2009.06.132

Design of neutron beamline for fundamental physics at J-PARC BL05 Reviewed

Kenji Mishima, Takashi Ino, Kenji Sakai, Takenao Shinohara, Katsuya Hirota, Kazuaki Ikeda, Hiromi Sato, Yoshie Otake, Hitoshi Ohmori, Suguru Muto, Norio Higashi, Takahiro Morishima, Masaaki Kitaguch, Masahiro Hino, Haruhiko Funahashi, Tatsushi Shima, Jun-ichi Suzuki, Koji Niita, Kaoru Taketani, Yoshichika Seki, Hirohiko M. Shimizu

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT Vol. 600 ( 1 ) page： 342 - 345 2009.2

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER SCIENCE BV

A new beamline for a fundamental physics experiment is under construction at BL05 port in the Materials and Life Science Facility (MLF) at Japan Proton Accelerator Research Complex (J-PARC); this beamline is designed using novel techniques of neutron optics and it is termed "Neutron Optics and Physics." The beam from the moderator is deflected by multi-channel supermirrors and split into three branches for individual experiments. In this study, we have optimized the design of the beam optics and shields using the Monte Carlo simulation package PHITS. The neutron fluxes of beams are expected to be 9.2 x 10(5)/cm(2)/mu str/s/MW, 1.2 x 10(9)/cm(2)/s/MW, and 4.0 x 10(8)/cm(2)/s/MW, with polarization of 99.8%. (C) 2008 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2008.11.087

Pulsed neutron beam control using a magnetic multiplet lens Reviewed

Takayuki Oku, Takenao Shinohara, Jun-ichi Suzuki, Roger Pynn, Hirohiko M. Shimizu

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT Vol. 600 ( 1 ) page： 100 - 102 2009.2

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER SCIENCE BV

As a magnetic neutron lens based on a sextupole magnet to focus neutrons has chromatic aberration, it has been proposed that the chromatic aberration can be compensated in the pulsed neutron beam focusing by combining the focusing and defocusing functions of the multiplet magnetic lens system synchronously with time-of-flight (TOF) of neutrons. In this study, we performed numerical simulations on the multiplet magnetic lens system to investigate how a pulsed neutron beam can be controlled on the basis of the TOF method. It was then confirmed that the chromatic aberration can be compensated and the focal condition can be maintained over a certain A-range by utilizing plural magnetic lenses in series and choosing the focusing and defocusing function of each magnetic lens synchronously with TOF of neutrons. (C) 2008 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2008.11.055

A CCD-based Pixel Detector with Micron Spatial Resolution for Ultra Cold Neutrons Reviewed

Go Ichikawa, Shinsuke Kawasaki, Sachio Komamiya, Yoshio Kamiya, Tomoyuki Sanuki, Hirohiko M. Shimizu, Masahiro Hino, Masaaki Kitaguchi

2009 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD, VOLS 1-5 page： 1619 - + 2009

Language：English Publishing type：Research paper (international conference proceedings) Publisher：IEEE

We have developed a pixel detector for ultra-cold neutrons using a commercial CCD. In order to detect neutrons, a thin neutron converting layer is directly formed on the CCD surface. The detection efficiencies for cold, very-cold and ultra-cold neutrons are measured to be 1.7%, 4.05 +/- 0.08 +/- 0.12% and 40.6 +/- 0.7 +/- 2.8%, respectively. The spatial resolutions were measured to be 2.9 +/- 0.1 mu m for horizontal direction and 4.4 +/- 0.2 mu m for vertical direction. The vertical and horizontal directions are determined by the charge transfer mechanism of CCDs. The details of the pixel detector and its performance tests are described.

DOI： 10.1109/NSSMIC.2009.5402255

Slow Neutron Optics Reviewed

Hirohiko M. Shimizu

TRANSACTIONS OF THE MATERIALS RESEARCH SOCIETY OF JAPAN, VOL 33, NO 3 Vol. 33 ( 3 ) page： 541 - 545 2008

Language：English Publishing type：Research paper (international conference proceedings) Publisher：MATERIALS RESEARCH SOCIETY JAPAN-MRS-J

We survey the current status of reflective neutron optical devices, compound refractive and magnetic ones for enhancing the effectiveness of the beam utilization to extract physics information of samples.

