論文 - 北口　雅暁

Precision measurements of muonium and muonic helium hyperfine structure at J-PARC 査読有り 国際共著 国際誌

Strasser, P; Abe, M; Asai, K; Fukumura, S; Fushihara, M; Goto, Y; Ino, T; Iwai, R; Kanda, S; Kawamura, S; Kitaguchi, M; Nishimura, S; Oku, T; Okudaira, T; Powell, A; Sasaki, KI; Shimizu, HM; Shimomura, K; Tada, H; Torii, HA; Yamanaka, T; Yamazaki, T

EUROPEAN PHYSICAL JOURNAL D   79 巻 ( 3 )   2025年3月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1140/epjd/s10053-025-00959-2

Web of Science

Development of Neutron Interferometer Using Multilayer Mirrors and Measurements of Neutron-Nuclear Scattering Length with Pulsed Neutron Source 査読有り 国際誌

Fujiie, T; Hino, M; Hosobata, T; Ichikawa, G; Kitaguchi, M; Mishima, K; Seki, Y; Shimizu, HM; Yamagata, Y

PHYSICAL REVIEW LETTERS   132 巻 ( 2 )   2024年1月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevLett.132.023402

Web of Science

PubMed

その他リンク： http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevLett.132.023402/fulltext

Transverse asymmetry of individual γ rays in the La139(n⃗,γ)La140 reaction 査読有り 国際共著 国際誌

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

Physical Review C     2025年3月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevC.111.034611

Advancing neutron imaging techniques to highest resolution with fluorescent nuclear track detectors 査読有り 国際共著 国際誌

Muneem, A; Yoshida, J; Saito, TR; Ekawa, H; Hino, M; Hirota, K; Ichikawa, G; Kasagi, A; Kitaguchi, M; Mishima, K; Nabi, JU; Nakagawa, M

SCIENTIFIC REPORTS   15 巻 ( 1 )   2025年1月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1038/s41598-024-84591-x

Web of Science

PubMed

その他リンク： https://www.nature.com/articles/s41598-024-84591-x

A Study of Oscillating Magnetic Fields with Neutron Spin Interferometry 査読有り 国際誌

Suzuki, T; Fujitani, R; Tasaki, S; Hino, M; Kitaguchi, M; Oda, T; Nakamura, R

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   93 巻 ( 9 )   2024年9月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.7566/JPSJ.93.091008

Web of Science

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

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, HE; Shimizu, HM; Takahashi, S; Tanida, M; Yamashita, S; Yokohashi, M; Yoshioka, T

PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS   2024 巻 ( 9 )   2024年9月

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掲載種別：研究論文（学術雑誌）  

DOI： 10.1093/ptep/ptae123

Web of Science

その他リンク： https://academic.oup.com/ptep/article-pdf/2024/9/093G01/59179657/ptae123.pdf

Circular polarization measurement for individual gamma rays in capture reactions with intense pulsed neutrons 査読有り 国際共著 国際誌

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, HM; Shizuma, T; Taira, Y; Takada, S; Takahashi, S; Yoshikawa, H; Yoshioka, T; Zen, HS

EUROPEAN PHYSICAL JOURNAL A   60 巻 ( 8 )   2024年8月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1140/epja/s10050-024-01392-6

Web of Science

Polarized Cold-neutron Reflectometry at JRR-3/MINE2 for the Development of Ultracold-neutron Spin Analyzers for a Neutron EDM Experiment at TRIUMF

Higuchi, T; Akatsuka, H; Brossard, A; Fujimoto, D; Giampa, P; Hansen-Romu, S; Hatanaka, K; Hino, M; Chikawa, G; Imajo, S; Jamieson, B; Kawasaki, S; Kitaguchi, M; Mammei, R; Matsumiya, R; Mishima, K; Picker, R; Schreye, W; Shimizu, HM; Sidhu, S; Vanbergen, S

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   93 巻 ( 9 )   2024年7月

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DOI： 10.7566/JPSJ.93.091009

Web of Science

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

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

CLASSICAL AND QUANTUM GRAVITY   41 巻 ( 11 )   2024年6月

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DOI： 10.1088/1361-6382/ad42fa

Web of Science

Combination of crystal growth with optical floating zone and evaluation of Nd<SUP>3+</SUP>:LaAlO₃ crystals with the dynamic nuclear polarization of <SUP>139</SUP>La and <SUP>27</SUP>Al 査読有り 国際共著 国際誌

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, HM; Yosoi, M

REVIEW OF SCIENTIFIC INSTRUMENTS   95 巻 ( 6 )   2024年6月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1063/5.0202680

Web of Science

PubMed

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

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, HM; Shimomura, K; Tada, H; Torii, HA

PHYSICS   6 巻 ( 2 ) 頁： 877 - 890   2024年6月

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DOI： 10.3390/physics6020054

Web of Science

New muonic He atom HFS measurements at J-PARC MUSE 査読有り 国際共著 国際誌

Yu Goto, Seiso Fukumura, Patrick Strasser, Takashi Ino, Ryoto Iwai, Sohtaro Kanda, Shiori Kawamura, Masaaki Kitaguchi, Shoichiro Nishimura, Takayuki Oku, Takuya Okudaira, Hirohiko M. Shimizu, Koichiro Shimomura, Hiroki Tada, Hiroyuki A. Torii

Interactions   245 巻 ( 1 )   2024年4月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：Springer Science and Business Media LLC  

DOI： 10.1007/s10751-024-01912-2

その他リンク： https://link.springer.com/article/10.1007/s10751-024-01912-2/fulltext.html

High sensitivity of a future search for effects of <i>P</i>-odd / <i>T</i>-odd interactions on the 0.75 eV <i>p</i>-wave resonance in (<i>n</i>)over-right-arrow+<SUP>139</SUP>(La)over-right-arrow forward transmission determined using a pulsed neutron beam 査読有り 国際共著 国際誌

Nakabe, R; Auton, CJ; 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; Munoz, JGO; Parker, JD; Sakai, K; Shima, T; Shimizu, HM; Shinohara, T; Snow, WM; Takada, S; Takahashi, R; Takahashi, S; Tsuchikawa, Y; Yoshioka, T

PHYSICAL REVIEW C   109 巻 ( 4 )   2024年4月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevC.109.L041602

Web of Science

Scopus

Spin dependence in the p-wave resonance of y139La+nt

Okudaira, T; Nakabe, R; Auton, CJ; Endo, S; Fujioka, H; Gudkov, V; Ide, I; Ino, T; Ishikado, M; Kambara, W; Kawamura, S; Kobayashi, R; Kitaguchi, M; Okamura, T; Oku, T; Munoz, JGO; Parker, JD; Sakai, K; Shima, T; Shimizu, HM; Shinohara, T; Snow, WM; Takada, S; Tsuchikawa, Y; Takahashi, R; Takahashi, S; Yoshikawa, H; Yoshioka, T

PHYSICAL REVIEW C   109 巻 ( 4 )   2024年4月

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掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevC.109.044606

Web of Science

Scopus

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

Strasser, P; Fukumura, S; Iwai, R; Kanda, S; Kawamura, S; Kitaguchi, M; Nishimura, S; Seo, S; Shimizu, HM; Shimomura, K; Tada, H; Torii, HA

PHYSICAL REVIEW LETTERS   131 巻 ( 25 )   2023年12月

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DOI： 10.1103/PhysRevLett.131.253003

Web of Science

PubMed

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, HM

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   1057 巻   2023年12月

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DOI： 10.1016/j.nima.2023.168734

Web of Science

Diffuse scattering model of ultracold neutrons on wavy surfaces 査読有り 国際誌

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

Physical Review C   108 巻 ( 3 )   2023年9月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：American Physical Society (APS)  

DOI： 10.1103/physrevc.108.034605

その他リンク： http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevC.108.034605/fulltext

Measurement of the spatial polarization distribution of circularly polarized gamma rays produced by inverse Compton scattering

Taira, Y; Endo, S; Kawamura, S; Nambu, T; Okuizumi, M; Shizuma, T; Omer, M; Zen, HS; Okano, Y; Kitaguchi, M

PHYSICAL REVIEW A   107 巻 ( 6 )   2023年6月

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DOI： 10.1103/PhysRevA.107.063503

Web of Science

Angular distribution of γ rays from a neutron-induced p-wave resonance of 132Xe 査読有り 国際共著 国際誌

Okudaira, T; Tani, Y; Endo, S; Doskow, J; Fujioka, H; Hirota, K; Kameda, K; Kimura, A; Kitaguchi, M; Luxnat, M; Sakai, K; Schaper, DC; Shima, T; Shimizu, HM; Snow, WM; Takada, S; Yamamoto, T; Yoshikawa, H; Yoshioka, T

PHYSICAL REVIEW C   107 巻 ( 5 )   2023年5月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevC.107.054602

Web of Science

その他リンク： http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevC.107.054602/fulltext

Characterization of electroless nickel-phosphorus plating for ultracold-neutron storage 査読有り 国際共著 国際誌

Akatsuka, H; Andalib, T; Bell, B; Berean-Dutcher, J; Bernier, N; Bidinosti, CP; Cude-Woods, C; Currie, SA; Davis, CA; Franke, B; Gaur, R; Giampa, P; Hansen-Romu, S; Hassan, MT; Hatanaka, K; Higuchi, T; Gibson, C; Ichikawa, G; Ide, I; Imajo, S; Ito, TM; Jamieson, B; Kawasaki, S; Kitaguchi, M; Klassen, W; Korkmaz, E; Kuchler, F; Lang, M; Lavvaf, M; Lindner, T; Makela, M; Mammei, J; Mammei, R; Martin, JW; Matsumiya, R; Miller, E; Mishima, K; Momose, T; Morawetz, S; Morris, CL; Ong, HJ; O'Shaughnessy, CM; Pereira-Wilson, M; Picker, R; Piermaier, F; Pierre, E; Schreyer, W; Sidhu, S; Stang, D; Tiepo, V; Vanbergen, S; Wang, R; Wong, D; Yamamoto, N

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   1049 巻   2023年4月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.nima.2023.168106

Web of Science

Scopus

Investigation of neutron imaging applications using fine-grained nuclear emulsion 査読有り 国際共著 国際誌

Muneem, A; Yoshida, J; Ekawa, H; Hino, M; Hirota, K; Ichikawa, G; Kasagi, A; Kitaguchi, M; Muto, N; Mishima, K; Nabi, JU; Nakagawa, M; Naganawa, N; Saito, TR

JOURNAL OF APPLIED PHYSICS   133 巻 ( 5 ) 頁： 054902 - 054902   2023年2月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1063/5.0131098

Web of Science

Displacement-noise-free interferometeric gravitational-wave detector using unidirectional neutrons with four speeds 査読有り 国際誌

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

PHYSICS LETTERS A   458 巻   2023年1月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.physleta.2022.128581

Web of Science

The LiNA experiment: Development of multi-layered time projection chamber 査読有り

Naoyuki Sumi, Go Ichikawa, Kenji Mishima, Yasuhiro Makida, Masaaki Kitaguchi, So Makise, Shun Matsuzaki, Tomoya Nagano, Masaki Tanida, Hideaki Uehara, Kodai Yano, Hidetoshi Otono, Tamaki Yoshioka

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment     2023年1月

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掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.nima.2022.167586

Study of Thin Iron Films for Polarization Analysis of Ultracold Neutrons

Hiroaki Akatsuka, Takashi Higuchi, Sean Hansen-Romu, Kichiji Hatanaka, Tomohiro Hayamizu, Masahiro Hino, Go Ichikawa, Sohei Imajo, Blair Jamieson, Shinsuke Kawasaki, Masaaki Kitaguchi, Ryohei Matsumiya, Kenji Mishima

Proceedings of the 24th International Spin Symposium (SPIN2021)     2022年12月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

DOI： 10.7566/jpscp.37.020801

The Precision nEDM Measurement with UltraCold Neutrons at TRIUMF

Ryohei Matsumiya, Hiroaki Akatsuka, Chris P. Bidinosti, Charles A. Davis, Beatrice Franke, Derek Fujimoto, Michael T. W. Gericke, Pietro Giampa, Robert Golub, Sean Hansen-Romu, Kichiji Hatanaka, Tomohiro Hayamizu, Takashi Higuchi, Go Ichikawa, Sohei Imajo, Blair Jamieson, Shinsuke Kawasaki, Masaaki Kitaguchi, Wolfgang Klassen, Emma Klemets, Akira Konaka, Elie Korkmaz, Ekaterina Korobkina, Florian Kuchler, Maedeh Lavvaf, Larry Lee, Thomas Lindner, Kirk W. Madison, Yasuhiro Makida, Russell Mammei, Juliette Mammei, Jeffery W. Martin, Mark McCrea, Eric Miller, Kenji Mishima, Takamasa Momose, Takahiro Okamura, Hooi Jin Ong, Ruediger Picker, William D. Ramsay, Wolfgang Schreyer, Hirohiko M. Shimizu, Steve Sidhu, Shawn Stargardter, Isao Tanihata, Sean Vanbergen, Willem T. H. van Oers, Yutaka Watanabe

Proceedings of the 24th International Spin Symposium (SPIN2021)     2022年12月

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掲載種別：研究論文（国際会議プロシーディングス）  

DOI： 10.7566/jpscp.37.020701

Optically Polarized Alkali Metal Cell for Muonic Helium Measurements

Takashi Ino, Seiso Fukumura, Patrick Strasser, Masaki Fujita, Yoichi Ikeda, Sohtaro Kanda, Masaaki Kitaguchi, Shoichiro Nishimura, Takayuki Oku, Takuya Okudaira, Hirohiko M. Shimizu, Koichiro Shimomura

Proceedings of the 24th International Spin Symposium (SPIN2021)     2022年12月

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掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：Journal of the Physical Society of Japan  

DOI： 10.7566/jpscp.37.021208

Measurement of the transverse asymmetry of γ rays in the 117Sn(n, γ)118Sn reaction 査読有り 国際誌

