研究者詳細 - 清水　裕彦

論文 - 清水　裕彦

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Characteristics of superconducting series array tunnel junctions for heavy ions

Sato, H; Kurakado, M; Takizawa, Y; Shiki, S; Ohno, M; Shimizu, HM; Morita, K; Morimoto, K; Kaji, D; Akiyama, T

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 15 巻 ( 2 ) 頁： 595 - 598 2005年6月

出版者・発行元：IEEE Transactions on Applied Superconductivity

Heavy ion detection experiments were carried out with superconducting series array tunnel junctions. 40Ar beam from linear accelerator was introduced to a cryostat and stopped in a substrate on which series array tunnel junctions were fabricated. An energy resolution of 4.2% was obtained for 191 MeV 40 Ar, but linearity proved poor for energy ranges from 136 MeV to 191 MeV. © 2005 IEEE.

DOI： 10.1109/TASC.2005.849951

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The effect of X-ray irradiating superconducting tunnel junctions on Al <inf>2</inf>O<inf>3</inf> and LiNbO<inf>3</inf> substrates

Taino T., Hoshino K., Nakano R., Otani C., Myoren H., Kawase K., Sato H., Shimizu H.M., Takada S.

IEEE Transactions on Applied Superconductivity 15 巻 ( 2 PART I ) 頁： 599 - 601 2005年6月

出版者・発行元：IEEE Transactions on Applied Superconductivity

We have developed a phononmediated radiation detector using Nb-based superconducting tunnel junctions (STJs). The STJs are fabricated on a substrate as an absorber of the radiation, and a substantial amount of emergent phonons with an energy above the energy gap are detected. The performance of the detector depends on the collection efficiency of the phonons. A selection of an appropriate substrate is required for optimizing the detector performance. We fabricated Nb-based STJs on a Al2O3 and a LiNbO 3 substrates, and compared the pulse heights of substrate phonon events due to X-ray irradiation to the substrates. We found that the maximum pulse height of the phonon events for the LiNbO3 substrate was about twice of that for the Al2O3 substrate, so that these spectra which was obtained from two STJs showed different shapes, especially the peak due to phonon events. © 2005 IEEE.

DOI： 10.1109/TASC.2005.849953

Scopus

中性子磁気レンズ用Nb_3Snコイルの開発(2)

岡本佳祐, 中村一也, 関佳隆, 大野雅人, 高尾智明, 大内徳人, 新冨孝和, 土屋清澄, 安達智宏, 清水裕彦, 奥隆之, 鈴木淳市, 木村諭, 花井哲, 浦田昌身, 渡辺郁男

低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity 72 巻頁： 212 2005年5月

CS-7-3 基板吸収型STJ素子を用いたTHz波検出器(CS-7. 超伝導サブテラヘルツエレクトロニクス, エレクトロニクス2)

明連広昭, 中野蘭, 星野耕一, 吉村正太, 田井野徹, 大谷知行, 渋谷孝幸, 佐藤広海, 清水裕彦, 高田進, 川瀬晃道

電子情報通信学会総合大会講演論文集 2005 巻 ( 2 ) 頁： "S - 13"-"S-14" 2005年3月

Detection of α particles with superconducting series-junction detectors -: art. no. 083503

Kurakado, M; Sato, H; Takizawa, Y; Shiki, S; Shimizu, HM

APPLIED PHYSICS LETTERS 86 巻 ( 8 ) 頁： 1 - 3 2005年2月

出版者・発行元：Applied Physics Letters

Superconducting series-junction detectors present the possibility of highly practical radiation detectors with high detection efficiencies, high count rates, and high energy-resolution even for radiation that is difficult to detect efficiently with traditional radiation detectors. A series-junction detector with an effective volume of 8×8×0.4 mm3 has shown that the efficiency of signal charge production is high despite its large volume. The position dependence of signal heights of a series-junction detector with an effective area of 1.5×1.5 mm2 was corrected, and the energy resolution was improved from 2.9% to 0.42%. © 2005 American Institute of Physics.