Highly polarized cold neutron beam obtained by using a quadrupole magnet Reviewed

Takayuki Oku, Satoru Yamada, Takenao Shinohara, Jun-ichi Suzuki, Kenji Mishima, Katsuya Hirota, Hiromi Sato, Hirohiko M. Shimizu

PHYSICA B-CONDENSED MATTER Vol. 397 ( 1-2 ) page： 188 - 191 2007.7

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER SCIENCE BV

We performed a cold neutron polarization experiment using a polarization device based on a quadrupole magnet. By passing through the aperture of the quadrupole magnet, positive and negative polarity neutrons are accelerated in opposite directions and spatially separated due to the magnetic field gradient. Then, we extracted the one-spin component and analyzed the polarization degree by using a sextupole magnet and position-sensitive detector. As a result, very high neutron polarization degree P = 0.9993 +/- 0.0025 was obtained. Advantages of the quadrupole magnet as the neutron polarization device and its application to neutron scattering experiments are discussed. (c) 2007 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.physb.2007.02.055

Moire Fringes in a Neutron Spin Interferometer

Taketani Kaoru, Seki Yoshichika, Funahashi Haruhiko, HINO Masahiro, KITAGUCHI Masaaki, OTAKE Yoshie, SHIMIZU Hirohiko M.

Journal of the Physical Society of Japan Vol. 76 ( 6 ) page： "64008 - 1"-"64008-7" 2007.6

Publisher：一般社団法人日本物理学会

We have revealed the criterion to observe moire fringes in a neutron spin interferometry. In former studies using wave front division, neutron beam had to be collimated by fine slits. On the other hand, we have succeeded to observe moire fringes with divergence angle of 8.3 mrad using spin polarization division. A model based on partial coherence theory has been developed and verified experimentally. These results will be the basis for neutron wave front manipulation technique using magnetic birefringence.

Moiré Fringes in a Neutron Spin Interferometer

Taketani Kaoru, Seki Yoshichika, Funahashi Haruhiko, Hino Masahiro, Kitaguchi Masaaki, Otake Yoshie, Shimizu Hirohiko M.

Journal of the Physical Society of Japan Vol. 76 ( 6 ) page： 064008 - 064008 2007.6

Language：English Publishing type：Research paper (scientific journal) Publisher：THE PHYSICAL SOCIETY OF JAPAN

We have revealed the criterion to observe moiré fringes in a neutron spin interferometry. In former studies using wave front division, neutron beam had to be collimated by fine slits. On the other hand, we have succeeded to observe moiré fringes with divergence angle of 8.3 mrad using spin polarization division. A model based on partial coherence theory has been developed and verified experimentally. These results will be the basis for neutron wave front manipulation technique using magnetic birefringence.

DOI： 10.1143/JPSJ.76.064008

Low energy particle detector using a superconducting transition edge sensor Reviewed

Masashi Ohno, Hiromi Sato, Kenji Mishima, Tokihiro Ikeda, Hirohiko M. Shimizu

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY Vol. 17 ( 2 ) page： 328 - 331 2007.6

Language：English Publishing type：Research paper (scientific journal) Publisher：IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC

Precise measurement of neutron beta decay tests predictions of the Standard Model of electroweak interaction. The coefficient a of the antineutrino/electron angular correlation is determined by measuring the energy spectrum of the recoil protons generated in the neutron beta decay. A proton spectrometer required for this measurement demands high detection efficiency, high energy resolution and a large detection area. We have begun development of a Transition Edge Sensor (TES) microcalorimeter for use as a low energy particle detector. To realize the large detection area we have designed a pixelated TES array incorporating a parallel biasing scheme. Our TES device consists of 4-pixels using a Au/Ti/Au trilayer film adjusted to a superconducting transition temperature of Tc similar to 380 mK. This temperature is convenient for use in a 3He cryostat with a pulse tube refrigerator. The Ail films improve thermal conductivity, thereby reducing position dependent effects and allow an increased detector area.