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

PHYSICAL REVIEW C   106 巻 ( 6 )   2022年12月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevC.106.064601

Web of Science

その他リンク： http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevC.106.064601/fulltext

Study on the reusability of fluorescent nuclear track detectors using optical bleaching 査読有り 国際誌

Muneem, A; Yoshida, J; Ekawa, H; Hino, M; Hirota, K; Ichikawa, G; Kasagi, A; Kitaguchi, M; Kodaira, S; Mishima, K; Nabi, JU; Nakagawa, M; Sakashita, M; Saito, N; Saito, TR; Wada, S; Yasuda, N

RADIATION MEASUREMENTS   158 巻   頁： 106863 - 106863   2022年11月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.radmeas.2022.106863

Web of Science

Displacement-noise-free neutron interferometer for gravitational wave detection using a single Mach-Zehnder configuration 査読有り 国際誌

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

PHYSICS LETTERS A   441 巻   2022年7月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.physleta.2022.128150

Web of Science

A novel nuclear emulsion detector for measurement of quantum states of ultracold neutrons in the Earth's gravitational field 査読有り 国際共著 国際誌

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, RIP; Seki, Y; Shimizu, HM; Tada, S; Umemoto, A

JOURNAL OF INSTRUMENTATION   17 巻 ( 7 ) 頁： P07014 - P07014   2022年7月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1088/1748-0221/17/07/P07014

Web of Science

その他リンク： https://iopscience.iop.org/article/10.1088/1748-0221/17/07/P07014/pdf

Neutron displacement noise-free interferometer for gravitational-wave detection 査読有り 国際誌

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

PHYSICAL REVIEW D   105 巻 ( 12 )   2022年6月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevD.105.124017

Web of Science

Angular distribution of γ rays from the <i>p</i>-wave resonance of <SUP>118</SUP>Sn 査読有り 国際共著 国際誌

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, HM; Tani, Y; Yamamoto, T; Yoshikawa, H; Yoshioka, T

PHYSICAL REVIEW C   105 巻 ( 5 )   2022年5月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevC.105.054615

Web of Science

Scopus

Proposal for new measurements of muonic helium hyperfine structure at J-PARC

Seiso Fukumura, Patrick Strasser, Takashi Ino, Takayuki Oku, Takuya Okudaira, Sohtaro Kanda, Masaaki Kitaguchi, Koichiro Shimomura, Hirohiko M. Shimizu, Hiroyuki A. Torii, Shoichiro Nishimura

EPJ Web of Conferences   262 巻   頁： 01012 - 01012   2022年4月

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掲載種別：研究論文（学術雑誌）   出版者・発行元：EDP Sciences  

The measurement of the ground state hyperfine structure of muonic helium has the potential to improve the precision of the mass of the negative muon by a factor of 50 or more. The mass of the negative muon is very important because it enables us to test the CPT theorem by comparison with positive muon mass. We aim to measure the hyperfine structure of muonic helium with a precision 1000 times higher than previous experiments [1,2] using the highintensity muon beam at J-PARC and have already obtained results better than the current precision in zero-field measurements in a test experiment in March 2021. To further improve the precision, we plan to measure in a high magnetic field and incorporate a technique that can produce highly polarized muonic helium atom [3]. In this paper, we will report on these developments.

DOI： 10.1051/epjconf/202226201012

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

Takanori Mogi, Takuro Hasegawa, Katsuya Hirota, Go Ichikawa, Sei Ieki, Takashi Ino, Yoshihisa Iwashita, Shogo Kajiwara, Yu Kato, Masaaki Kitaguchi, Ryunosuke Kitahara, Jun Koga, So Makise, Shun Matsuzaki, Kenji Mishima, Koki Morikawa, Naoki NAGAKURA, Hiroki Okabe, Hidetoshi Otono, Yoshichika Seki, Daiichiro Sekiba, Tatsushi Shima, Haruki Shimizu, Hirohiko M. Shimizu, Yuki Sugisawa, Naoyuki Sumi, Hirochika Sumino, Tomohiko Tanabe, Tatsuhiko TOMITA, Hideaki Uehara, Takahito Yamada, Satoru Yamashita, Kodai Yano, Tamaki Yoshioka

Proceedings of Particles and Nuclei International Conference 2021 — PoS(PANIC2021)     2022年3月

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掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：Sissa Medialab  

DOI： 10.22323/1.380.0458

Neutron lifetime experiment with pulsed cold neutrons at J-PARC

Go Ichikawa, Yasuhiro Fuwa, Takuro Hasegawa, Masahiro Hino, Katsuya Hirota, Takashi Ino, Yoshihisa Iwashita, Masaaki Kitaguchi, Jun Koga, Shun Matsuzaki, Kenji Mishima, Takanori Mogi, Koki Morikawa, Hiroki Okabe, Hidetoshi Otono, Yoshichika Seki, Daiichiro Sekiba, Tatsushi Shima, Haruki Shimizu, Hirohiko M. Shimizu, Naoyuki Sumi, Hirochika Sumino, Satoru Yamashita, Kodai Yano, Tamaki Yoshioka

Proceedings of Particles and Nuclei International Conference 2021 — PoS(PANIC2021)     2022年3月

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掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：Sissa Medialab  

DOI： 10.22323/1.380.0457

Erratum: Transverse asymmetry of γ rays from neutron-induced compound states of ¹⁴⁰La (Physical Review C (2020) 101 (064624) DOI: 10.1103/PhysRevC.101.064624) 査読有り 国際共著 国際誌

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

Physical Review C   105 巻 ( 3 )   2022年3月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

We correct the sign of thetraverse asymmetry ALR in our previous paper The transverse asymmetry is derived from the correlation term snk? , where sn and k? are polarization of incident neutrons and momentum of emitted ? rays, respectively. The neutron polarization direction was determined using two measurements: (1) the measurement of the polarization direction of the circularly polarized laser which is used to polarize the 3He nuclei of the neutron polarizer, and (2) the measurement of the neutron polarization direction as it passes through the 3He neutron polarizer using a magnetic supermirror. However, in (1), the relation between the direction of the circular polarization and the spin of photons was misevaluated. Additionally, in (2), the relation between the neutron polarization direction reflected by the magnetic supermirror and the magnetic field applied to the magnetic supermirror was also misevaluated. Upon reevaluation we have deduced that the neutron polarization direction during the experiment was opposite to what was previously reported, and, hence, the sign of ALR should be reversed. As supporting evidence, the direction of the circular polarization of our laser system was obtained by measuring the electric paramagnetic resonance signal of Rb during laser pumping. The neutron polarization direction was also determined from the measurement of the parity violation at the 0.74-eV p-wave resonance of 139 La + n using our 3He neutron polarizer. These results also support that the neutron polarization direction was opposite to what was previously reported. Consequently, the transverse asymmetries for ? rays emitted in the transition from the 0.74-eV p-wave resonance to the ground state and inclusive ? rays are newly obtained as Agnd LR = - 0.60 ± 0.19 and Ainc LR = - 0.0045 ± 0.0080 , respectively. Similarly, Figs. 9, 11, 13, and 15 in the original paper should be replaced as Figs. 9, 11, 13, and 15 in this Erratum, respectively. The corrections do not affect results and conclusions of the original article. (Figure Presented).

DOI： 10.1103/PhysRevC.105.039901

Scopus

Measurement of nuclear spin relaxation time in lanthanum aluminate for development of polarized lanthanum target 査読有り 国際誌

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

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   1020 巻   2021年12月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.nima.2021.165845

Web of Science

Pendellosung interferometry probes the neutron charge radius, lattice dynamics, and fifth forces 査読有り 国際共著 国際誌

Heacock, B; Fujiie, T; Haun, RW; Henins, A; Hirota, K; Hosobata, T; Huber, MG; Kitaguchi, M; Pushin, DA; Shimizu, H; Takeda, M; Valdillez, R; Yamagata, Y; Young, AR

SCIENCE   373 巻 ( 6560 ) 頁： 1239 - +   2021年9月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1126/science.abc2794

Web of Science

PubMed

Energy-dependent angular distribution of individual γ rays in the <SUP>139</SUP>La(<i>n</i>, γ) <SUP>140</SUP>La* reaction 査読有り 国際共著 国際誌

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

PHYSICAL REVIEW C   104 巻 ( 1 )   2021年7月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevC.104.014601

Web of Science

New high-sensitivity searches for neutrons converting into antineutrons and/or sterile neutrons at the HIBEAM/NNBAR experiment at the European Spallation Source 査読有り 国際共著 国際誌

Addazi, A; Anderson, K; Ansell, S; Babu, KS; Barrow, JL; Baxter, DV; Bentley, PM; Berezhiani, Z; Bevilacqua, R; Biondi, R; Bohm, C; Brooijmans, G; Broussard, LJ; Cedercäll, J; Crawford, C; Dev, PSB; DiJulio, DD; Dolgov, AD; Dunne, K; Fierlinger, P; Fitzsimmons, MR; Fomin, A; Frost, MJ; Gardiner, S; Gardner, S; Galindo-Uribarri, A; Geltenbort, P; Girmohanta, S; Golubev, P; Golubeva, E; Greene, GL; Greenshaw, T; Gudkov, V; Hall-Wilton, R; Heilbronn, L; Herrero-Garcia, J; Holley, A; Ichikawa, G; Ito, TM; Iverson, E; Johansson, T; Jönsson, L; Jwa, YJ; Kamyshkov, Y; Kanaki, K; Kearns, E; Kokai, Z; Kerbikov, B; Kitaguchi, M; Kittelmann, T; Klinkby, E; Kobakhidze, A; Koerner, LW; Kopeliovich, B; Kozela, A; Kudryavtsev, V; Kupsc, A; Lee, YT; Lindroos, M; Makkinje, J; Marquez, JI; Meirose, B; Miller, TM; Milstead, D; Mohapatra, RN; Morishima, T; Muhrer, G; Mumm, HP; Nagamoto, K; Nepomuceno, A; Nesti, F; Nesvizhevsky, VV; Nilsson, T; Oskarsson, A; Paryev, E; Pattie, RW; Penttil, S; Perrey, H; Pokotilovski, YN; Potashnikovav, I; Ramic, K; Redding, C; Richard, JM; Ries, D; Rinaldi, E; Rizzi, N; Rossi, N; Ruggles, A; Rybolt, B; Santoro, V; Sarkar, U; Saunders, A; Senjanovic, G; Serebrov, AP; Shimizu, HM; Shrock, R; Silverstein, S; Silvermyr, D; Snow, WM; Takibayev, A; Tkachev, I; Townsend, L; Tureanu, A; Varriano, L; Vainshtein, A; de Vries, J; Wagner, R; Woracek, R; Yamagata, Y; Yiu, S; Young, AR; Zanini, L; Zhang, Z; Zimmer, O

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS   48 巻 ( 7 ) 頁： 070501 - 070501   2021年7月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1088/1361-6471/abf429

Web of Science

その他リンク： https://iopscience.iop.org/article/10.1088/1361-6471/abf429/pdf

Development of Pulsed Neutron Interferometer 査読有り 国際誌

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

Proceedings of the 3rd J-PARC Symposium (J-PARC2019)     2021年3月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：Journal of the Physical Society of Japan  

DOI： 10.7566/jpscp.33.011119

Measurement of Angular Distributions of \(\gamma \)-rays from 139La+n to Excited States of 140La

Takuya Okudaira, Shunsuke Endo, Hiroyuki Fujioka, Katsuya Hirota, Kohei Ishizaki, Atsushi Kimura, Masaaki Kitaguchi, Jun Koga, So Makise, Yudai Niinomi, Kenji Sakai, Tatsushi Shima, Hirohiko M. Shimizu, Shusuke Takada, Yuika Tani, Tomoki Yamamoto, Hiromoto Yoshikawa, Tamaki Yoshioka

Proceedings of the 3rd J-PARC Symposium (J-PARC2019)     2021年3月

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掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：Journal of the Physical Society of Japan  

DOI： 10.7566/jpscp.33.011121

Study of \(\gamma \)-ray from 4.53 eV p-wave Resonance of 111Cd Using Compound Nuclear Reaction

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

Proceedings of the 3rd J-PARC Symposium (J-PARC2019)     2021年3月

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掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：Journal of the Physical Society of Japan  

DOI： 10.7566/jpscp.33.011138

Study for the Experimental Sensitivity of T-violation Search in Compound Nuclear Reaction of 117Sn

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

Proceedings of the 3rd J-PARC Symposium (J-PARC2019)     2021年3月

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掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：Journal of the Physical Society of Japan  

DOI： 10.7566/jpscp.33.011137

S-wave Resonance Analysis of 139La and 109Ag in the Compound Nuclear Process Towards T-violation Search

Hiromoto Yoshikawa, Shunsuke Endo, Hiroyuki Fujioka, Katsuya Hirota, Kohei Ishizaki, Atsushi Kimura, Masaaki Kitaguchi, Jun Koga, So Makise, Yudai Niinomi, Takuya Okudaira, Kenji Sakai, Tatsushi Shima, Hirohiko M. Shimizu, Shusuke Takada, Yuika Tani, Tomoki Yamamoto, Tamaki Yoshioka

Proceedings of the 3rd J-PARC Symposium (J-PARC2019)     2021年3月

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掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：Journal of the Physical Society of Japan  

DOI： 10.7566/jpscp.33.011136

Proof-of-principle Experiment for the Study of a New Intermediate-range Interaction Using Coherent Neutron Scattering

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

Proceedings of the 3rd J-PARC Symposium (J-PARC2019)     2021年3月

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掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：Journal of the Physical Society of Japan  

DOI： 10.7566/jpscp.33.011118

Precise Neutron Lifetime Measurement Using Pulsed Neutron Beams at J-PARC

N. Sumi, K. Hirota, G. Ichikawa, T. Ino, Y. Iwashita, S. Kajiwara, Y. Kato, M. Kitaguchi, K. Mishima, K. Morikawa, T. Mogi, H. Oide, H. Okabe, H. Otono, T. Shima, H. M. Shimizu, Y. Sugisawa, T. Tanabe, S. Yamashita, K. Yano, T. Yoshioka