DOI： 10.1063/1.1866509

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Development of polarized neutron optics

Shimizu, HM; Oku, T; Suzuki, J; Furusaka, M; Kiyanagi, Y

PHYSICA B-CONDENSED MATTER 356 巻 ( 1-4 ) 頁： 121 - 125 2005年2月

A demonstration study of focusing geometry SANS using a magnetic lens

Oku, T; Suzuki, J; Sasao, H; Yamada, S; Furusaka, M; Adachi, T; Shinohara, T; Ikeda, K; Shimizu, HM

PHYSICA B-CONDENSED MATTER 356 巻 ( 1-4 ) 頁： 126 - 130 2005年2月

出版者・発行元：Physica B: Condensed Matter

A demonstration study of focusing geometry small-angle neutron scattering (FSANS) experiment was successfully performed using a superconducting sextupole magnet as a neutron focusing device and a polarized cold neutron beam. The obtained small-angle neutron scattering intensities from monodispersed SiO 2 spherical particles were discussed in terms of the scattering function taking into account the q-resolution. © 2004 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.physb.2004.10.062

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Transmission bender for polarizing neutrons

Krist, T; Peters, J; Shimizu, HM; Suzuki, J; Oku, T

PHYSICA B-CONDENSED MATTER 356 巻 ( 1-4 ) 頁： 197 - 200 2005年2月

出版者・発行元：Physica B: Condensed Matter

A system of a polarizing solid state bender and a collimator was built and tested. The bender consists of a stack of thin silicon wafers coated with polarizing FeCo-Si supermirrors. The stack is deflected in the middle by one wafer thickness. Inserted in an unpolarized neutron beam this device works as a spin splitter by transmitting the spin down component without any change in its flight path and reflecting the spin up component. With a collimator behind the bender it can be selected which one of the spin components is transmitted. In this way a transmission polarizer for neutrons with wavelengths above 4 Å was built which has a total length of less than 10 cm. © 2004 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.physb.2004.10.076

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Some experimental studies on time-of-flight radiography using a pulsed neutron source Open Access

Kiyanagi, Y; Sakamoto, N; Iwasa, H; Kamiyama, T; Hiraga, F; Sato, S; Sagehashi, H; Ino, T; Furusaka, M; Suzuki, J; Gorin, A; Manuilov, I; Ryazantsev, A; Kuroda, K; Sakai, K; Tokanai, F; Miyasaka, H; Adachi, T; Oku, T; Ikeda, K; Suzuki, S; Morimoto, K; Shimizu, HM

IEEE TRANSACTIONS ON NUCLEAR SCIENCE 52 巻 ( 1 ) 頁： 371 - 374 2005年2月

出版者・発行元：IEEE Transactions on Nuclear Science

We are developing a fiber type two-dimentional (2-D) position-sensitive detector having a spatial resolution less than 0.5 mm in order to use it in the time-of-flight (TOF) measurements. The detector performance was examined, and some experiments on the TOF radiography were performed using this detector. The results indicated that the detector could be applied successfully to the TOF measurement and that the TOF radiography was very useful since it gave more informative data than those obtained by the conventional radiography using a broad energy band. © 2005 IEEE.