DOI： 10.1109/TASC.2007.898057

Wide-q observation from 10(-4) to 2.0 A(-1) using a focusing and polarized neutron small-angle scattering spectrometer, SANS-J-II Reviewed Open Access

Hiroki Iwase, Satoshi Koizumi, Jun-ichi Suzuki, Takayuki Oku, Hajime Sasao, Hirokazu Tanaka, Hirohiko M. Shimizu, Takeji Hashimoto

JOURNAL OF APPLIED CRYSTALLOGRAPHY Vol. 40 ( SUPPL. 1 ) page： S414 - S417 2007.4

Language：English Publishing type：Research paper (scientific journal) Publisher：BLACKWELL PUBLISHING

In order to extend an upper q-limit [q is the magnitude of the scattering vector q, defined by q = (4 pi/lambda)sin theta, where lambda and 2 theta are the wavelength and the scattering angle, respectively], high-angle He-3 sub-detectors were installed on a focusing and polarized neutron small-angle scattering spectrometer (SANS-J-II) at JRR-3, Tokai, Japan. Consequently, the upper q-limit was improved from 0.2 to 2.0 angstrom(-1). To quantitatively discriminate spin incoherent scattering from hydrogen or to perform nuclear spin polarization contrast variation, a remanent supermirror analyser is also available on the high-angle sub-detector. By combining a focusing ultra-small-angle scattering, realised by compound and/or magnetic lens and high-resolution area detector, SANS-J-II is able to cover from 3 x 10(-4) to 2.0 angstrom(-1) (four orders of magnitude of q), which benefits investigation of hierarchically ordered systems, found widely in hard, soft and bio-materials.

DOI： 10.1107/S0021889807006280

Focusing and polarized neutron small-angle scattering spectrometer (SANS-J-II). The challenge of observation over length scales from an angstrorm to a micrometre Reviewed Open Access

Satoshi Koizumi, Hiroki Iwase, Jun-ichi Suzuki, Takayuki Oku, Ryuhei Motokawa, Hajime Sasao, Hirokazu Tanaka, Daisuke Yamaguchi, Hirohiko M. Shimizu, Takeji Hashimoto

JOURNAL OF APPLIED CRYSTALLOGRAPHY Vol. 40 ( SUPPL. 1 ) page： S474 - S479 2007.4

Language：English Publishing type：Research paper (scientific journal) Publisher：BLACKWELL PUBLISHING

SANS-J (a pinhole small-angle neutron scattering spectrometer at research reactor JRR3, Tokai, Japan) was reconstructed as a focusing and polarized neutron small-angle scattering spectrometer (SANS-J-II). By employing focusing lenses of a biconcave MgF2 crystal or of a sextupole permanent magnet and a high-resolution photomultiplier, the minimum accessible magnitude of the scattering vector q(min) was improved from 3 x 10(-3) angstrom(-1) to an ultra-small-angle scattering (USAS) of 3 x 10(-4) angstrom(-1). Compared with a Bonse-Hart double-crystal method, the advantages of focusing USAS are the efficient detection of anisotropic USAS with an area detector, an improvement in q resolution Delta q/q at conventional magnitudes of the scattering vector q similar to 10(-3) angstrom(-1) and a gain in neutron flux in the conventional q region of q similar to 10(-3) angstrom(-1).

DOI： 10.1107/S0021889807014392

A focusing-geometry small-angle neutron scattering instrument with a magnetic neutron lens Reviewed Open Access

Takayuki Oku, Hiroki Iwase, Takenao Shinohara, Satoru Yamada, Katsuya Hirota, Satoshi Koizumi, Jun-ichi Suzuki, Takeji Hashimoto, Hirohiko M. Shimizu

JOURNAL OF APPLIED CRYSTALLOGRAPHY Vol. 40 ( SUPPL. 1 ) page： S408 - S413 2007.4

Language：English Publishing type：Research paper (scientific journal) Publisher：BLACKWELL PUBLISHING

We have constructed a focusing-geometry small-angle neutron scattering (FSANS) instrument, SANS-J-II, with two kinds of neutron focusing device: a series of compound refractive lenses made of MgF2 and a magnetic neutron lens based on an extended Halbach-type sextupole magnet. In this study, we investigated the performance of the FSANS instrument with the magnetic neutron lens. The intensity distribution of a direct neutron beam focused on the detector plane by the magnetic neutron lens had a ratio of the peak height to the background level of similar to 6 x 10(4) for a polarized neutron beam with a polarization degree of similar to 0: 99. It is found that a minimum value of the measurable q range [where q is the modulus of the scattering vector and is defined as q = (4 pi / lambda) sin(theta /2), where theta is the scattering angle and lambda is the neutron wavelength], q(min), of 6.5 x 10(-4) angstrom(-1) can be achieved by the FSANS instrument with the magnetic neutron lens using neutrons with lambda = 6.6 angstrom and Delta lambda/lambda = 0.13 for the full width at half maximum.