Proceedings of the 3rd J-PARC Symposium (J-PARC2019)     2021年3月

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掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：Journal of the Physical Society of Japan  

DOI： 10.7566/jpscp.33.011056

Measurement of γ rays from <SUP>6</SUP>LiF tile as an inner wall of a neutron-decay detector 査読有り 国際誌

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

JOURNAL OF INSTRUMENTATION   16 巻 ( 2 )   2021年2月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1088/1748-0221/16/02/P02001

Web of Science

Scopus

Neutron Imaging Using a Fine-Grained Nuclear Emulsion

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

JOURNAL OF IMAGING   7 巻 ( 1 ) 頁： 4 - 4   2021年1月

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掲載種別：研究論文（学術雑誌）  

DOI： 10.3390/jimaging7010004

Web of Science

PubMed

Neutron lifetime measurement with pulsed cold neutrons 査読有り

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, HM; Sumi, N; Sumino, H; Tomita, T; Uehara, H; Yamada, T; Yamashita, S; Yano, K; Yokohashi, M; Yoshioka, T

PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS   2020 巻 ( 12 )   2020年12月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1093/ptep/ptaa169

Web of Science

その他リンク： http://academic.oup.com/ptep/article-pdf/2020/12/123C02/35931162/ptaa169.pdf

Development and application of a <SUP>3</SUP>He Neutron Spin Filter at J-PARC 査読有り 国際誌

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, HM; Shinohara, T; Suzuki, J; Yamamoto, T

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   977 巻   頁： 164301 - 164301   2020年10月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.nima.2020.164301

Web of Science

Transverse asymmetry of γ rays from neutron -induced compound states of <SUP>140</SUP>La 査読有り 国際誌

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, HM; Takada, S; Tani, Y; Yoshikawa, H; Yoshioka, T

PHYSICAL REVIEW C   101 巻 ( 6 )   2020年6月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevC.101.064624

Web of Science

その他リンク： http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevC.101.064624/fulltext

An experimental setup for creating and imaging <SUP>4</SUP>He₂* excimer cluster tracers in superfluid helium-4 via neutron-<SUP>3</SUP>He absorption reaction 査読有り 国際誌

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

REVIEW OF SCIENTIFIC INSTRUMENTS   91 巻 ( 3 )   2020年3月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1063/1.5130919

Web of Science

Scopus

PubMed

複合核反応における¹¹¹Cd特定p波共鳴のγ線放出角度依存性の測定と解析報告

牧瀬 壮, 石崎 貢平, 遠藤 駿典, 奥平 琢也, 北口 雅暁, 木村 敦, 古賀 淳, 酒井 健二, 嶋 達志, 清水 裕彦, 高田 秀佐, 谷 結以花, 新實 裕大, 広田 克也, 藤岡 宏之, 山本 知樹, 吉岡 瑞樹, 吉川 大幹, 他NOPTREXコラボレーション

日本物理学会講演概要集   75.1 巻   頁： 308 - 308   2020年

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記述言語：日本語   出版者・発行元：一般社団法人 日本物理学会  

DOI： 10.11316/jpsgaiyo.75.1.0_308

Design and Construction of an Imaging beamline at the Nagoya University Neutron Source 査読有り 国際誌

Katsuya Hirota, Shogo Awano, Takuhiro Fujiie, Seiso Fukumura, Mayu Hishida, Go Ichikawa, Sohei Imajo, Ikuya Itoh, Yoshihisa Iwashita, Masaaki Kitaguchi, Yoshiaki Kiyanagi, Yasutoshi Kuriyama, Koki Morikawa, Yu-dai Niinomi, Hirohiko M. Shimizu, Kazuki Tsuchida, Yusuke Tsuchikwa, Yukio Tsurita, Akira Uritani, Kenichi Watanabe, Yutaka Yamagata, Nana Yamamoto, Atsushi Yamazaki, Sachiko Yoshihashi, Tamaki Yoshioka

EPJ Web of Conferences   231 巻   頁： 05002 - 05002   2020年

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：EDP Sciences  

The Nagoya University Accelerator driven Neutron Source (NUANS) is constructed at the main campus of the Nagoya University. The electrostatic accelerator is used with the maximum proton energy and intensity of 2.8MeV, 15mA(42kW) respectively. Two neutron beamlines are designed at NUANS. The BL1 is dedicated to BNCT development. The BL2 is designed for research and development for neutron devices and neutron imaging. The neutrons used for the BL2 are generated by using the (p, n) reaction from a thin beryllium target. We constructed a compact target station for the BL2 and measured the neutron transmission image.

DOI： 10.1051/epjconf/202023105002

Ultracold Neutron Time Focusing Experiment and Performance Evaluation of an Improved UCN Rebuncher at J-PARC/MLF 査読有り

S. Imajo, Y. Iwashita, K. Mishima, M. Kitaguchi, H. M. Shimizu, T. Ino, S. Yamashita, K. Hirota, F. Goto, Y. Fuwa, R. Katayama

Proceedings of The 3rd J-PARC Symposium (in press)     2020年

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

Measurement of the total neutron-scattering cross-section ratios of noble gases of natural isotopic composition using a pulsed neutron beam 査読有り 国際共著 国際誌

Haddock, CC; Hiromoto, M; Hirota, K; Ino, T; Kitaguchi, M; Mishima, K; Oi, N; Shima, T; Shimizu, HM; Snow, WM; Yoshioka, T

PHYSICAL REVIEW C   100 巻 ( 6 )   2019年12月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevC.100.064002

Web of Science

Measurement of the angular distribution of γ-rays after neutron capture by 139La for a T-violation search 査読有り

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

EPJ Web of Conferences     2019年12月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：EDP Sciences  

DOI： 10.1051/epjconf/201921909001

Measurement and alleviation of subsurface damage in a thick-crystal neutron interferometer 査読有り 国際共著 国際誌

Heacock, B; Haun, R; Hirota, K; Hosobata, T; Huber, MG; Jamer, ME; Kitaguchi, M; Pushin, DA; Shimizu, H; Taminiau, I; Yamagata, Y; Yamamoto, T; Young, AR

ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES   75 巻   頁： 833 - 841   2019年11月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1107/S2053273319011604

Web of Science

Scopus

PubMed

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 査読有り 国際誌

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, HM; Sumi, N; Sumino, H; Taketani, K; Tomita, T; Yamada, T; Yamashita, S; Yokohashi, M; Yoshioka, T

PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS   2019 巻 ( 9 ) 頁： 093C01   2019年9月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1093/ptep/ptz096

Web of Science

Generation of <SUP>4</SUP>He₂* Clusters via Neutron-<SUP>3</SUP>He Absorption Reaction Toward Visualization of Full Velocity Field in Quantum Turbulence 査読有り 国際誌

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, HM; Shinohara, T; Suzuki, S; Tomita, H; Tsuji, Y; Wada, N

JOURNAL OF LOW TEMPERATURE PHYSICS   196 巻 ( 1-2 ) 頁： 275 - 282   2019年7月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1007/s10909-018-02112-3

Web of Science

Scopus

First ultracold neutrons produced at TRIUMF 査読有り 国際共著 国際誌

Ahmed, S; Altiere, E; Andalib, T; Bell, B; Bidinosti, CP; Cudmore, E; Das, M; Davis, CA; 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, KW; Makida, Y; Mammei, J; Mammei, R; Martin, JW; Matsumiya, R; Miller, E; Mishima, K; Momose, T; Okamura, T; Page, S; Picker, R; Pierre, E; Ramsay, WD; Rebenitsch, L; Rehm, F; Schreyer, W; Shimizu, HM; Sidhu, S; Sikora, A; Smith, J; Tanihata, I; Thorsteinson, B; Vanbergen, S; van Oers, WTH; Watanabe, YX

PHYSICAL REVIEW C   99 巻 ( 2 )   2019年2月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

© 2019 American Physical Society. We installed a source for ultracold neutrons at a new, dedicated spallation target at TRIUMF. The source was originally developed in Japan and uses a superfluid-helium converter cooled to 0.9K. During an extensive test campaign in November 2017, we extracted up to 325000 ultracold neutrons after a one-minute irradiation of the target, over three times more than previously achieved with this source. The corresponding ultracold-neutron density in the whole production and guide volume is 5.3cm-3. The storage lifetime of ultracold neutrons in the source was initially 37 s and dropped to 24 s during the 18 days of operation. During continuous irradiation of the spallation target, we were able to detect a sustained ultracold-neutron rate of up to 1500s-1. Simulations of UCN production, UCN transport, temperature-dependent UCN yield, and temperature-dependent storage lifetime show excellent agreement with the experimental data and confirm that the ultracold-neutron-upscattering rate in superfluid helium is proportional to T7.

DOI： 10.1103/PhysRevC.99.025503

Web of Science

Scopus

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

Itoh, S; Nakaji, M; Uchida, Y; Kitaguchi, M; Shimizu, HM

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   918 巻   頁： 99 - 99   2019年2月

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DOI： 10.1016/j.nima.2018.10.218

Web of Science

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)   198 巻   2019年

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DOI： 10.1051/epjconf/201919800003

Web of Science

時間反転対称性の破れ探索のための複合核反応を用いた¹¹³Cdの7.0 eV p波由来のγ線測定

牧瀬 壮, 高田 秀佐, 古賀 淳, 吉岡 瑞樹, 清水 裕彦, 山本 知樹, 石崎 貢平, 遠藤 駿典, 佐藤 匠, 新實 裕大, 北口 雅暁, 広田 克也, 嶋 達志, 吉川 大幹, 藤岡 宏之, 谷 結以花, 奥平 琢也, 木村 敦, 酒井 健二, 他NOPTREXコラボレーション

日本物理学会講演概要集   74.1 巻   頁： 273 - 273   2019年

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記述言語：日本語   出版者・発行元：一般社団法人 日本物理学会  

DOI： 10.11316/jpsgaiyo.74.1.0_273

A search for deviations from the inverse square law of gravity at nm range using a pulsed neutron beam 査読有り 国際共著 国際誌

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

EPJ Web of Conferences   219 巻   頁： 05002 - 05002   2019年

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：EDP Sciences  

Recently published results and ongoing experimental efforts to search for deviations from the inverse square law of gravity at the nanometer length scale using slow neutron scattering from the noble gases are discussed. Using the pulsed slow neutron beamline BL05 at the Materials and Life Sciences Facility at J-PARC, we measured the neutron momentum transfer (q) dependence of the differential scattering cross section for the noble gases He, Ne, Ar, Kr, and Xe. By comparing to the distributions obtained using pseudo-experimental Monte Carlo simulations and forming ratios between Xe and He, we placed an upper bound on the strength of a new interaction as a function of interaction length λ which improved upon previous results in the region λ &lt; 0.1 nm, and remains competitive in the larger λ region. Additionally we describe how we are using our technique to extract relative values of the total neutron scattering cross sections of the noble gases, as well as how we plan to measure the neutron-electron scattering length using the NOVA instrument on BL21 at J-PARC.

DOI： 10.1051/epjconf/201921905002

Development of the neutron polarizer for the T-violation search using compound nuclei 査読有り 国際誌

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

Proceedings of Science   356 巻   2019年

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

© Copyright owned by the author(s). 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.

Scopus

Measurement of P-Violation in 139La(n,γ)140La – a first step towards a T-Violation search 査読有り

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

EPJ Web of Conferences   219 巻   頁： 09002 - 09002   2019年

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：{EDP} Sciences  

<jats:p>We performed a polarized neutron transmission asymmetry measurement utilizing the <jats:sup>139</jats:sup>La(<jats:italic>n</jats:italic>,γ)<jats:sup>140</jats:sup>La reaction. This measurement involved the use of a recently developed <jats:sup>3</jats:sup>He spin filter mounted on the J-PARC MLF beam line number 4 (BL04). The resulting value of the longitudinal asymmetry <jats:italic>A</jats:italic><jats:sub><jats:italic>L</jats:italic></jats:sub> = (11.7 ± 1.1)% was found to be in good agreement with existing values in the literature suggesting that the method by which we polarize the neutron beam is not a significant source of uncertainty. This preliminary work represents a first step toward future measurements of the angular correlation in (<jats:italic>n̅</jats:italic>,<jats:italic>Υ</jats:italic>) reactions necessary in the search for enhanced T-Violation in compound nuclei.</jats:p>

DOI： 10.1051/epjconf/201921909002

Verification of the compound nuclear model for T-violation search

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

Proceedings of Science   356 巻   2019年

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掲載種別：研究論文（国際会議プロシーディングス）  

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

Scopus

New project for precise neutron lifetime measurement at J-PARC

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

EPJ Web of Conferences   219 巻   頁： 03003 - 03003   2019年

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掲載種別：研究論文（学術雑誌）   出版者・発行元：EDP Sciences  

The decay lifetime of free neutrons (∼880 s) is an important parameter of the weak interaction and for Big Bang Nucleosynthesis. However, results of measurements currently show discrepancies depending on the method used. As most experiments nowadays employ ultra cold neutrons, we have developed a new cold-beam experiment which we perform at the Japan Proton Accelerator Research Complex. As a special feature, a polarized neutron beam is bunched by a spin flip chopper. A time projection chamber operated with He and CO₂ gas, including a well-controlled amount of ³He, is used for detection of the beta-decays and simultaneous determination of the beam intensity. Using the data between 2014 and 2016, we evaluated our first, preliminary result of the neutron lifetime as 896 ± 10(stat.) ₋₁₀⁺¹⁴(sys.) s. We plan several upgrades to achieve our precision goal of 1 s.