DOI： 10.1109/TNS.2005.844299

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Boron based oxide scintillation glass for neutron detection

Ishii, M; Kuwano, Y; Asai, T; Asaba, S; Kawamura, M; Senguttuvan, N; Hayashi, T; Kobayashi, M; Nikl, M; Hosoya, S; Sakai, K; Adachi, T; Oku, T; Shimizu, HM

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 537 巻 ( 1-2 ) 頁： 282 - 285 2005年1月

出版者・発行元：Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

The luminescence property of Ce-doped oxide glass having B and Li with large absorption coefficient for neutron was investigated by optical transmittance, alpha particle, and neutron irradiation. The light output of the B 2O 3-Li 2O:CeO 2 glass system increased with the increase in B 2O 3 and CeO 2. It was observed that the decay time which showed composition dependence varied in the range 30-45 ns. Although the light output by neutron irradiation is 9.2% of Li-glass, low density and high neutron absorption with short decay time make this new boron-based glass scintillator useful for neutron detection. (c) 2001 Elsevier Science. All rights reserved © 2004 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2004.08.027

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13pSE-2 重力場による超冷中性子の量子化状態測定 : 高位置分解能UCN測定器の開発(13pSE 超冷中性子/DAQ・トリガー,素粒子実験領域)

川崎真介, 佐貫智行, 大川英希, 園田真也, 駒宮幸男, 東保男, 久米達哉, 江波和宏, 日野正裕, 清水裕彦

日本物理学会講演概要集 60.2.1 巻 ( 0 ) 頁： 14 2005年

27aWH-3 超伝導転移端温度計(TES)を用いた低エネルギー粒子線検出器の開発(2)(検出器,実験核物理)

大野雅史, 佐藤広海, 滝澤慶之, 志岐成友, 倉門雅彦, 有吉誠一郎, 三島賢二, 池田時浩, 清水裕彦

日本物理学会講演概要集 60.1.1 巻 ( 0 ) 頁： 81 2005年

27aWH-1 中性子β崩壊測定の予備実験(検出器,実験核物理)

三島賢二, 山田悟, 広田克也, 篠原武尚, 志岐成友, 佐藤広海, 大野雅史, 鈴木淳市, 清水裕彦

日本物理学会講演概要集 60.1.1 巻 ( 0 ) 頁： 80 2005年

26pZA-5 SPring-8/LEPSビームラインでのπ^0,η光生成のphoton beam asymmetry の測定(中間子生成,ハドロン構造,実験核物理)

木野幸一, 石川貴嗣, 岡村憲有, 斉藤雄高, 清水筆, 鈴木耕拓, 米村博樹, 岩田高広, 川村知行, 田島靖久, 吉田浩司, 戸井裕也, 松田達郎, 内田誠, 郡英輝, 住浜水季, 長谷川勝一, 堀田智明, 松村徹, 中野貴志, 椎野裕樹, 藤村寿子, 新山雅之, 宮部学, 村松憲仁, 菅谷頼仁, 大橋裕二, 伊達伸, 依田哲彦, 都留常暉

日本物理学会講演概要集 60.1.1 巻 ( 0 ) 頁： 77 2005年

25aYS-2 放物面型多層膜スーパーミラーによる熱・冷中性子収束光学素子の開発(X線・粒子線(X線),領域10(誘電体, 格子欠陥, X線・粒子線, フォノン物性))

池田一昭, 安達智宏, 篠原武尚, 森嶋隆裕, 広田克也, 三島賢二, 佐藤広海, 清水裕彦, 森田晋也, 郭建強, 鈴木亨, 渡邉裕, 上原嘉宏, 林偉民, 大森整, 日野正裕, 田崎誠司, 奥隆之, 鈴木淳市, 曽山和彦, 大山研司, 平賀晴弘

日本物理学会講演概要集 60.1.4 巻 ( 0 ) 頁： 907 2005年

24pWJ-11 重力場による超冷中性子の量子化状態の測定装置の開発(光検出器・ニュートリノ・他,素粒子論)

川崎真介, 佐貫智行, 大川英樹, 関口豊和, 駒宮幸男, 日野正裕, 清水裕彦, 東保夫, 久米達哉, 江波和宏

日本物理学会講演概要集 60.1.1 巻 ( 0 ) 頁： 22 2005年

13pSE-3 重力場による超冷中性子の量子化状態測定 : 半導体検出器の薄膜蒸着試験(13pSE 超冷中性子/DAQ・トリガー,素粒子実験領域)