DOI： 10.1107/S0021889807003822

X-ray detection using superconducting tunnel junction shaped normal-distribution-function Reviewed

Tohru Taino, Tomohiro Nishihara, Koichi Hoshino, Hiroaki Myoren, Hiromi Sato, Hirohiko M. Shimizu, Susumu Takada

IEICE TRANSACTIONS ON ELECTRONICS Vol. E90C ( 3 ) page： 566 - 569 2007.3

Language：English Publishing type：Research paper (scientific journal) Publisher：IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG

A normal-distribution-function-shaped superconducting tunnel junction (NDF-STJ) which consists of Nb/Al-AlOx/Al/Nb has been fabricated as an X-ray detector. Current - voltage characteristics were measured at 0.4 K using three kinds of STJs, which have the dispersion parameters sigma of 0.25, 0.45 and 0.75. These STJs showed very low subgap leakage current of about 5 nA. By irradiating with 5.9 keV X-rays, we obtained the spectrum of these NDF-STJs. They showed good energy resolution with small magnetic fields of below 3 mT, which is about one-tenth of those for conventional-shaped STJs.

DOI： 10.1093/ietele/e90-c.3.566

Development of Analog-to-Digital Converters toward Multi-Channel Detector System

YAMAZAKI Takuro, MIYAZIMA Shigeyuki, SATO Hiromi, SHIMIZU Hirohiko, FUJIMAKI Akira

IEICE technical report Vol. 106 ( 503 ) page： 7 - 12 2007.1

Publisher：The Institute of Electronics, Information and Communication Engineers

We have proposed a Cryostat-integrated Superconducting Tunneling Junction (STJ), Single Flux Quantum Analog to Digital (SFQ-A/D) converter. The sampling frequency of the A/D converter was measured to be 12.7GHz with an SNR of 23.7dB. The integration of the STJ and the A/D converter makes possible the development of a multi-channel detector system that can be used in the detection of X-rays and THz electromagnetic waves with higher efficiency. The detection of the STJ is accompanied with the formation of magnetic field in the Cryostat. This magnetic field is a major drawback to the proper functioning of the SFQ. We have implemented magnetic shielding in the Cryostat which has resulted into the normal functioning of the SFQ-A/D converter.

Small-angle neutron scattering (SANS) and dynamic light scattering (DLS) analyses of the initial aggregation process of tau by oxidative stress Reviewed

Sachio Naito, Susumu Ikeda, Hirohiko Shimizu, Hideki Mochizuki, Toru Yasuda, Yoshikuni Mizuno, Michihiro Furusaka, Satoru Fujiwara, Junichi Suzuki, keiji Wada

NEUROSCIENCE RESEARCH Vol. 58 page： S176 - S176 2007

Terahertz Imaging with a Superconducting Detector Array

ARIYOSHI Seiichiro, OTANI Chiko, DOBROIU Adrian, MATSUO Hiroshi, SATO Hiromi, TAINO Tohru, KAWASE Kodo, SHIMIZU Hirohiko M.

IEICE technical report Vol. 106 ( 403 ) page： 59 - 63 2006.12

Publisher：The Institute of Electronics, Information and Communication Engineers

Terahertz radiation is the electromagnetic range between radio waves and light waves. The imaging technology in this range is expected to generate many novel applications such as nondestructive inspection in commercial industries and security systems, medical diagnosis and astronomy. However, detector arrays for terahertz imaging are still under development, and large-scale and high-sensitivity detector arrays are acutely needed in many fields. We have designed, fabricated, and characterized a superconducting detector array using superconducting tunnel junctions (STJs) for terahertz imaging applications. The detector is composed of linearly distributed junctions placed on a superconducting microstrip line and is integrated on two wings of a log-periodic antenna. It is based on the photon-assisted tunneling process. In this paper, we explain the detector outline, performances and future prospects, and demonstrate terahertz imaging using the STJ linear array.