DOI： 10.1051/epjconf/201921903003

Measurement of the angular distribution of prompt gamma-rays emitted in the 117Sn(n, γ) reaction for a T-violation search 査読有り

Jun Koga, Shusuke Takada, Tamaki Yoshioka, Hirohiko M. Shimizu, Katsuya Hirota, Norio Oi, Tomoki Yamamoto, Ikuya Ito, Kohei Ishizaki, Shunsuke Endo, Takumi Sato, Masaaki Kitaguchi, Christopher C. Haddock, Takuya Okudaira, Kenji Sakai, Atsushi Kimura

EPJ Web of Conferences   219 巻   頁： 09004 - 09004   2019年

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：{EDP} Sciences  

<jats:p>It is theoretically suggested that the violation of charge conjugation and parity symmetry (CP-violation) could be enhanced in several compound nuclear reactions. According to the CPT theorem the violation of time-reversal symmetry (T-violation) would be enhanced too. The experimental sensitivity to find a T-violating effect in neutron-induced compound nuclear reactions depends on the value of a spin factor κ(<jats:italic>J</jats:italic>), which is a parameter specific for each nuclide. It can be determined from the angular dependence of γ-ray emission in (n,γ) reactions induced near a p-wave resonance. In this paper, the measurement result and the analysis status of experiments using the target nucleus <jats:sup>117</jats:sup>Sn are reported.</jats:p>

DOI： 10.1051/epjconf/201921909004

Measurement of the angular distribution of γ-rays emitted from the compound state after neutron capture by 81Br for a search of T-violation 査読有り 国際共著 国際誌

Shunsuke Endo, Hirohiko M. Shimizu, Masaaki Kitaguchi, Hirota Katsuya, Tomoki Yamamoto, Kohei Ishizaki, Takumi Sato, Tamaki Yoshioka, Shusuke Takada, Jun Koga, Takuya Okudaira, Kenji Sakai, Atsushi Kimura, Christopher C. Haddock

EPJ Web of Conferences   219 巻   頁： 09003 - 09003   2019年

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：{EDP} Sciences  

<jats:p>It is known that parity violation can be enhanced in compound nuclei due to mixing of s- and p-waves, and it is suggested that time reversal invariance (T) violation is enhanced by the same mechanism. We are planing a T-violation search using compound nuclei produced in neutron capture reactions. Although <jats:sup>81</jats:sup>Br is one of the candidate target nuclei, its sensitivity to T-violation has not yet been determined. For an estimate of the latter, a measurement of the angular distribution of γ-rays emitted in the <jats:sup>81</jats:sup>Br(n,γ) reaction was carried out in November 2017, of which we report first results.</jats:p>

DOI： 10.1051/epjconf/201921909003

Polarized lanthanum target for the t-violation search in slow neutron transmission 査読有り 国際誌

Kohei Ishizaki, Hirohiko M. Shimizu, Masaaki Kitaguchi, Taku Matsushita, Masataka Iinuma, Hideki Kohri, Hiromoto Yoshikawa, Masaru Yosoi, Tatsushi Shima, Takahiro Iwata, Yoshiyuki Miyachi, Shigeru Ishimoto, Masaki Fujita, Yoichi Ikeda

Proceedings of Science   379 巻   2019年

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：Sissa Medialab Srl  

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.

Scopus

Development of New Neutron Mirrors for Measuring the Neutron Electric Dipole Moment 査読有り 国際誌

Ryo Katayama, Kenji Mishima, Satoru Yamashita, Masaaki Kitaguchi, Tamaki Yoshioka, Yoshichika Seki, Masahiko Mitsuhashi, Masahiko Sugihara, Masahiro Hino, Eiichiro Watanabe, Daiju Tsuya, Mikiko Saito, Norifumi L. Yamada

Proceedings of the International Conference on Neutron Optics (NOP2017)     2018年11月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：Journal of the Physical Society of Japan  

DOI： 10.7566/jpscp.22.011009

A cold/ultracold neutron detector using fine-grained nuclear emulsion with spatial resolution less than 100 nm 査読有り 国際誌

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

EUROPEAN PHYSICAL JOURNAL C   78 巻 ( 11 )   2018年11月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Springer Nature  

DOI： 10.1140/epjc/s10052-018-6395-7

Web of Science

Pendellosung interferometry by using pulsed neutrons 査読有り

Itoh, S; Nakaji, M; Uchida, Y; Kitaguchi, M; Shimizu, HM

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   908 巻   頁： 78 - 81   2018年11月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.nima.2018.08.043

Web of Science

A Search for Possible Deviations from Newtonian Gravity at the nm Length Scale Using Neutron-Noble Gas Scattering 査読有り 国際共著 国際誌

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

JPS Conference Proceedings     2018年11月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

Measurement of Angular Distributions in 139La(n,γ) Reaction for T violation Search 査読有り

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

JPS Conference Proceedings     2018年11月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

DOI： 10.7566/JPSCP.22.011041

Measurement of Angular Distributions in 139La(n,gamma) Reaction for T Violation Search 査読有り

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

JPS Conference Proceedings     2018年11月

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記述言語：英語   掲載種別：研究論文（その他学術会議資料等）  

Measurement of (n,gamma) Reaction of 117Sn for T-Violation Search by Using Compound Nucleus 査読有り

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

JPS Conference Proceedings     2018年11月

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記述言語：英語   掲載種別：研究論文（その他学術会議資料等）  

Fundamental Physics Using High-Performance Optics 査読有り 国際共著 国際誌

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

JPS Conference Proceedings     2018年11月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

Development of a Neutron Spin Filter for a T Violation Search in Compound Nuclei 査読有り 国際共著 国際誌

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

JPS Conference Proceedings     2018年11月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

Angular distribution of γ rays from neutron-induced compound states of <SUP>140</SUP>La 査読有り

Okudaira, T; Takada, S; Hirota, K; Kimura, A; Kitaguchi, M; Koga, J; Nagamoto, K; Nakao, T; Okada, A; Sakai, K; Shimizu, HM; Yamamoto, T; Yoshioka, T

PHYSICAL REVIEW C   97 巻 ( 3 )   2018年3月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevC.97.034622

Web of Science

Scopus

Search for deviations from the inverse square law of gravity at nm range using a pulsed neutron beam 査読有り

Haddock, CC; Oi, N; Hirota, K; Ino, T; Kitaguchi, M; Matsumoto, S; Mishima, K; Shima, T; Shimizu, HM; Snow, WM; Yoshioka, T

PHYSICAL REVIEW D   97 巻 ( 6 )   2018年3月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevD.97.062002

Web of Science

Scopus

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 査読有り

Takada, S; Okudaira, T; Goto, F; Hirota, K; Kimura, A; Kitaguchi, M; Koga, J; Nakao, T; Sakai, K; Shimizu, HM; Yamamoto, T; Yoshioka, T

JOURNAL OF INSTRUMENTATION   13 巻 ( 2 )   2018年2月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1088/1748-0221/13/02/P02018

Web of Science

Scopus

Ultracold Neutron Time Focusing Experiment with an Improved UCN Rebuncher at J-PARC/MLF 査読有り

S. Imajo, Y. Iwashita, K. Mishima, M. Kitaguchi, H. M. Shimizu, T. Ino, S. Yamashita, K. Hirota, F. Goto, Y. Fuwa, R. Katayama

JPS Conference Proceedings   22 巻   2018年

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

DOI： 10.7566/JPSCP.22.011038

The International Conference on Neutron Optics (NOP2017) in Nara 査読有り

Yoshiaki Kiyanagi, Kazuhisa Kakurai, Hirohiko Shimizu, Masaaki Kitaguchi, Takayuki Oku

Neutron News   28 巻 ( 4 ) 頁： 18 - 20   2017年10月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：Taylor and Francis Inc.  

DOI： 10.1080/10448632.2017.1378038

Scopus

Towards a high-resolution TOF-MIEZE spectrometer with very cold neutrons 査読有り

Oda, T; Hino, M; Kitaguchi, M; Filter, H; Geltenbort, P; Kawabata, Y

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   860 巻   頁： 35 - 41   2017年7月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.nima.2017.03.014

Web of Science

Scopus

その他リンク： http://orcid.org/0000-0002-0918-4382

Concentration of the velocity distribution of pulsed neutron beams 査読有り

Kitaguchi, M; Iwashita, Y; Shimizu, HM

PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS   2017 巻 ( 4 )   2017年4月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1093/ptep/ptx029

Web of Science

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

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

Proceedings of Science   2017-January 巻   2017年1月

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? Copyright owned by the author(s). 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： 10.22323/1.294.0050

複合核状態における時間反転対称性の破れ探索実験計画

北口 雅暁, 高田 秀佐, 古賀 淳, 吉岡 瑞樹, 猪野 隆, 旭 耕一郎, 百瀬 孝昌, 岩田 高広, 酒井 健二, 木村 敦, 日野 正裕, 清水 裕彦, 嶋 達志, 山形 豊, 広田 克也, 奥平 琢也, 大井 法子, 伊藤 維久弥, 山本 知樹, 遠藤 駿典, C. Haddock

日本物理学会講演概要集   72 巻   頁： 255 - 255   2017年1月

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記述言語：日本語   掲載種別：研究論文（研究会，シンポジウム資料等）   出版者・発行元：一般社団法人 日本物理学会  

DOI： 10.11316/jpsgaiyo.72.2.0_255

Supermirror neutron guide system for neutron resonance spin echo spectrometers at a pulsed neutron source 査読有り

Hino, M; Oda, T; Yamada, NL; Endo, H; Seto, H; Kitaguchi, M; Harada, M; Kawabata, Y

JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY   54 巻 ( 11 ) 頁： 1223 - 1232   2017年

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1080/00223131.2017.1359699

Web of Science

A neutron detector with submicron spatial resolution using fine-grained nuclear emulsion 査読有り 国際誌

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

NEUTRON IMAGING FOR APPLICATIONS IN INDUSTRY AND SCIENCE   88 巻   頁： 224 - 230   2017年

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

DOI： 10.1016/j.phpro.2017.06.031

Web of Science

複合核状態における時間反転対称性の破れ探索実験計画

北口 雅暁, 清水 裕彦, 広田 克也, 奥平 琢也, 岡田 晏珠, 伊藤 維久弥, 山本 知樹, 高田 秀佐, 古賀 淳, 吉岡 瑞樹, 猪野 隆, 旭 耕一郎, 百瀬 孝昌, 岩田 高広, 酒井 健二, 木村 敦, 日野 正裕, 嶋 達志, 山形 豊

日本物理学会講演概要集   72.1 巻   頁： 299 - 299   2017年

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記述言語：日本語   出版者・発行元：一般社団法人 日本物理学会  

中性子吸収反応による複合核共鳴状態では部分波干渉によって対称性の破れが増幅する。時間反転対称性の破れについても電気双極子能率を超えた感度を持つ可能性がある。現在候補となるいくつかの標的核について、増幅度を見積もるための測定を進めている。J-PARCでの実験計画について報告する。

DOI： 10.11316/jpsgaiyo.72.1.0_299

J-PARC/BL05における中性子寿命測定実験：高統計測定に向けたビームラインアップグレード

北原, 龍之介, 長倉, 直樹, 角野, 浩史, 吉岡, 瑞樹, 音野, 瑛俊, 富田, 龍彦, 角, 直幸, 森下, 彩, 古賀, 淳, 生出, 秀行, 嶋, 達志, 岩下, 芳久, 三島, 賢二, 猪野, 隆, 竹谷, 薫, 関, 義親, 関場, 大一郎, 清水, 裕彦, 広田, 克也, 横橋, 麻美, 北口, 雅暁, 山下, 了, 山田, 崇人, 家城, 斉

日本物理学会講演概要集   72 巻 ( 0 ) 頁： 76 - 76   2017年

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記述言語：日本語   掲載種別：研究論文（研究会，シンポジウム資料等）   出版者・発行元：一般社団法人 日本物理学会  

DOI： 10.11316/jpsgaiyo.72.2.0_76

J-PARC/BL05における中性子寿命測定実験：実験の現状と最新結果

三島, 賢二, 長倉, 直樹, 生出, 秀行, 音野, 瑛俊, 関, 義親, 関場, 大一郎, 嶋, 達志, 清水, 裕彦, 角, 直幸, 角野, 浩史, 竹谷, 薫, 広田, 克也, 富田, 龍彦, 山田, 崇人, 山下, 了, 横橋, 麻美, 吉岡, 瑞樹, 家城, 斉, 猪野, 隆, 岩下, 芳久, 北口, 雅暁, 北原, 龍之介, 古賀, 淳, 森下, 彩

日本物理学会講演概要集   72 巻 ( 0 ) 頁： 75 - 75   2017年

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記述言語：日本語   掲載種別：研究論文（研究会，シンポジウム資料等）   出版者・発行元：一般社団法人 日本物理学会  

DOI： 10.11316/jpsgaiyo.72.2.0_75

Pulsed neutron time-dependent intensity modulation for quasi-elastic neutron scattering spectroscopy 査読有り

Oda, T; Hino, M; Kitaguchi, M; Geltenbort, P; Kawabata, Y

REVIEW OF SCIENTIFIC INSTRUMENTS   87 巻 ( 10 )   2016年10月

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記述言語：英語  

DOI： 10.1063/1.4965835

Web of Science

Scopus

PubMed

その他リンク： http://orcid.org/0000-0002-0918-4382

The MTV experiment: searching for T-violation in polarized Li-8 at TRIUMF 査読有り 国際共著 国際誌

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   237 巻 ( 1 )   2016年8月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1007/s10751-016-1336-z

Web of Science

Scopus

Neutron-antineutron oscillations: Theoretical status and experimental prospects 査読有り

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   612 巻   頁： 1 - 45   2016年2月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.physrep.2015.11.001

Web of Science

Pulsed ultra-cold neutron production using a Doppler shifter at J-PARC 査読有り

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   2016 巻 ( 1 )   2016年1月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1093/ptep/ptv177

