研究者詳細 - 清水　裕彦

18aSJ-1 J-PARC/BL05中性子寿命測定実験 : 中性子フラックスの決定(18aSJ 中性子・ニュートリノ,素粒子実験領域) Open Access

三島賢二, 山下了, 山田崇人, 片山領, 東直, 横山晴道, 角野浩史, 榊原理紗, 杉野智昭, 広田克也, 清水裕彦, 北口雅暁, 田中元気, 角直幸, 音野瑛俊, 吉岡瑞樹, 北原龍之介, 岩下芳久, 生出秀行, 嶋達志, 関義親, 猪野隆, 竹谷薫

日本物理学会講演概要集 69.2.1 巻 ( 0 ) 頁： 18 2014年

18aSJ-2 J-PARC/BL05中性子寿命実験 : TPC検出器の改良及び評価(18aSJ 中性子・ニュートリノ,素粒子実験領域) Open Access

北原龍之介, 岩下芳久, 山田崇人, 片山領, 東直, 横山晴道, 角野浩史, 三島賢二, 山下了, 榊原理紗, 杉野智昭, 広田克也, 清水裕彦, 北口雅暁, 田中元気, 角直幸, 音野瑛俊, 吉岡瑞樹, 生出秀行, 関義親, 嶋達志, 竹谷薫, 猪野隆

日本物理学会講演概要集 69.2.1 巻 ( 0 ) 頁： 18 2014年

28aTR-7 J-PARC/BL05中性子寿命測定実験 : 現状と展望(28aTR 実験核物理領域,ビーム物理領域,素粒子実験領域合同,J-PARCと原子核素粒子実験(合同),実験核物理領域) Open Access

三島賢二, 山下了, 山田崇人, 片山領, 東直, 横山晴道, 角野浩史, 榊原理紗, 杉野智昭, 広田克也, 清水裕彦, 北口雅暁, 田中元気, 音野瑛俊, 吉岡瑞樹, 生出秀行, 猪野隆, 竹谷薫, 嶋達志, 関義親

日本物理学会講演概要集 69.1.1 巻 ( 0 ) 頁： 87 2014年

29pSD-7 J-PARC/BL05中性子寿命測定実験におけるイベント同定に伴う系統誤差の理解と今後の展望(29pSD ニュートリノ振動,中性子,素粒子実験領域) Open Access

山田崇人, 横山晴道, 東直, 片山領, 角野浩史, 三島賢二, 山下了, 榊原理紗, 杉野智昭, 広田克也, 清水裕彦, 北口雅暁, 田中元気, 音野瑛俊, 吉岡瑞樹, 生出秀行, 関義親, 猪野隆, 竹谷薫, 嶋達志

日本物理学会講演概要集 69.1.1 巻 ( 0 ) 頁： 36 2014年

29pSD-6 J-PARC/BL05中性子寿命測定実験の入射フラックス測定の安定性とその系統誤差の評価(29pSD ニュートリノ振動,中性子,素粒子実験領域) Open Access

榊原理紗, 杉野智昭, 広田克也, 清水裕彦, 北口雅暁, 東直, 横山晴道, 山田崇人, 片山領, 角野浩史, 三島賢二, 山下了, 田中元気, 音野瑛俊, 吉岡瑞樹, 生出秀行, 関義親, 猪野隆, 竹谷薫, 嶋達志

日本物理学会講演概要集 69.1.1 巻 ( 0 ) 頁： 36 2014年

29pSD-5 J-PARC/BL05中性子寿命測定実験の現状(29pSD ニュートリノ振動,中性子,素粒子実験領域) Open Access

北口雅暁, 榊原理紗, 杉野智昭, 広田克也, 清水裕彦, 横山晴道, 東直, 山田崇人, 片山領, 角野浩史, 三島賢二, 山下了, 田中元気, 音野瑛俊, 吉岡瑞樹, 生出秀行, 関義親, 猪野隆, 竹谷薫, 嶋達志

日本物理学会講演概要集 69.1.1 巻 ( 0 ) 頁： 36 2014年

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

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

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

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

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 ( 1 ) 2014年

出版者・発行元：Journal of Physics: Conference Series

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

DOI： 10.1088/1742-6596/528/1/012010

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

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

Ipac 2013 Proceedings of the 4th International Particle Accelerator Conference 頁： 1187 - 1189 2013年12月

出版者・発行元：Ipac 2013 Proceedings of the 4th International Particle Accelerator Conference

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

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

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

PLANETARY AND SPACE SCIENCE 87 巻頁： 106 - 114 2013年10月

出版者・発行元：Planetary and Space Science

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

DOI： 10.1016/j.pss.2013.08.017

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

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

ASTROPARTICLE PHYSICS 44 巻頁： 76 - 90 2013年4月

出版者・発行元：Astroparticle Physics

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

DOI： 10.1016/j.astropartphys.2013.01.008

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

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

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 82 巻 2013年1月

磁気レンズを用いた中性子線の制御技術とその応用

清水裕彦

精密工学会誌 79 巻 ( 9 ) 頁： 809 - 812 2013年

23pSD-3 J-PARCでの中性子EDM測定を目指したUCNリバンチャーの改良(中性子の物理,素粒子実験領域) Open Access

今城想平, 岩下芳久, 清水裕彦, 北口雅暁, 吉岡瑞樹, 有本靖, 関義親

日本物理学会講演概要集 68.2.1 巻 ( 0 ) 頁： 28 2013年

26aXZB-2 J-PARC偏極中性子散乱装置POLANO計画の状況(26aXZB 領域10,ビーム物理領域合同 X線・粒子線(中性子),ビーム物理領域) Open Access

大山研司, 横尾哲也, 伊藤晋一, 鈴木純一, 佐藤卓, 岩佐和晃, 吉良弘, 坂口佳史, 奥隆之, 猪野隆, 平賀晴弘, 松浦直人, 藤田全基, 富安啓輔, 木村宏之, 鈴木淳市, 清水裕彦, 有馬孝尚, 武田全康, 金子耕士, 日野正裕, 武藤豪, 野尻浩之

日本物理学会講演概要集 68.1.1 巻 ( 0 ) 頁： 146 2013年

26aXZB-2 J-PARC偏極中性子散乱装置POLANO計画の状況(26aXZB 領域10,ビーム物理領域合同 X線・粒子線(中性子),領域10(誘電体,格子欠陥,X線・粒子線,フォノン)) Open Access

日本物理学会講演概要集 68.1.4 巻 ( 0 ) 頁： 1012 2013年

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

松本悟, 吉岡瑞樹, 清水裕彦, 嶋達志, 猪野隆, 北口雅暁, 三島賢二

日本物理学会講演概要集 68.1.1 巻 ( 0 ) 頁： 96 2013年

27aRF-2 J-PARC MLFにおける中性子ドップラーシフターのUCN出力増強(27aRF 素粒子実験領域,実験核物理領域,理論核物理領域,ビーム物理領域合同 J-PARCと原子核素粒子実験,素粒子実験領域) Open Access

今城想平, 岩下芳久, 清水裕彦, 吉岡瑞樹, 北口雅暁, 三島賢二, 猪野隆, 有本靖, 關義親

日本物理学会講演概要集 68.1.1 巻 ( 0 ) 頁： 29 2013年

Fundamental physics with slow neutrons Open Access

Shimizu H.

Proceedings of Science 2013-December 巻 2013年

出版者・発行元：Proceedings of Science

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

DOI： 10.22323/1.208.0010