Superconducting Tunnel Junction with Substrate Absorber for THz waves Detector

TAINO Tohru, ISHII Hirokazu, YOSHIMURA Shota, MYOREN Hiroaki, TAKADA Susumu, OTANI Chiko, ARIYOSHI Seiichiro, SATO Hiromi, SHIMIZU Hirohiko, KAWASE Kodo

IEICE technical report Vol. 106 ( 403 ) page： 53 - 57 2006.12

Publisher：The Institute of Electronics, Information and Communication Engineers

Terahertz electromagnetic waves (THz waves) are very attractive features for various fields such as engineering, medical and sciences. We have developed superconducting tunnel junctions (STJs) for THz waves detector. Our proposed detectors utilize a substrate of the STJ. This is called phonon-mediated method. In this paper, we introduce the results of STJ for THz waves detector with phonon-mediate method.

Thermal neutron refraction by material prism Reviewed

Takenao Shinohara, Katsuya Hirota, Tomohiro Adachi, Kazuaki Ikeda, Hirohiko M. Shimizu, Jun-ichi Suzuki, Takayuki Oku

PHYSICA B-CONDENSED MATTER Vol. 385-86 page： 1232 - 1235 2006.11

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER SCIENCE BV

Neutron refractive optics is a powerful tool for beam focusing due to its large effective aperture compared to reflective optics. Because neutron refraction angle decreases with shorter wavelengths, the application of refractive optics has been restricted to the cold neutron range. To expand the applicable wavelength range, we have developed a new refractive optics using an amorphous perfluoropolymer. This refractive optics is composed of several hundred thin sheets, each of which has a large number of grooves on the top surface. The refraction experiment was performed at the H-8 beam port of KENS, and it was confirmed that the thermal neutron beam can be refracted using this material prism. (c) 2006 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.physb.2006.05.418

Moire fringes of cold neutron with large divergence angle Reviewed

Kaoru Taketani, Haruhiko Funahashi, Yoshichika Seki, Masahiro Hino, Masaaki Kitaguchi, Yoshie Otake, Hirohiko M. Shimizu

PHYSICA B-CONDENSED MATTER Vol. 385-86 page： 1222 - 1224 2006.11

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER SCIENCE BV

Moire fringes were observed as a bright and high-contrast image using a. neutron spin interferometer with a relatively divergent cold neutron beam at the MINE2 beam line of JRR-3M. The two spin states were selectively deflected with the relative angle in the range of 92-184 nrad on transmission through the magnetic field gradient in the range of 3.2-6.4 G/cm produced by a 5 cm long quadrupole electromagnet. We analyzed the result with a first-order calculation taking into account the finite beam divergence and found that the beam divergence is required to be less than the angular separation of individual Moire loci, for the observation of Moire fringes, and is not required to be less than the angular separation of the two beam paths. (c) 2006 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.physb.2006.05.412

Development of neutron Anger-camera detector based on flatpanel PMT Reviewed

Katsuya Hirota, Setsuo Satoh, Kenji Sakai, Takenao Shinohara, Kazuaki Ikeda, Kenji Mishima, Satoru Yamada, Takayuki Oku, Jun-ichi Suzuki, Michihiro Furusaka, Hirohiko M. Shimizu

PHYSICA B-CONDENSED MATTER Vol. 385-86 page： 1297 - 1299 2006.11

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER SCIENCE BV

A neutron scintillating detector and its data taking system have been developed for neutron scattering measurement. A 64-channel flatpanel photomultiplier is used for the Anger-camera method. The detection efficiency of gamma-ray background is very low in the use of the ZnS/(LiF)-Li-6 scintillator. The spatial resolution is less than 1 mm. The effective area of this detector is around 25 cm(2), and it is easy to expand it to a larger area with small dead space using the multi-photomultiplier tubes system. The fast DAQ system has 10-bit 100 MHz flash ADCs, FPGA chips and USB2.0 device. (c) 2006 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.physb.2006.06.058

Development of a multichannel parabolic guide for thermal neutron beam focusing Reviewed

Satoru Yamada, Takenao Shinohara, Hajime Sasao, Takayuki Oku, Jun-ichi Suzuki, Hideaki Matsue, Hirohiko M. Shimizu