Web of Science

結晶内電場を利用した中性子EDM探索に用いる結晶、実験体系の可能性

中路 雅也, 伊藤 茂康, 北口 雅暁, 清水 裕彦

日本物理学会講演概要集   71 巻   頁： 277 - 277   2016年

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記述言語：日本語   出版者・発行元：一般社団法人 日本物理学会  

<p>中性子EDMの探索は新しい物理の良いプローブである。結晶内の強力な電場を用いることで高い感度で中性子EDMを探索できる可能性がある。現在BGO結晶を用いた実験を計画しており、結晶内電場を測定するための実験体系をJ-PARC中性子ビームラインに構築した。本講演では、EDM探索により適した結晶と実験の検討について報告する。</p>

DOI： 10.11316/jpsgaiyo.71.2.0_277

名古屋大学加速器駆動中性子源(NUANS)のビームラインの設計

伊藤 維久弥, 清水 裕彦, 北口 雅暁, 広田 克也, 市川 豪, 鬼柳 善明, 土田 一輝, 瓜谷 章, 吉橋 幸子, 渡辺 賢一, 山崎 淳, 三和田 靖彦, 山形 豊, 岩下 芳久

日本物理学会講演概要集   71 巻   頁： 295 - 295   2016年

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記述言語：日本語   出版者・発行元：一般社団法人 日本物理学会  

<p>名古屋大学に新しく設置される名古屋大学加速器駆動中性子源( NUANS)の2ndビームラインを設計するために行った遮蔽計算の過程や結果、陽子加速器の出口からNUANSの2ndビームラインのターゲットまでの陽子ビームの輸送計算などについて述べる。また、この名古屋大学加速器駆動中性子源の2ndビームラインを使用してどのような実験を行うことができるのかについても述べる。</p>

DOI： 10.11316/jpsgaiyo.71.2.0_295

超流動⁴He中の流れ可視化のための中性子³He吸収反応を用いたHe₂^*クラスタの生成

松下 琢, Guo W., 広田 克也, 北口 雅暁, 鬼柳 善明, 清水 裕彦, 辻 義之, 和田 信雄

日本物理学会講演概要集   71 巻   頁： 1543 - 1543   2016年

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記述言語：日本語   出版者・発行元：一般社団法人 日本物理学会  

<p>フロリダでレーザを用いて超流動中4He中に生成したHe2*エキシマによる常流動成分流の可視化に成功している。一方、レーザを用いた場合、He2*は線上に励起されるため全流れ場の解析にはより広範囲でHe2*を生成する手法が求められる。そのため名大で開発中の低速中性子源によるHe2*生成の可能性を現在検討している。今回は準備として秋に行う予定の、中性子によるHe2*生成効率などを検証する実験についての検討内容について発表する。</p>

DOI： 10.11316/jpsgaiyo.71.2.0_1543

Discrete symmetry tests in neutron-induced compound states 査読有り 国際共著 国際誌

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   2016-September 巻   2016年

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

Scopus

その他リンク： http://orcid.org/0000-0002-9797-0745

Feasibility study of neutron wavelength compressor for edm measurement 査読有り 国際誌

Masaaki Kitaguchi, Yoshihisa Iwashita, Hirohiko M. Shimizu

Proceedings of Science   2016- 巻   2016年

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：Proceedings of Science (PoS)  

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.

Scopus

Precise neutron lifetime experiment using pulsed neutron beams at J-PARC 査読有り

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   2016-September 巻   頁： 191   2016年

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

Scopus

その他リンク： http://orcid.org/0000-0002-4689-6231

中性子EDM測定のためのBi₁₂GeO₂₀結晶内電場の測定

伊藤 茂康, 中路 雅也, 北口 雅暁, 清水 裕彦

日本物理学会講演概要集   71 巻   頁： 276 - 276   2016年

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記述言語：日本語   出版者・発行元：一般社団法人 日本物理学会  

<p>中性子EDMの存在は時間反転対称性を破り、その探索は新しい物理の良いプローブである。我々は結晶内に存在する強い電場を利用した中性子EDM測定実験を進めている。今回はJ-PARC BL17で行ったBi_12_GeO_20_結晶の内部電場測定実験の結果を報告する。</p>

DOI： 10.11316/jpsgaiyo.71.2.0_276

Development of time projection chamber for precise neutron lifetime measurement using pulsed cold neutron beams 査読有り

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   799 巻   頁： 187 - 196   2015年11月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.nima.2015.08.006

Web of Science

Scopus

The ion beam sputtering facility at KURRI: Coatings for advanced neutron optical devices 査読有り

Hino, M; Oda, T; Kitaguchi, M; Yamada, NL; Tasaki, S; Kawabata, Y

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   797 巻   頁： 265 - 270   2015年10月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.nima.2015.06.046

Web of Science

Pulsed neutron-beam focusing by modulating a permanent-magnet sextupole lens 査読有り

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   2015 巻 ( 4 )   2015年4月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：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

Web of Science

21aDL-6 冷中性子を用いた中性子反中性子振動探索実験のための光学系

市川 豪, 清水 裕彦, 北口 雅暁, NNbar Collaboration

日本物理学会講演概要集   70 巻   頁： 66 - 66   2015年

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記述言語：日本語   出版者・発行元：一般社団法人日本物理学会  

DOI： 10.11316/jpsgaiyo.70.1.0_66

CiNii Books

Observation of the Spatial Distribution of Gravitationally Bound Quantum States of Ultracold Neutrons and Its Derivation Using the Wigner Function 査読有り

Ichikawa, G; Komamiya, S; Kamiya, Y; Minami, Y; Tani, M; Geltenbort, P; Yamamura, K; Nagano, M; Sanuki, T; Kawasaki, S; Hino, M; Kitaguchi, M

PHYSICAL REVIEW LETTERS   112 巻 ( 7 )   2014年2月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevLett.112.071101

Web of Science

PubMed

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

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)   528 巻   2014年

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記述言語：日本語   掲載種別：研究論文（国際会議プロシーディングス）  

DOI： 10.1088/1742-6596/528/1/012010

Web of Science

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

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)   528 巻   2014年

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記述言語：日本語   掲載種別：研究論文（国際会議プロシーディングス）  

DOI： 10.1088/1742-6596/528/1/012030

Web of Science

Development of a simulation for measuring neutron electric dipole moment 査読有り

Katayama Ryo, Mishima Kenji, Yamashita Satoru, Sakurai Dai, Kitaguchi Masaaki, Yoshioka Tamaki, Seki Yoshichika

INTERNATIONAL WORKSHOP ON NEUTRON OPTICS AND DETECTORS (NOP&D 2013)   528 巻   2014年

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記述言語：日本語   掲載種別：研究論文（国際会議プロシーディングス）  

DOI： 10.1088/1742-6596/528/1/012031

Web of Science

Numerical simulation of BL06 neutron beamline for" VIN ROSE" at J-PARC/MLF 査読有り

Oda Tatsuro, Kawabata Yuji, Seto Hideki, Hino Masahiro, Kitaguchi Masaaki, Yamada Norifumi L

Prog. Nucl. Sci. Tech.   4 巻   頁： 214   2014年

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

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

5th International Particle Accelerator Conference, IPAC 2014 IPAC 2014 Proceedings of the 5th International Particle Accelerator Conference     頁： 751 - 753   2014年

Development of two-dimensional multiwire-type neutron detector system with individual line readout and optical signal transmission 査読有り

K. Toh, T. Nakamura, K. Sakasai, K. Soyama, M. Hino, M. Kitaguchi, H. Yamagishi

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   726 巻   頁： 169 - 174   2013年10月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

A multiwire-type two-dimensional neutron detector system with a sensitive area of 128 x 128 mm(2) is developed for use in the Materials and Life Science Experimental Facility at the Japan Proton Accelerator Research Complex. The system can achieve a short response time and high spatial resolution using the individual line readout method. Optical devices have been incorporated in the system for long-distance signal transmission and insulation between a detector head in the neutron shielding and signal processing circuits in the data acquisition room. The detector system exhibits a pulse-pair resolution of 1 mu s, an average spatial resolution of less than 2 mm full width at half-maximum in the sensitive region, and a two-dimensional homogeneity of 8.3% in all pixels. (C) 2013 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2013.05.118

Web of Science

Current status of BL06 beam line for VIN ROSE at J-PARC/MLF 査読有り

Masahiro Hino, Tatsuro Oda, Masaaki Kitaguchi, Norifumi L. Yamada, Hidenori Sagehashi, Yuji Kawabata, Hideki Seto

9TH INTERNATIONAL CONFERENCE ON POLARISED NEUTRONS IN CONDENSED MATTER INVESTIGATIONS   42 巻   頁： 136 - 141   2013年

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：ELSEVIER SCIENCE BV  

We started to construct new beam line for neutron spin echo spectrometers (VIN ROSE) at BL06 J-PARC/MLF from FY2011. The advantage of MIEZE is flexible sample environment and polarimetry analysis. The key device of NRSE is focusing mirror and high-m polarizing device. Both spectrometers are to use intensity gain of J-PARC and dedicated for small sample size. In this study, we show conceptional design of the VIN ROSE and current status of the BL06 beam line at J-PARC/MLF. (C) 2013 The Authors. Published by Elsevier B.V.

DOI： 10.1016/j.phpro.2013.03.187

Web of Science

Numerical simulation of a beam divergence correction for NRSE spectrometer using polygonal 2D-focusing supermirrors 査読有り

Tatsuro Oda, Masahiro Hino, Masaaki Kitaguchi, Yuji Kawabata

Physics Procedia   42 巻   頁： 121 - 124   2013年

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：Elsevier B.V.  

By inserting two-dimensional (2D) elliptical focusing mirrors between each pair of RSFs in neutron resonance spin echo spectrometer, the flight path lengths between the pair of RSFs can be made equal even for any divergent beam. We investigate numerically the feasibility of using polygonal 2D elliptical focusing mirrors as beam correction devices, and we show the relation of the energy resolution and the neutron intensity including effect of gravity. © 2013 The Authors.

DOI： 10.1016/j.phpro.2013.03.184

Web of Science

Scopus

Demonstration of focusing by a neutron accelerator 査読有り

Yasushi Arimoto, Peter Gertenbort, Sohei Imajo, Yoshihisa Iwashita, Masaaki Kitaguchi, Yoshichika Seki, Hirohiko M. Shimizu, Tamaki Yoshioka

Physical Review A   86 巻   頁： 023843   2012年8月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

Demonstration of focusing by a neutron accelerator 査読有り

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

PHYSICAL REVIEW A   86 巻 ( 2 )   2012年8月

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記述言語：英語  

DOI： 10.1103/PhysRevA.86.023843

Web of Science

Demonstration of optical thickness measurement using multilayer cold neutron interferometer 査読有り

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

5TH EUROPEAN CONFERENCE ON NEUTRON SCATTERING   340 巻   2012年

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IOP PUBLISHING LTD  

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-mu m-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

Web of Science

Research toward the development of compact neutron interference imaging instrument with gratings 査読有り

Yoshie Otake, Margie Olbinado, Yoshichika Seki, Katsuya Hirota, Yutaka Yamagata, Jungmyoung Ju, Tomohiro Adachi, Shinya Morita, Yoshihisa Iwashita, Masahiro Hino, Masahiro Ichikawa, Masaaki Kitaguchi, Toshio Takahashi, Hideki Yoshizawa, Seung Wook Lee, Wataru Yashiro, Atsushi Momose

5TH EUROPEAN CONFERENCE ON NEUTRON SCATTERING   340 巻   2012年

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IOP PUBLISHING LTD  

The neutron interference imaging experiment with two absorption gratings has been done. We develop new way to fabricate absorption gratings for neutron with the pitch of 150 mu m, 180 mu m, and 200 mu m. Compact imaging detector system is developed, whose weight is 2kg. Small break in an acrylic plate, the welded place of Nb plate were observed, it reveals that the neutron interference imaging method can become new method of a nondestructive inspection for reinforced plastics and composite material such as CFRP and so on.

DOI： 10.1088/1742-6596/340/1/012035

Web of Science

Present status of neutron fundamental physics at J-PARC 査読有り

Arimoto, Y; Funahashi, H; Higashi, N; Hino, M; Hirota, K; Imajo, S; Ino, T; Iwashita, Y; Katayama, R; Kitaguchi, M; Mishima, K; Muto, S; Oide, H; Otono, H; Seki, Y; Shima, T; Shimizu, HM; Taketani, K; Yamada, T; Yamashita, S; Yoshioka, T

PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS   2012 巻 ( 1 )   2012年

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1093/ptep/pts075

Web of Science

Scopus

Development of Two-Dimensional Scintillation Detectors for Neutron Spin Echo Spectrometers in J-PARC/MLF 査読有り

T. Nakamura, M. Katagiri, T. Hosoya, K. Toh, M. Kitaguchi, M. Hino, T. Ebisawa, K. Sakasai, K. Soyama

2012 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE RECORD (NSS/MIC)     頁： 222 - 225   2012年

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

A two-dimensional scintillation detector comprising of a single screen of flat neutron-sensitive scintillator with wavelength shifting fibers read out was developed. The detector was designed to meet the requirements for the modulated intensity by zero effort spectrometer (MIEZE) to be installed in the J-PARC/MLF. The ZnS/(B2O3)-B-10 scintillator screen that had 0.2 +/- 0.05 mm in thickness was implemented to the detector to minimize the time parallax within the scintillator. The detector design and the detector performances are presented.