園田真也, 川崎真介, 大川英希, 駒宮幸男, 日野正裕, 清水裕彦, 佐貫智行

日本物理学会講演概要集 60.2.1 巻 ( 0 ) 頁： 14 2005年

A possible cosmic ray source in TeV and EeV from the direction around the Cygnus Loop

Takeda M., Nagano M., Watanabe Y., Chikawa M., Fukushima M., Hayashida N., Honda K., Inoue N., Kadota K., Kakimoto F., Kamata K., Kawaguchi S., Kawakami S., Kawasaki Y., Kawasumi N., Mase K., Mizobuchi S., Ohoka H., Osone S., Sakaki N., Sakurai N., Sasano M., Shimizu H.M., Shinozaki K., Teshima M., Torii R., Tsushima I., Uchihori Y., Yamamoto T., Yoshida S., Yoshii H.

29th International Cosmic Ray Conference, ICRC 2005 7 巻頁： 179 - 182 2005年

出版者・発行元：29th International Cosmic Ray Conference, ICRC 2005

With the Akeno Giant Air Shower Array (AGASA), we published the small-scale anisotropy of cosmic rays with energies above 1019 eV. Among them, a broad cluster - BC1 around (20h 50m, 32°) - has interesting characteristics: The time distribution of members of the BC1 cluster is burst-like around MJD50000 , and this cluster locates near the famous supernova remnant: the Cygnus Loop. From this BC1 direction, two observations from the Tibet and Milagro experiments have been reported. In this report, we summarize the results from the whole observation time of AGASA and the Akeno 1km2 array experiment, and the relation with the observations from the Tibet and Milagro experiments is discussed.

Scopus

Characteristics of multi-anode photomultiplier tube for the EUSO focal surface detector

Kawasaki Y., Bertaina M.E., Sakaki N., Sato M., Shimizu H.M., Takizawa Y., Uchihori Y., Inoue N., Ohtsu I., Inoue K., Sawabe T., Kajino F.

29th International Cosmic Ray Conference, ICRC 2005 8 巻頁： 165 - 168 2005年

出版者・発行元：29th International Cosmic Ray Conference, ICRC 2005

The focal surface of the EUSO telescope consists of a few hundred thousand of pixels of photo-detectors and detects air showers as mosaic images. The strongest requirement for the focal surface detector is the maximization of the photon detection efficiency together with the uniformity over the focal surface. We have developed a new type of multi-anode photomultiplier tube (MAPMT). The tatal photon detection efficiency has improved than before by about 2.1 times.

Scopus

Development of elementary cell module for the EUSO focal surface detector Open Access

Takizawa Y., Kawasaki Y., Sato M., Bertaina M.E., Ebisuzaki T., Shimizu H.M., Sawabe T., Kajino F., Sato I., Takara H., Isono N., Ameri M., Cuneo S., Fontanelli F., Gracco V., Musico P., Pallavicini M., Petrolini A., Sannino M., Siccardi F., Thea A.

29th International Cosmic Ray Conference, ICRC 2005 8 巻頁： 213 - 216 2005年

出版者・発行元：29th International Cosmic Ray Conference, ICRC 2005

The Focal Surface detector of EUSO (Extreme Universe Space Observatory) consists of small autonomous functional units (elementary cell, EC) assembled in larger modules (Photo Detector Modules, PDM). Each EC is conceived as an array of 4 multianode photomultipliers (MAPMTs). We have developed EC structure for the current baseline of the multianode photomultiplier (MAPMT, R8900-M36). As the mechanical characteristics of the PDM structure (e.g. robustness to thermal and launch shocks, vibrations at launch) will affect the EC structure, we have also built a trial PDM, consisting of 36 MAPMTs (9 ECs) arranged in a cartesian layout. The purpose of such trial PDM is to develop and optimize the EC structure.

Open Access

Scopus

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