PHYSICA B-CONDENSED MATTER Vol. 385-86 page： 1243 - 1246 2006.11

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER SCIENCE BV

We have developed a multichannel parabolic guide for thermal neutron beam focusing. The guide was designed with multichannel structure, seven channels in the present case, to focus a neutron beam with wide cross section effectively. The multichannel structure is made with parabolically bent NiC/Ti supermirrors with critical reflection angles in = 3.0 and 3.6 times as much as that of nickel and thickness of 0.55 mm. The guide consists of two focusing devices with each length of 900 mm, which are separated by a gap of 150 mm for neutron beta decay experiments. The focal length of the guide is 995 mm away from the exit of the guide. The cross section of the guide is 90 x 20 mm(2) at the entrance and 52.3 x 12.1 mm(2) at the exit. The guide was installed at a thermal neutron beam line for neutron-induced prompt gamma-ray analysis (PGA) of JRR-3M in JAEA with straight supermirror guides with in = 3.0. Focusing properties of the parabolic guide were measured at the focal point with a CCD imaging system and we obtained a gain of 9.6 and 4.1 in peak flux compared with those in cases of using the vacuum tube and the straight guide, respectively. The parabolic guide has been successfully used to enhance the efficacy of PGA and have also applied to neutron beta decay experiments. (c) 2006 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.physb.2006.05.420

Development of measurement system of neutron beta decay Reviewed

Kenji Mishima, Satoru Yamada, Hiromi Sato, Katsuya Hirota, Takenao Shinohara, Takahiro Morishima, Jun-ichi Suzuki, Takayuki Oku, Hirohiko M. Shimizu

PHYSICA B-CONDENSED MATTER Vol. 385-86 page： 1219 - 1221 2006.11

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER SCIENCE BV

Precise measurement of neutron beta decay allows determining the coupling constant of weak interaction independent of any nuclear structure. We have developed measurement system of neutron beta decay at a thermal neutron beamline in JRR-3, JAEA. By using coincidence technique of two kinds of detectors, we have succeeded in detecting the signal of neutron beta decay with S/N of 0.63 aud count rate of 0.40cps. (c) 2006 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.physb.2006.05.414

A magnetic neutron lens based on an extended Halbach-type permanent sextupole magnet Reviewed

Takayuki Oku, Satoru Yamada, Hajime Sasao, Jun-ichi Suzuki, Takenao Shinohara, Katsuya Hirota, Kazuaki Ikeda, Tsuyosi Tsuzaki, Yoshiaki Kiyanagi, Michihiro Furusaka, Hirohiko M. Shimizu

PHYSICA B-CONDENSED MATTER Vol. 385-86 page： 1225 - 1228 2006.11

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER SCIENCE BV

We have developed a magnetic neutron lens (MNL) based on an extended Halbach-type permanent sextupole magnet. The effective aperture size is 30 mm in diameter and the length is 2400 mm. The sextupole magnetic field distribution vertical bar B vertical bar = (G/2) r(2) with the gradient coefficient G = 10,660 +/- 530 T/m(2) are generated inside the magnet, where r is the distance from the magnet center axis. The neutron-focusing property is investigated by using pulsed polarized neutrons. The obtained results are discussed in comparison with numerical simulation results. The application to the focusing-geometry small-angle neutron scattering experiments is discussed. (c) 2006 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.physb.2006.05.416

Focusing and polarized neutron ultra-small-angle scattering spectrometer (SANS-J-II) at Research Reactor JRR3, Japan Reviewed

Satoshi Koizumi, Hiroki Iwase, Jun-ichi Suzuki, Takayuki Oku, Ryuhei Motokawa, Hajime Sasao, Hirokazu Tanaka, Daisuke Yamaguchi, Hirohiko M. Shimizu, Takeji Hashimoto