DOI： 10.1109/NSSMIC.2012.6551098

Web of Science

Development of longitudinal-gradient magnet for time focusing of ultra-cold neutron with anisotropic inter-pole 査読有り

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   22 巻 ( 3 )   2012年

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掲載種別：研究論文（学術雑誌）  

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

Web of Science

Scopus

A compact TOF-SANS using focusing lens and very cold neutrons 査読有り

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   406 巻 ( 12 ) 頁： 2453 - 2457   2011年6月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：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 &lt;= 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) &lt;= q &lt;= 0.3 angstrom(-1) or 0.004 angstrom(-1) &lt;= q &lt;= 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

Web of Science

High resolution NRSE spectrometer with 2D-focusing supermirrors 査読有り

Masaaki Kitaguchi, Masahiro Hino, Yuji Kawabata, Seiji Tasaki, Ryuji Maruyama, Toru Ebisawa

PHYSICA B-CONDENSED MATTER   406 巻 ( 12 ) 頁： 2470 - 2472   2011年6月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

In the neutron resonance spin echo (NRSE) spectrometer [1] the divergent beam provides the deviation of the flight length, which makes the phase difference between neutron spin states and also decreases the contrast of the spin echo signals. The flight length can be adjusted by using parabolic focusing mirrors [11], which can be fabricated with replica technique. Correction for beam divergence effect in the NRSE spectrometer using 2D-focusing supermirrors will be discussed. (C) 2010 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.physb.2010.11.062

Web of Science

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

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

PHYSICA B-CONDENSED MATTER   406 巻 ( 12 ) 頁： 2424 - 2428   2011年6月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

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 He-3 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. (C) 2011 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.physb.2011.01.009

Web of Science

MIEZE型スピンエコーの開発 査読有り

日野正裕, 北口雅暁, 海老沢徹, 阿知波紀郎, 片桐政樹, BLEUEL Markus, 川端祐司, 及川健一, 前川藤夫, 林田洋寿, 山崎大, 瀬戸秀紀, 清水裕彦

日本原子力研究開発機構JAEA-Review(Web)   ( 2011-014 ) 頁： 2.4.8 (WEB ONLY)   2011年6月

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記述言語：日本語  

J-GLOBAL

A high S/N ratio spin flip chopper system for a pulsed neutron source 査読有り

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

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   634 巻   頁： S134 - S137   2011年4月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

We report a successful demonstration of a high SIN ratio spin flip chopper (SFC) system for pulsed neutron sources. The system consists of two SFCs and each SFC consists of a radio frequency (RF) flipper and Soller magnetic supermirrors. The aperture of the Soller mirror was 18 mm in width and 20 mm in height. The S/N ratio of the system was 306:1. This system is going to be installed to measure neutron lifetime precisely using the cold-neutron beam line, BL05 polarized-beam branch, at the Materials and Life Science Experimental Facility (MLF) in Japan Proton Accelerator Research Complex (J-PARC). (C) 2010 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2010.06.357

Web of Science

Polarization of very cold neutron using a permanent magnet quadrupole 査読有り

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   634 巻   頁： S17 - S20   2011年4月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：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

Web of Science

A transport optics for pulsed ultracold neutron sources 査読有り

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

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   634 巻   頁： S25 - S27   2011年4月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

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. (C) 2010 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2010.06.210

Web of Science

The performance of magnetic lens for focusing VCN-SANS 査読有り

M. Yamada, Y. Iwashita, T. Kanaya, M. Ichikawa, H. Tongu, S. J. Kennedy, H. M. Shimizu, K. Mishima, N. L. Yamada, K. Hirota, J. M. Carpenter, J. Lal, K. Andersen, P. Geltenbort, B. Guerard, G. Manzin, M. Hino, M. Kitaguchi, M. Bleuel

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   634 巻   頁： S156 - S160   2011年4月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

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 x 10(4)T/m(2) &lt;= g&apos; &lt;= 5.9 x 10(4) T/m(2). 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 (approximate to 3 mm) over a wavelength range of 30 angstrom &lt;= lambda &lt;= 48 angstrom in focal length of approximate to 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. (C) 2010 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2010.06.259

Web of Science

Longitudinal-gradient magnet for time focusing of ultra-cold neutrons 査読有り 国際誌

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

2ND INTERNATIONAL WORKSHOP ON THE PHYSICS OF FUNDAMENTAL SYMMETRIES AND INTERACTIONS (PSI)   17 巻   2011年

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：ELSEVIER SCIENCE BV  

A gradient DC magnet is designed using 3D magnetic field analysis code. This magnet, referred to as a B-0 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 &lt;= y &lt;= 3 cm at any z position in the spin-flipping region. Tracking simulations show that the B-0 magnet is capable of accepting UCNs in the velocity range 2.3 similar to 3.3 m/s.

DOI： 10.1016/j.phpro.2011.06.013

Web of Science

The novel method of focusing-sans with rotating magnetic sextupole lens and very cold neutrons

M. Yamada, Y. Iwashita, M. Ichikawa, H. Tongu, T. Kanaya, S. J. Kennedy, N. L. Yamada, H. M. Shimizu, K. Mishima, M. Hino, M. Kitaguchi, K. Hirota, P. Geltenbort, B. Guerard, G. Manzin, K. Andersen, J. Lal, J. M. Carpenter, M. Bleuel

IPAC 2010 - 1st International Particle Accelerator Conference     頁： 427 - 429   2010年12月

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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 ?15 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 ? ? λ ? 48 ? 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&#039; [4]. The measureable q range of this system were 0.009 ?-1 ? q ? 0.3 ?-1 or 0.004 ?-1 q ? 0.08 ?-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.

Multilayer Neutron Interferometer with Complete Path Separation 査読有り

Yoshichika Seki, Haruhiko Funahashi, Masaaki Kitaguchi, Masahiro Hino, Yoshie Otake, Kaoru Taketani, Hirohiko M. Shimizu

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   79 巻 ( 12 )   2010年12月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：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

Web of Science

Development of a pixel detector for ultra-cold neutrons 査読有り 国際共著 国際誌

Kawasaki, S., Ichikawa, G., Hino, M., Kamiya, Y., Kitaguchi, M., Komamiya, S., Sanuki, T., Sonoda, S.

Nuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers Detectors and Associated Equipment   615 巻 ( 1 )   2010年

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.nima.2010.01.011

Web of Science

Neutron Imaging of Industrial Components and Simulation Using VCAD System

Y.Yamagata, K.Hirota, S.morita, J.Ju, Y.Ohtake, H.Ypkota, T.Sera, H.Sunaga, Y.Kawabata, M.Hino, M.Kitaguchi, M.Sugiyama

KURRI Progress Report     頁： 116 - 116   2010年

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記述言語：英語  

Highly polarized very cold neutrons through a permanent magnet quadrupole 査読有り

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   404 巻 ( 17 ) 頁： 2643 - 2645   2009年9月

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掲載種別：研究論文（学術雑誌）  

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

Web of Science

Scopus

A beam divergence correction mirror for neutron resonance spin echo 査読有り 国際誌

R. Maruyama, M. Hino, H. Hayashida, M. Kitaguchi, N. Achiwa, D. Yamazaki, T. Ebisawa, K. Soyama

Physica B: Condensed Matter   404 巻 ( 17 ) 頁： 2594 - 2599   2009年9月

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記述言語：日本語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：Elsevier {BV}  

DOI： 10.1016/j.physb.2009.06.036

Development of neutron resonance spin flipper for high resolution spin echo spectrometer 査読有り 国際誌

Kitaguchi M, Hino M, Kawabata Y, Tasaki S, Hayashida H, Maruyama R, Ebisawa T

Physica B: Condensed Matter   404 巻 ( 17 ) 頁： 2590 - 2593   2009年9月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：Elsevier {BV}  

DOI： 10.1016/j.physb.2009.06.030

Scopus

その他リンク： http://orcid.org/0000-0002-9460-2357

A new MIEZE technique for investigating relaxation of magnetic nanoparticles 査読有り

Hirotoshi Hayashida, Masahiro Hino, Masaaki Kitaguchi, Norio Achiwa, Yuji Kawabata

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   600 巻 ( 1 ) 頁： 56 - 59   2009年2月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

There is no reduction in the contrast of a modulated intensity of zero effort (MIEZE) signal even when magnetic scattering occurs, whereas the contrasts of neutron spin echo and neutron resonance spin echo are reduced by more than a factor of two. However, since MIEZE measures both the intensities of quasielastic nuclear and magnetic scatterings, it is generally not easy to use a conventional MIEZE setup to simultaneously separate magnetic and nonmagnetic fluctuations of magnetic nanoscale particles. We propose a new MIEZE technique, which involves inserting a second analyzer and an additional pi-flipper that is able to distinguish between the magnetic and nonmagnetic quasielastic scattering intensities. We succeeded in observing superparamagnetic fluctuations of magnetite particles in a ferrofluid by using this new technique. (C) 2008 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2008.11.101

Web of Science

Shield evaluation of cold neutron curved guide tubes for J-PARC neutron resonance spin echo spectrometers 査読有り

Toru Ebisawa, Kazuhiko Soyama, Dai Yamazaki, Ryuji Maruyama, Seiji Tasaki, Yutaka Abe, Hiroyuki Hayashida, Masahiro Hino, Masaaki Kitaguchi, Yuji Kawabata, Koji Niita

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   600 巻 ( 1 ) 頁： 126 - 128   2009年2月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

it is planned that three neutron resonance spin echo spectrometers will be installed in the No. 17 beam port of JSNS. In order to install these three spectrometers in one beam port, the neutron incident beam system to be installed in No. 17 port cannot only supply three polarized neutron beams to these spectrometers, but should also create very low background levels of neutron and gamma rays in the experimental area. We report based on shield evaluations how to realize the low background level by using two highly curved neutron guide tubes with high quality supermirrors. (C) 2008 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2008.11.090

Web of Science

Development of devices for beam divergence correction in the high-resolution NRSE spectrometer 査読有り

Masaaki Kitaguchi, Masahiro Hino, Yuji Kawabata, Hirotoshi Hayashida, Seiji Tasaki, Ryuji Maruyama, Toru Ebisawa

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   600 巻 ( 1 ) 頁： 117 - 119   2009年2月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

Correction for beam divergence effect in the neutron resonance spin echo (NRSE) spectrometer will be discussed. The new type of devices called "coupling coils" is proposed to change the spin quantization axis for the correction. The feasibility of correction for the vertical divergence has been demonstrated by numerical calculations and Monte-Carlo simulations. (C) 2008 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2008.11.072

Web of Science

A study on reflectivity limit of neutron supermirror 査読有り

Masahiro Hino, Masaaki Kitaguchi, Hirotoshi Hayashida, Seiji Tasaki, Toru Ebisawa, Ryuji Maruyama, Norio Achiwa, Yuji Kawabata

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   600 巻 ( 1 ) 頁： 207 - 209   2009年2月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

We have fabricated m=2.9 NiC/Ti supermirror on a silicon wafer in which surface roughness is about 0.4 nm by ion beam sputtering technique. The reflectivity of supermirror at m=2.8 and 2.9 were 0.94 and 0.90, respectively. The reflectivity, of 0.94 at m=2.8 is in the vicinity of theoretical limit including the effects of absorption and incoherent scattering. We show the experimental results and theoretical expectation based on a simple Debye-Waller roughness model, and discuss realistic reflectivity limit of supermirror deposited on the ordinary silicon substrate. (c) 2008 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2008.11.125

Web of Science

A CCD-based Pixel Detector with Micron Spatial Resolution for Ultra Cold Neutrons 査読有り

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     頁： 1619 - +   2009年

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：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

Web of Science

Design of neutron beamline for fundamental physics at J-PARC BL05 査読有り 国際誌

K. Mishima, T. Ino, K. Sakai, T. Shinohara, K. Hirota, K. Ikeda, H. Sato, Y. Otake, H. Ohmori, S. Muto, N. Higashi, T. Morishima, M. Kitaguchi, M. Hino, H. Funahashi, T. Shima, J. Suzuki, K. Niita, K. Taketani, Y. Seki, H.M. Shimizu

Nucl. Instr. and Methods in Phys. Res. A   600 巻   頁： 342 - 345   2009年

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.nima.2008.11.087

A study of resolution function on a MIEZE spectrometer 査読有り 国際誌

H. Hayashida, M. Hino, M. Kitaguchi, Y. Kawabata, N. Achiwa

Measurement Science and Technology   19 巻 ( 3 )   2008年3月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

We have installed a MIEZE (modulated intensity by zero effort) spectrometer in the C3-1-2-2(MINE1) port at JRR-3M. In the MIEZE spectrometer, a sample is placed after the analyzer. Thus the contrast of the MIEZE signal can be observed without reduction even in the case of magnetic scattering where the signal for NSE (neutron spin echo) and NRSE (neutron resonance spin echo) instruments is less than half. The MIEZE signal is sensitive to the dispersion of neutron trajectories from the sample to the detector. In other words, the MIEZE signal is reduced only due to the dispersion even without in- and quasi-elastic scattering. We studied the correlation between experimental configuration and its resolution function using the Monte Carlo simulation. We prepared a magnetite ferrofluid sample with a typical particle diameter of 84 , and examined the simulation model by experiments. © 2008 IOP Publishing Ltd.

