研究者詳細 - 清水　裕彦

論文 - 清水　裕彦

分割表示 475 件中 281 - 300 件目／全件表示 >>

13aSK-8 J-PARC MLFでのドップラーシフターを用いた超冷中性子の生成(13aSK LFV検出器・中性子実験・光検出器,素粒子実験領域)

今城想平, 藤岡宏之, 清水裕彦, 三島賢二, 吉岡瑞樹, 北口雅暁, 日野正裕

日本物理学会講演概要集 65.2.1 巻 ( 0 ) 頁： 18 2010年

22pBF-4 J-PARCにおける超冷中性子生成のためのドップラーシフターの開発(22pBF 加速器電源・J-PARC・中性子源・FFAG加速器(電源・負荷・配線の対称化),ビーム物理領域)

今城想平, 藤岡宏之, 清水裕彦, 三島賢二, 吉岡瑞樹, 北口雅暁, 日野正裕

日本物理学会講演概要集 65.1.1 巻 ( 0 ) 頁： 142 2010年

23pHT-8 偏極^3He中性子スピンフィルターの^3Heガス偏極度の評価手段の開発(23pHT 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))

吉良弘, 坂口佳史, 奥隆之, 鈴木淳市, 中村充孝, 新井正敏, 遠藤康夫, 加倉井和久, 有本靖, 猪野隆, 清水裕彦, 神山崇, 佐藤他加志, 佐藤孝一, 加美山隆, 鬼柳善明, 堤健之, 大山研司, 平賀晴弘, 山田和芳

日本物理学会講演概要集 65.1.4 巻 ( 0 ) 頁： 1016 2010年

23pHT-7 偏極^3He中性子スピンフィルターのガラスセルの開発(23pHT 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))

坂口佳史, 吉良弘, 奥隆之, 鈴木淳市, 中村充孝, 新井正敏, 遠藤康夫, 加倉井和久, 武田全康, 脇本秀一, 山崎大, 小泉智, 有本靖, 猪野隆, 清水裕彦, 神山崇, 大山研司, 平賀晴弘, 堤健之, 山田和芳

日本物理学会講演概要集 65.1.4 巻 ( 0 ) 頁： 1016 2010年

23aEF-4 focusing VCN-SANSによる水溶性3ブロック共重合体(PEO-PPO-PEO)溶液の温度相転移現象の観測(23aEF 高分子・ゲル,領域12(ソフトマター物理,化学物理,生物物理))

山田雅子, 岩下芳久, 金谷利治, 市川雅浩, 頓宮拓, 清水裕彦, 山田悟史, 三島賢二, 広田克也, 日野正裕, 北口雅暁

日本物理学会講演概要集 65.1.2 巻 ( 0 ) 頁： 396 2010年

Development of modulating permanent magnet sextupole lens for focusing of pulsed cold neutrons

Yamada M., Iwashita Y., Ichikawa M., Tongu H., Fujisawa H., Shimizu H.M., Ino T., Mishima K., Taketani K., Morishima T., Mutou S., Yoshioka T., Oku T., Sakai K., Shinohara T., Suzuki J.I., Hirota K., Otake Y., Sato H., Seki Y., Kawasaki S., Otono H., Komamiya S., Yamashita S., Kamiya Y., Geltenbort P.

Proceedings of the 24th Linear Accelerator Conference, LINAC 2008 頁： 263 - 265 2009年12月

出版者・発行元：Proceedings of the 24th Linear Accelerator Conference, LINAC 2008

Cold neutron beams can be focused by a strong sextupole magnetic field. A permanent magnet sextupole lens whose focusing strength can be synchronously modulated at the rate of pulsed cold neutron beams is under development. This device should keep the focal point for pulsed neutron beams whose wavelength spreads as a function of time of flight. This kind of device improves the utilization of valuable neutrons and saves experiment time and costs. It will raise linac based small neutron sources as a good counter part to large powerful neutron facilities. Experimental results that were obtained at Institute Laue-Langevin (ILL) are also described.

Scopus

A small angle neutron scattering (SANS) experiment using very cold neutrons (VCN)

Bleuel, M; Carpenter, JM; Micklich, BJ; Geltenbort, P; Mishima, K; Shimizu, HM; Iwashita, Y; Hirota, K; Hino, M; Kennedy, SJ; Lal, J

PHYSICA B-CONDENSED MATTER 404 巻 ( 17 ) 頁： 2629 - 2632 2009年9月

出版者・発行元：Physica B: Condensed Matter

This paper describes the results of SANS measurements of small samples using the very cold neutron (VCN) beam of the PF2 instrument at the Institut Laue Langevin (ILL), France. In addition to a classical SANS pinhole collimation, the experiment used a polarizing supermirror as a monochromator and a magnetic sextupole lens to focus the neutron beam in order to gain intensity and avoid any material in the neutron beam besides the sample.

DOI： 10.1016/j.physb.2009.06.048

Web of Science

Scopus

Simulation study of a pulsed neutron focusing using a pulsed electromagnetic lens coupled with a permanent magnet

Iwashita H., Iwasa H., Hiraga F., Kamiyama T., Kiyanagi Y., Suzuki J., Shinohara T., Oku T., Shimizu H.M.

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 600 巻 ( 1 ) 頁： 129 - 131 2009年2月

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

A pulsed sextupole electromagnetic lens with suitably controlled time-dependent magnetic field can in principle focus pulsed neutrons at the same focal point over a wide range of wavelength as the lens removes aberrations. However, in fact, it is difficult to focus neutrons over a wide range of wavelength because attenuation of a practical pulsed sextupole electromagnet is faster than an ideal case. We have devised a method of canceling the difference between the practical pulsed sextupole magnetic field and the ideal magnetic field with the use of a permanent sextupole magnet. We performed simulation calculations to investigate the feasibility of this method, and it was shown that focusing wavelength range spread compared with the case using a pulsed magnetic lens only. This result indicates the usefulness of the method. © 2008.

DOI： 10.1016/j.nima.2008.11.105

Scopus

13aSA-1 重力場による超冷中性子の量子状態観測 : ILL/PF2における実験結果I(中性子,カシミール力,ポジトロニウム,素粒子論領域)

市川豪, 川崎真介, 駒宮幸男, 神谷好郎, 佐貫智行, 清水裕彦, 日野正裕, 北口雅暁

日本物理学会講演概要集 64.2.1 巻 ( 0 ) 頁： 27 2009年