PHYSICA B-CONDENSED MATTER Vol. 385-86 page： 1000 - 1006 2006.11

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER SCIENCE BV

By employing focusing lenses of sextupole permanent magnet and biconcave MgF2 crystal, and high-resolution photomultiplier, SANS-J (pinhole small-angle neutron scattering spectrometer at research reactor JRR3, Tokai) was reconstructed to focusing and polarized neutron ultra-small-angle scattering spectrometer (SANS-J-II). Consequently, an accessible minimum wave number q(min) was improved from 3 x 10(-3) angstrom(-1) to 3 x 10(-4) angstrom(-1). Furthermore, we added He-3 sub-detectors with an analyzer super mirror at a sample position. With this setup, we perform polarization analysis at high q (> U angstrom(-1)) in order to quantitatively discriminate spin incoherent scattering from hydrogen or to perform spin contrast variation, by a dynamic nuclear polarization method (> 0.2 angstrom(-1)) (c) 2006 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.physb.2006.05.320

Superconducting Detector Array for Terahertz Imaging Applications

Ariyoshi Seiichiro, Otani Chiko, Dobroiu Adrian, MATSUO Hiroshi, SATO Hiromi, TAINO Tohru, KAWASE Kodo, SHIMIZU Hirohiko M.

Japanese journal of applied physics. Pt. 2, Letters Vol. 45 ( 37 ) page： L1004 - L1006 2006.10

Superconducting detector array for terahertz imaging applications Reviewed

Seiichiro Ariyoshi, Chiko Otani, Adrian Dobroiu, Hiroshi Matsuo, Hiromi Sato, Tohru Taino, Kodo Kawase, Hirohiko M. Shimizu

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS Vol. 45 ( 37-41 ) page： L1004 - L1006 2006.10

Language：English Publishing type：Research paper (scientific journal) Publisher：INST PURE APPLIED PHYSICS

We designed, fabricated; and characterized a superconducting detector array for terahertz imaging applications. To evaluate the optical performance as an imaging array, we measured the spectral response of a 5-pixel linear array detector, and confirmed its sensitivity peaks to be at the same frequency within accuracy of one percent in the range of 0.65 THz. The frequency peaks are also in good agreement with a numerical calculation. This linear array was tested in the nondestructive imaging of a metallic pattern and an integrated-circuit card, and allowed the shortening of the total acquisition time. High fabrication yield of about 99% was achieved for single superconducting tunnel junctions, which led to 90% yield for the detectors.

DOI： 10.1143/JJAP.45.L1004

Development of Terahertz Imaging Array Detector using Superconducting Tunnel Junctions

OTANI Chiko, ARIYOSHI Seiichiro, TAINO Tohru, KAWASE Kodo, SATO Hiromi, SHIMIZU Hirohiko M.

IEICE technical report Vol. 105 ( 629 ) page： 1 - 6 2006.2

Publisher：The Institute of Electronics, Information and Communication Engineers

Diagnosis using terahertz (THz) waves holds a great potential for various applications in fields such as medicine, biology, industry and agriculture because of its transmittance to soft matters as well as the good spatial resolution. In addition, the specific spectral absorption features can be also applicable for identifying materials inside opaque packages. In many such applications, imaging measurements with high sensitivity are required to obtain precisely the distribution of the transmitted THz waves of the measured objects and to distinguish the location of the materials of interest. We are developing two types of THz detectors using Nb-based superconducting tunnel junctions. In this paper, we introduce their detection principles, performances, and recent results including THz imaging.

Direct and Indirect Detection of Terahertz Waves using a Nb-based Superconducting Tunnel Junction Reviewed

Chiko Otani, Ran Nakano, Tohru Taino, Takayuki Shibuya, Seiichiro Ariyoshi, Shota Yoshimura, Hiroaki Myoren, Hiromi Sato, Hirohiko M. Shimizu, Susumu Takada, Kodo Kawase

7TH EUROPEAN CONFERENCE ON APPLIED SUPERCONDUCTIVITY (EUCAS'05) Vol. 43 ( 1 ) page： 1303 - 1306 2006

Language：English Publishing type：Research paper (international conference proceedings) Publisher：IOP PUBLISHING LTD

We are developing a broadband THz detectors using Nb-based superconducting tunnel junctions. We found two components in a current signal for 1-2 THz pulse input. From the comparison of results obtained for the signals, the frequency response for the different size of STJs and the STJs fabricated on different substrate materials, we demonstrate that they correspond to photons absorbed with the superconductor electrode ( referred as 'direct' component) and phonons generated by photons absorbed with the substrate ( referred as 'phononmediated' component).

DOI： 10.1088/1742-6596/43/1/318

　 PREV - NEXT 　

1