DOI： 10.1088/0957-0233/19/3/034006

Scopus

Correction for beam divergence effect in a NRSE spectrometer with high resolution 査読有り 国際誌

Kitaguchi M, Hino M, Kawabata Y, Hayashida H, Tasaki S, Maruyama R, Ebisawa T

Measurement Science and Technology   19 巻 ( 3 ) 頁： 034014   2008年1月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：{IOP} Publishing  

DOI： 10.1088/0957-0233/19/3/034014

Scopus

その他リンク： http://orcid.org/0000-0002-9460-2357

Partial decay widths of the φ into e⁺e^- and K⁺K^- pairs in 12 GeV p + a reactions at KEK-PS E325 査読有り

F. Sakuma, J. Chiba, H. En'yo, Y. Fukao, H. Funahashi, H. Hamagaki, M. Ieiri, M. Ishino, H. Kanda, M. Kitaguchi, S. Mihara, K. Miwa, T. Miyashita, T. Murakami, R. Muto, T. Nakura, M. Naruki, K. Ozawa, O. Sasaki, M. Sekimoto, T. Tabaru, K.H. Tanaka, M. Togawa, S. Yamada, S. Yokkaichi, Y. Yoshimura

Modern Physics Letters A   23 巻 ( 27-30 ) 頁： 2401 - 2404   2008年

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記述言語：英語  

DOI： 10.1142/S0217732308029472

Observation of MIEZE signal with an effective frequency of 1 MHz 査読有り

Hirotoshi Hayashida, Masaaki Kitaguchi, Masahiro Hino, Yuji Kawabata, Toru Ebisawa

PHYSICA B-CONDENSED MATTER   397 巻 ( 1-2 ) 頁： 144 - 146   2007年7月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

We developed a modulated intensity of zero effort (MIEZE) spectrometer with an effective frequency of I MHz. Three resonance spin flippers (RSFs) and two-dimentional position sensitive detector (2D-PSD) were used for the MIEZE spectrometer. The frequency of RSFs was 0.5 MHz and 2D-PSD works in TOF mode with 100 ns. The incident neutron wavelength was 0.81 nm and the distance between sample position and detector position was 0.5 in. The Fourier time was estimated to be 1.7 ns. The contrast of the I MHz echo signal was 0.4. (c) 2007 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.physb.2007.02.087

Web of Science

Moire fringes in a neutron spin interferometer 査読有り

Kaoru Taketani, Yoshichika Seki, Haruhiko Funahashi, Masahiro Hino, Masaaki Kitaguchi, Yoshic Otake, Hirohiko M. Shimizu

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   76 巻 ( 6 )   2007年6月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：PHYSICAL SOC JAPAN  

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.

DOI： 10.1143/JPSJ.76.064008

Web of Science

Development of a resonance spin flipper for NRSE/MIEZE on a pulsed neutron beam with an oscillating frequency of 500kHz 査読有り 国際誌

Hirotoshi Hayashida, Masaaki Kitaguchi, Masahiro Hino, Yuji Kawabata, Ryuji Maruyama, Toru Ebisawa

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   574 巻 ( 2 ) 頁： 292 - 296   2007年5月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier {BV}  

DOI： 10.1016/j.nima.2007.01.179

Nuclear-matter modification of decay widths in the phi -&gt; e(+)e(-) and phi -&gt; K+K- channels 査読有り

F. Sakuma, J. Chiba, H. En'yo, Y. Fukao, H. Funahashi, H. Hamagaki, M. Ieiri, M. Ishino, H. Kanda, M. Kitaguchi, S. Mihara, K. Miwa, T. Miyashita, T. Murakami, R. Muto, T. Nakura, M. Naruki, K. Ozawa, O. Sasaki, M. Sekimoto, T. Tabaru, K. H. Tanaka, M. Togawa, S. Yamada, S. Yokkaichi, Y. Yoshimura

PHYSICAL REVIEW LETTERS   98 巻 ( 15 )   2007年4月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：AMER PHYSICAL SOC  

The invariant mass spectra of phi -&gt; K+ K- are measured in 12 GeV p + A reactions in order to search for the in-medium modification of phi mesons. The observed K+ K- spectra are well reproduced by the relativistic Breit-Wigner function with a combinatorial background shape in three beta gamma regions between 1.0 and 3.5. The nuclear mass number dependence of the yields of the K+ K- decay channel is compared to the simultaneously measured e(+) e(-) decay channel for carbon and copper targets. We parameterize the production yields as sigma(A) = sigma(0)A(alpha) and obtain alpha(phi -&gt; K+K-) - alpha(phi -&gt; e+e-) to be 0: 14 +/- 0: 12. Limits are obtained for the partial decay widths of the phi mesons in nuclear matter.

DOI： 10.1103/PhysRevLett.98.152302

Web of Science

Evidence for in-medium modification of the meson at normal nuclear density 査読有り 国際誌

R. Muto, J. Chiba, H. En'Yo, Y. Fukao, H. Funahashi, H. Hamagaki, M. Ieiri, M. Ishino, H. Kanda, M. Kitaguchi, S. Mihara, K. Miwa, T. Miyashita, T. Murakami, T. Nakura, M. Naruki, K. Ozawa, F. Sakuma, O. Sasaki, M. Sekimoto, T. Tabaru, K.H. Tanaka, M. Togawa, S. Yamada, S. Yokkaichi, Y. Yoshimura

Physical Review Letters   98 巻 ( 4 )   2007年

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevLett.98.042501

Medium modification of vector mesons observed in 12 GeV p+A reactions 査読有り

M. Naruki, H. En'Yo, R. Muto, T. Tabaru, S. Yokkaichi, Y. Fukao, H. Funahashi, M. Ishino, H. Kanda, M. Kitaguchi, S. Mihara, K. Miwa, T. Miyashita, T. Murakami, T. Nakura, F. Sakuma, M. Togawa, S. Yamada, Y. Yoshimura, J. Chiba, M. Ieiri, O. Sasaki, M. Sekimoto, K.H. Tanaka, H. Hamagaki, K. Ozawa

Journal of Physics G: Nuclear and Particle Physics   34 巻 ( 8 ) 頁： S1059-S1063   2007年

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記述言語：英語  

DOI： 10.1088/0954-3899/34/8/S156

Study of in-medium meson modification in 12 GeV p + A reactions 査読有り

S. Yokkaichi, H. En'yo, M. Naruki, R. Muto, T. Tabaru, J. Chiba, M. Ieiri, M. Sekimoto, O. Sasaki, K.H. Tanaka, H. Funahashi, Y. Fukao, M. Kitaguchi, M. Ishino, H. Kanda, S. Mihara, T. Miyashita, K. Miwa, T. Murakami, T. Nakura, F. Sakuma, M. Togawa, S. Yamada, Y. Yoshimura, H. Hamagaki, K. Ozawa

International Journal of Modern Physics A   22 巻 ( 2-3 ) 頁： 397 - 405   2007年

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記述言語：英語  

DOI： 10.1142/S0217751X07035586

A test of MIEZE-reflectometer for study of surface and interface 査読有り

Masahiro Hino, Masaaki Kitaguchi, Hirotoshi Hayashida, Yuji Kawabata, Seiji Tasaki, Toru Ebisawa, Dai Yamazaki, Ryuji Maruyama, Keiji Tanaka, Naoya Torikai, Rintaro Inoue, Toshiji Kanaya

PHYSICA B-CONDENSED MATTER   385-86 巻   頁： 1125 - 1127   2006年11月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

We have installed a MIEZE-type spin echo spectrometer at the C3-1-2-2 (MINE1) port at the JRR-3 M in the Japan Atomic Energy Agency. By combining neutron reflectometry and the MIEZE, it is possible to detect inelastic and quasi-elastic scattering on the surface and at the interface. We have succeeded in measuring a MIEZE signal for which the Fourier time is up to 0.8 us. Though the Fourier time is small, we tested several samples by the MIEZE reflectometer. (c) 2006 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.physb.2006.05.388

Web of Science

Neutron resonance spin echo and MIEZE spectrometer development project in Japan 査読有り

Yuji Kawabata, Masahiro Hino, Masaaki Kitaguchi, Hirotoshi Hayashida, Seiji Tasaki, Toru Ebisawa, Dai Yamazaki, Ryuji Maruyama, Hideki Seto, Michihiro Nagao, Toshiji Kanaya

PHYSICA B-CONDENSED MATTER   385-86 巻   頁： 1122 - 1124   2006年11月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

A project for the development of neutron spin echo spectrometers using neutron resonance spin flippers with a pulsed neutron source has been launched. The system consists of a set of three different machines, a MIEZE spectrometer, a high intensity NRSE spectrometer and a high energy resolution Neutron resonance spin echo (NRSE) spectrometer. The design target of this system when installed in J-PARC ;is as follows: (1) MIEZE: 0.01 &lt; Q &lt; 3.5 (I/A), 20 &lt; t &lt; 1300 (ps); (2) high intensity NRSE: 0.005 &lt; Q &lt; 3.1 (I/A), I &lt; t &lt; 170 (ns); (3) high resolution NRSE: 0.003 &lt; Q &lt; 1.2 (I/A), 0.03 &lt; t &lt; 1 (ps). (c) 2006 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.physb.2006.05.387

Web of Science

Moire fringes of cold neutron with large divergence angle 査読有り

Kaoru Taketani, Haruhiko Funahashi, Yoshichika Seki, Masahiro Hino, Masaaki Kitaguchi, Yoshie Otake, Hirohiko M. Shimizu

PHYSICA B-CONDENSED MATTER   385-86 巻   頁： 1222 - 1224   2006年11月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：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

Web of Science

Development of neutron resonance spin flipper for high resolution NRSE spectrometer 査読有り

Masaaki Kitaguchi, Masahiro Hino, Yuji Kawabata, Hirotoshi Hayashida, Seiji Tasaki, Ryuji Maruyama, Dai Yamazaki, Toru Ebisawa, Naoya Torikai

PHYSICA B-CONDENSED MATTER   385-86 巻   頁： 1128 - 1130   2006年11月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

Neutron spin echo (NSE) is one of the techniques with the highest energy resolution for measurement of quasi-elastic scattering. In neutron resonance spin echo (NRSE), two separated neutron resonance spin flippers (RSFs) replace a homogeneous static magnetic field for spin precession in a conventional NSE. We have made a new type of RSF with pure aluminum wires in order to reduce the scattering from the surface. Test experiments have been performed at cold neutron beam line MINE1 at JRR-3M reactor in JAERI and the beam line CN3 at KUR The spin-flip probability was higher than 0.95 at a neutron wavelength of 0.81 ran and a RSF frequency of 100 kHz. (c) 2006 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.physb.2006.05.389

Web of Science

Development of large-m polarizing neutron supermirror fabricated by using ion beam sputtering instrument at KURRI 査読有り

Masahiro Hino, Hirotoshi Hayashida, Masaaki Kitaguchi, Yuji Kawabata, Masayasu Takeda, Ryuji Maruyama, Toru Ebisawa, Naoya Torikai, Tetsuya Kume, Seiji Tasaki

PHYSICA B-CONDENSED MATTER   385-86 巻   頁： 1187 - 1189   2006年11月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

Authors have succeeded in fabricating m = 3.9 Fe/Si and m = 5 Fe/Ge polarizing neutron supermirrors with high reflectivity using ion beam sputtering instrument installed at KURRI. The reflectivity of up-spin neutron are above 0.80 and 0.67 for the m = 3.9 Fe/Si and m = 5 Fe/Ge supermirrors with external magnetic field of 45 mT, in which number of layers are 1600 and 3750, respectively. The polarization efficiencies are about 0.90. (c) 2006 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.physb.2006.05.404

Web of Science

First observation of phi-meson mass modification in nuclear medium 査読有り

R. Muto, J. Chiba, H. En'yo, Y. Fukao, H. Funahashi, H. Hamagaki, M. Ieiri, M. Ishino, H. Kanda, M. Kitaguchi, S. Mihara, K. Miwa, T. Miyashita, T. Murakami, T. Nakura, M. Naruki, M. Nomachi, K. Ozawa, F. Sakuma, O. Sasaki, H. D. Sato, M. Sekimoto, T. Tabaru, K. H. Tanaka, M. Togawa, S. Yamada, S. Yokkaichi, Y. Yoshimura

NUCLEAR PHYSICS A   774 巻   頁： 723 - 726   2006年8月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

We have measured e(+)e(-) invariant mass spectra in 12 GeV p + A interactions at the KEK Proton-Synchrotron. The aim of the experiment is to detect possible in-medium modification of vector mesons at normal nuclear density. We used carbon and copper targets to study the nuclear size dependence of the e(+)e(-) invariant mass spectra. A significant enhancement on the low-mass side of the phi meson peak was observed in the low beta gamma region (beta gamma(phi) &lt; 1.25) in the copper data. On the other hand, in the higher beta gamma region (beta gamma(phi) &lt; 1.25), both the spectral shapes obtained from carbon and copper targets were consistent with the expected one from the simulation. This observation is consistent with a picture of the phi modification in a nucleus, i.e. normal nuclear density, because such an effect should be visible only for slowly moving mesons produced in a larger nucleus.

DOI： 10.1016/j.nuclphysa.2006.06.123

Web of Science

Nuclear mass number dependence of inclusive production of omega and phi mesons in 12 GeV p plus A collisions 査読有り

T. Tabaru, H. En'yo, R. Muto, M. Naruki, S. Yokkaichi, J. Chiba, M. Ieiri, O. Sasaki, M. Sekimoto, K. H. Tanaka, H. Funahashi, Y. Fukao, M. Kitaguchi, M. Ishino, H. Kanda, S. Mihara, T. Miyashita, K. Miwa, T. Murakami, T. Nakura, F. Sakuma, M. Togawa, S. Yamada, Y. Yoshimura, H. Hamagaki, K. Ozawa

PHYSICAL REVIEW C   74 巻 ( 2 )   2006年8月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：AMERICAN PHYSICAL SOC  

The inclusive production of omega and phi mesons is studied in the backward region of the interaction of 12 GeV protons with polyethylene, carbon, and copper targets. The mesons are measured in e(+)e(-) decay channels. The production cross sections of the mesons are presented as functions of rapidity y and transverse momentum p(T). The nuclear mass number dependences (A dependences) are found to be A(0.710 +/- 0.021(stat)+/- 0.037(syst)) for omega mesons and A(0.937 +/- 0.049(stat)+/- 0.018(syst)) for phi mesons in the region of 0.9 &lt; y &lt; 1.7 and p(T)&lt; 0.75 GeV/c.

DOI： 10.1103/PhysRevC.74.025201

Web of Science

Observation of MIEZE signal with an effective frequency of 1 MHz 査読有り

H. Hayashida, M. Kitaguchi, M. Hino, Y. Kawabata, T. Ebisawa

KURRI Progress Report     頁： 172   2006年4月

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掲載種別：研究論文（学術雑誌）  

Scopus

Study of new layer structure for large-m polarizing neutron supermirror 査読有り

M. Hino, M. Kitaguchi, H. Hayashida, Y. Kawabata, T. Ebisawa, R. Maruyama, T. Kume, S. Tasaki

KURRI Progress Report     頁： 171   2006年4月

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掲載種別：研究論文（学術雑誌）  

Scopus

Experimental signature of medium modifications for rho and omega mesons in the 12 GeV p+A reactions 査読有り

M Naruki, Y Fukao, H Funahashi, M Ishino, H Kanda, M Kitaguchi, S Mihara, K Miwa, T Miyashita, T Murakami, T Nakura, F Sakuma, M Togawa, S Yamada, Y Yoshimura, H En'yo, R Muto, T Tabaru, S Yokkaichi, J Chiba, M Ieiri, O Sasaki, M Sekimoto, KH Tanaka, H Hamagaki, K Ozawa

PHYSICAL REVIEW LETTERS   96 巻 ( 9 )   2006年3月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：AMER PHYSICAL SOC  

The invariant mass spectra of e(+)e(-) pairs produced in 12 GeV proton-induced nuclear reactions are measured at the KEK Proton Synchrotron. On the low-mass side of the omega meson peak, a significant enhancement over the known hadronic sources has been observed. The mass spectra, including the excess, are well reproduced by a model that takes into account the density dependence of the vector meson mass modification, as theoretically predicted.

DOI： 10.1103/PhysRevLett.96.092301

Web of Science

Development of neutron multiplayer mirrors on beam splitting etalons for pulsed neutrons 査読有り

H. Funahashi, M. Kitaguchi, M. Hino, Y. Seki, K. Taketani

KURRI Progress Report     頁： 173-   2006年

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記述言語：英語   掲載種別：研究論文（大学，研究機関等紀要）  

KEK-PS E325 Collaboration 査読有り

R. Muto, J. Chiba, H. En'yo, Y. Fukao, H. Funahashi, H. Hamagaki, M. Ieiri, M. Ishino, H. Kanda, M. Kitaguchi, S. Mihara, K. Miwa, T. Miyashita, T. Murakami, T. Nakura, M. Naruki, M. Nomachi, K. Ozawa, F. Sakuma, O. Sasaki, H.D. Sato, M. Sekimoto, T. Tabaru, K.H. Tanaka, M. Togawa, S. Yamada, S. Yokkaichi, Y. Yoshimura

Nuclear Physics A   774 巻 ( 1-4 ) 頁： 942-   2006年

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記述言語：英語  

DOI： 10.1016/j.nuclphysa.2006.07.009

Experimental Study of in-medium meson modification at the KEK 12 GeV PS(Hadrons at finite density) 査読有り

Yokkaichi S., Chiba J., En'yo H., Fukao Y., Funahashi H., Hamagaki H., Ieiri M., Ishino M., Kanda H., Kitaguchi M., Mihara S., Miyashita T., Miwa K., Murakami T., Muto R., Nakura T, Naruki M., Ozawa K., Sakuma F., Sasaki O., Sekimoto M., Tabaru T., Tanaka K. H., Togawa M., Yamada S., Yoshimura Y.

素粒子論研究   114 巻 ( 2 ) 頁： B7 - B12   2006年

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：素粒子論グループ 素粒子論研究 編集部  

Invariant mass spectra of low-mass vector mesons in the e^+e^- channel are measured in 12 GeV p+C and p+Cu reactions (√<s>=5.1 GeV) at the KEK 12 GeV Proton Synchrotron. A significant excess is observed on the low-mass side of the ω meson peak over the known hadronic sources in the data of both C and Cu targets. Furthermore, an excess is found below the φ meson peak in the Cu target data in the slowest βγ region (βγ<1.25). They can be interpreted as signatures of the spectral modification of vector mesons in cold nuclear matter.

DOI： 10.24532/soken.114.2_B7

CiNii Books

Radiation induced surface activation on SUS304 rod surface coated with thin film layer formed by vacuum evaporation method 査読有り

J. Zhang, Y. Saito, K. Mishima, M. Hino, M. Kitaguchi, Y. Kawabata

KURRI Progress Report     頁： 177-   2006年

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記述言語：英語  

J-PARC中性子共鳴スピンエコー分光器の概念設計II

日野 正裕, 川端 祐司, 田崎 誠司, 丸山 龍治, 北口 雅暁, 海老沢 徹, 阿知波 紀郎

日本原子力学会 年会・大会予稿集   2005 巻 ( 0 ) 頁： 117 - 117   2005年

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出版者・発行元：一般社団法人 日本原子力学会  

中性子散乱は、物質研究に対する最も有力な手段の一つであり、現在、世界最高性能を有する大強度パルス中性子源（J-PARC）が東海村に建設中である。中性子スピンエコー法は、中性子のスピンという自由度を導入したことにより、入射中性子のエネルギー分解能に制限されること無く、高エネルギー分解能かつ高中性子強度を同時に実現する。その結果、分子鎖のサイズに対応する空間分解能が約0.1 - 100nm において、NMR等の他の分光法では測定不可能であったエネルギー分解能 5x10-9 - 2x10-3 eVの動的過程が観測できる。我々は中性子スピン干渉の原理を用いることで従来のスピンエコー装置の設計概念を大幅に改良し、J-PARCに最適なスローダイナミックス研究の分光器を提案している。現在Mcstasといシミュレーションコードを用いて、ビームラインの中性子輸送の定量的評価も行っている。当日はビームラインの詳細や開発の進捗状況を説明する。

DOI： 10.11561/aesj.2005s.0.117.0

Cold-neutron interferometry using beam splitting etalons 査読有り

M Kitaguchi, H Funahashi, T Nakura, K Taketani, M Hino, Y Otake, HM Shimizu

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   529 巻 ( 1-3 ) 頁： 190 - 193   2004年8月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

A novel type of cold-neutron interferometer based on a pair of new devices named 'beam splitting etalons (BSE)' has been developed. The parallelism between the two planes in each BSE and the equality of gap thicknesses of the two BSEs ensure the alignment of four independent multilayer mirrors in the interferometer within the precision required by the three-dimensional coherency of the beam. Various arrangements of BSEs enables us to build new types of coherent optical systems for cold neutrons. (C) 2004 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2004.04.203

Web of Science

Experimental signature of in-medium mass modification of vector mesons at normal nuclear density 査読有り

R Muto, J Chiba, H En'yo, Y Fukao, H Funahashi, H Hamagaki, M Ieiri, M Ishino, H Kanda, M Kitaguchi, S Mihara, K Miwa, T Miyashita, T Murakami, T Nakura, M Naruki, M Nomachi, K Ozawa, F Sakuma, O Sasaki, HD Sato, M Sekimoto, T Tabaru, KH Tanaka, M Togawa, S Yamada, S Yokkaichi, Y Yoshimura

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS   30 巻 ( 8 ) 頁： S1023 - S1026   2004年8月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：IOP PUBLISHING LTD  

We measured invariant mass spectra of e(+)e(-) pairs produced in 12 GeV p+A interaction to investigate in-medium mass modification of vector mesons. We observed an enhancement over the known hadronic sources on the low-mass side of the omega meson mass peak. The obtained rho/omega ratio indicates that this enhancement mainly results from rho mesons whose mass was modified in nuclear matter. We performed a toy model calculation based on the prediction using the QCD sum rule. It reproduced well the tendency of our data.

DOI： 10.1088/0954-3899/30/8/051

Web of Science

Spectrometer for measurements of phi mesons in nuclear matter produced through 12-GeV p + A reactions 査読有り

M Sekimoto, J Chiba, H Funahashi, H Hamagaki, M Ieiri, M Ishino, M Kitaguchi, S Mihara, T Miyashita, T Murakami, R Muto, M Naruki, M Nomachi, K Ozawa, F Sakuma, O Sasaki, T Tabaru, KH Tanaka, S Yamada, S Yokkaichi, Y Yoshimura, H En&apos;yo

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   516 巻 ( 2-3 ) 頁： 390 - 405   2004年1月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

A spectrometer was constructed to measure the invariant mass spectra of rho, omega and phi mesons through their e(+)e(-) or K(+)K(-) decays. The KEK experiment E325 was successfully carried out using the new spectrometer, and observed the signature of an in-medium mass modification of the rho and/or omega mesons for the first time. The details of the spectrometer are described. (C) 2003 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2003.08.168

Web of Science

Beam splitting etalons with a spacing of 189μm thickness

M.Kitaguchi, H.Funahashi, K.Taketani, M.Hino, S.Tasaki, R.Maruyama, Y.Otake, H.M.Shimizu

Activity report on neutron scattering research   11 巻   頁： 219 - 0   2004年

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記述言語：英語   掲載種別：研究論文（大学，研究機関等紀要）  

Recent progress of cold-neutron interferometer using multilayer mirrors

Masaaki Kitaguchi

hamon   14 巻 ( 3 ) 頁： 204 - 208   2004年

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担当区分：筆頭著者,　責任著者   記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：The Japanese Society for Neutron Science  

DOI： 10.5611/hamon.14.204

Non-dispersive measurement of the transverse coherence length of a cold neutron beam 査読有り

M Kitaguchi, H Funahashi, T Nakura, K Taketani, M Hino, Y Otake, HM Shimizu

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   72 巻 ( 12 ) 頁： 3079 - 3081   2003年12月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：PHYSICAL SOC JAPAN  

We have measured the transverse coherence length of a cold neutron beam using Jamin-type cold neutron spin interferometer. It can control the transverse shift between the superposed two paths with no dispersion. We have observed clearly that the contrast of interference fringes varies according to the coherence function determined by the collimation of the beam. The measured coherence length was consistent with the estimate by the standard deviation of the neutron transverse momentum distribution.

DOI： 10.1143/JPSJ.72.3079

Web of Science

Direct Measurement of the Transverse Coherence Length of Cold Neutron Beam 査読有り

Masaaki Kitaguchi, Haruhiko Funahashi, Terunao Nakura, Masahiro Hino, Hirohiko M. Shimizu

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   72 巻   頁： 38 - 41   2003年11月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：PHYSICAL SOC JAPAN  

We have developed new cold-neutron interferometer of Jamin-type. Clear interference fringes with the contrast of 60% were observed. This is the first success of neutron interferometer using four independent multilayer mirrors. By using this new interferometer, we have measured the transverse coherence length of cold neutron beam directly. The transverse dislocation between the two paths can be controlled with no dispersion. The measured coherence length was consistent with the estimate given by the transverse momentum distribution of incident beam.

DOI： 10.1143/JPSJS.72SC.38

Web of Science

Measurement of invariant mass spectra of vector meson decaying in nuclear matter 査読有り

M Naruki, J Chiba, H En'yo, H Funahashi, H Hamagaki, M Ieiri, M Ishino, H Kanda, M Kitaguchi, S Mihara, T Miyashita, T Murakami, R Muto, M Nomachi, K Ozawa, F Sakuma, O Sasaki, HD Sato, M Sekimoto, T Tabaru, KH Tanaka, S Yadama, S Yokkaichi, Y Yoshimura

NUCLEAR PHYSICS A   721 巻   頁： 297C - 300C   2003年6月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

The experiment E325 has been performed at KEK PS. The data taking has been completed on February 2002. We have measured the invariant mass spectrum of e(+)e(-)pairs based on the statistics 100 times larger than our previous publication[3]. On the low-mass side of rho/omega meson, an enhancement over the known hadronic sources has been observed. The obtained rho/omega ratio in the spectrum is smaller than the ratio in pp interaction. This suggests that rho meson mass has been modified in nuclear matter.

DOI： 10.1016/S0375-9474(03)01054-6

Web of Science

Cold-neutron interferometer of the Jamin type 査読有り

M Kitaguchi, H Funahashi, T Nakura, M Hino, HM Shimizu

PHYSICAL REVIEW A   67 巻 ( 3 ) 頁： 033609   2003年3月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：AMERICAN PHYSICAL SOC  

A cold-neutron interferometer using four independent multilayer mirrors is demonstrated. We have observed interference fringes with a contrast of 60%. The interferometer is based on a pair of devices using etalons with an air gap of 9.75 mum in spacing. The optical system is equivalent to the Jamin-type interferometer, which allows much larger spatial separation between the two coherent beams than the previous type of multilayer interferometer to broaden the applicability of neutron interferometry.

DOI： 10.1103/PhysRevA.67.033609

Web of Science

Measurement of invariant mass spectra of vector meson decaying in nuclear matter at KEK-PS 査読有り

R Muto, J Chiba, H En'yo, Y Fukao, H Funahashi, H Hamagaki, M Ieiri, M Ishino, H Kanda, M Kitaguchi, A Mihara, K Miwa, T Miyashita, T Murakami, T Nakura, M Naruki, M Nomachi, K Ozawa, F Sakuma, O Sasaki, M Sekimoto, T Tabaru, KH Tanaka, M Togawa, S Yamada, S Yokkaichi, Y Yoshimura

INTERSECTIONS OF PARTICLE AND NUCLEAR PHYSICS   698 巻   頁： 138 - 141   2003年

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：AMER INST PHYSICS  

We measured invariant mass spectra of e(+)e(-) pairs produced in 12-GeV p + A interaction to investigate in-medium mass modification of vector mesons. We observed the excess over the known hadronic sources below the omega meson mass peak. The obtained rho/omega ratio and velocity dependence of excess/omega ratio imply that this excess mainly results from p meson whose miss was modified in nuclear matter.

Web of Science

Direct measurement of the transverse coherence length of cold neutron beam

M.Kitaguchi, H.Funahashi, T.Nakura, K.Taketani, M.Hino, H.M.Shimizu

Activity report on neutron scattering research   10 巻   頁： 259 - 0   2003年

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担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（大学，研究機関等紀要）  

Novel interferometer for cold neutrons using a pair of etalons 査読有り

M. Kitaguchi, H. Funahashi, T. Nakura, M. Hino, H.M. Shimizu

Nuclear Physics A   721 巻   頁： 481c-484c   2003年

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記述言語：英語  

DOI： 10.1016/S0375-9474(03)01104-7