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Ninomiya, Kazuaki*; Omote, Sayuri*; Sato, Katsuya; Narumi, Issey*; Shimizu, Nobuaki*
JAEA-Review 2013-059, JAEA Takasaki Annual Report 2012, P. 115, 2014/03
Ninomiya, Kazuaki*; Nomura, Tomoyo*; Sato, Katsuya; Narumi, Issei; Shimizu, Nobuaki*
JAEA-Review 2012-046, JAEA Takasaki Annual Report 2011, P. 108, 2013/01
Ninomiya, Kazuaki*; Soda, Hiroshi*; Sato, Katsuya; Narumi, Issei; Shimizu, Nobuaki*
JAEA-Review 2011-043, JAEA Takasaki Annual Report 2010, P. 111, 2012/01
Ninomiya, Kazuaki*; Soda, Hiroshi*; Sato, Katsuya; Narumi, Issei; Shimizu, Nobuaki*
JAEA-Review 2010-065, JAEA Takasaki Annual Report 2009, P. 78, 2011/01
no abstracts in English
Mishima, Kenji*; Ino, Takashi*; Sakai, Kenji; Shinohara, Takenao; Hirota, Katsuya*; Ikeda, Kazuaki*; Sato, Hiromi*; Otake, Yoshie*; Omori, Hitoshi*; Muto, Suguru*; et al.
Nuclear Instruments and Methods in Physics Research A, 600, p.342 - 345, 2009/02
Times Cited Count：27 Percentile：85.04(Instruments & Instrumentation)A new beamline for a fundamental physics experiment is under construction at BL05 port in the Materials and Life Science Facility (MLF) at Japan Proton Accelerator Research Complex (J-PARC), this beamline is designed using novel techniques of neutron optics and it is termed "Neutron Optics and Physics". The beam from the moderator is deflected by multi-channel supermirrors and split into three branches for individual experiments. In this study, we have optimized the design of the beam optics and shields using the Monte Carlo simulation package PHITS. The neutron fluxes of beams are expected to be 
cm
str
sMW, 
cm
sMW, 
cmsMW, with polarization of 99.8%.
Tanuma, Koji; Shimizu, Kazuaki; Hiruta, Toshihito; Kimura, Naoyuki; Suzuki, Mitsutoshi; Ito, Toru
Kaku Busshitsu Kanri Gakkai (INMM) Nihon Shibu Dai-28-Kai Nenji Taikai Rombunshu (CD-ROM), 7 Pages, 2007/00
JAEA is developing practical use of an intruder automated monitoring system aimed at early detection of intruders or suspicious objects entering into a site boundary or protected areas, etc. The system is aimed at rationalization and efficiency of guard functions by using monitoring camera and image analysis software to watch the action of intruder or suspicious individual. This paper introduces the results of comparative investigations, including the performance and function of intrusion detection, expansion of the system, the test results of environmental resistance over a long period of time (ex. climate conditions, small animals, weeds, behavior of intruders, etc.). The effectiveness of the monitoring system as a physical protection measure, and the scope of application other than nuclear facility are evaluated using typical foreign image analysis software.
Oku, Takayuki; Yamada, Satoru; Sasao, Hajime*; Suzuki, Junichi; Shinohara, Takenao*; Hirota, Katsuya*; Ikeda, Kazuaki*; Tsuzaki, Tsuyoshi*; Kiyanagi, Yoshiaki*; Furusaka, Michihiro*; et al.
Physica B; Condensed Matter, 385-386(2), p.1225 - 1228, 2006/11
Times Cited Count：10 Percentile：44.47(Physics, Condensed Matter)We have developed a magnetic neutron lens based on an extended Halbach-type permanent sextupole magnet with magnet pieces of NEOMAX-44H, -35EH and high saturation magnetization material, permendule. The aperture size of the magnet is 35 mm in diameter and the magnet length is 2,400 mm. The magnet generates a sextupole magnetic field 
with a gradient coefficient 
=10,600 T/m
inside the aperture, where 
is a distance from the magnet center axis. To prevent neutrons from hitting and reflecting at the inner surface of the magnet, the surface is covered with cadmium (Cd) sheets and also Cd pinhole slits with size of 30 mm in diameter are positioned in series inside the magnet aperture, resulting in the effective diameter of 30 mm. The neutron focusing property of the magnet is investigated by using pulsed polarized neutrons. The obtained results are discussed with the precise simulation results. Its application to the focusing-geometry small-angle neutron scattering experiments is also discussed.
Oku, Takayuki; Suzuki, Junichi; Sasao, Hajime*; Yamada, Satoru; Furusaka, Michihiro*; Adachi, Tomohiro*; Shinohara, Takenao*; Ikeda, Kazuaki*; Shimizu, Hirohiko
Physica B; Condensed Matter, 356(1-4), p.126 - 130, 2005/02
Times Cited Count：11 Percentile：45.47(Physics, Condensed Matter)We have developed a magnetic neutron lens (MNL) based on a sextupole magnet. A neutron beam, which is incident to the sextupole magnet, either converges or diverges depending on the neutron spin state. Small-angle neutron scattering in focusing geometry (FSANS) was proposed to improve the q-resolution and/or measuring efficiency. The MNL is considered to be the most suitable focusing device for FSANS experiments using a polarized neutron beam, since it focuses the polarized neutron beam free from neutron attenuation and scattering by substances. Recently, we have developed the MNLs with sufficiently large apertures and strong focusing power for FSANS experiments. In this study, we evaluate the focusing property of the MNLs for the polarized neutron beam, and performed FSANS experiments using the MNL. The obtained results are discussed.
Oku, Takayuki; Suzuki, Junichi; Sasao, Hajime*; Adachi, Tomohiro*; Shinohara, Takenao*; Ikeda, Kazuaki*; Morishima, Takahiro*; Sakai, Kenji*; Kiyanagi, Yoshiaki*; Furusaka, Michihiro*; et al.
Nuclear Instruments and Methods in Physics Research A, 529(1-3), p.116 - 119, 2004/08
Times Cited Count：21 Percentile：77.78(Instruments & Instrumentation)As a neutron has a magnetic dipole moment, it is accelerated in a magnetic field gradient. Thus, we can control a neutron trajectory free from neutron beam attenuation and scattering using the magnetic field gradient. A sextupole magnetic field functions as a neutron focusing and defocusing lens depending on the neutron spin state. The neutron focusing effect was experimentally verified using a 6-piece permanent sextupole magnet. For the application in practical neutron scattering experiments, a sextupole magnet with a sufficiently large aperture accompanied with strong focusing power is demanded. Recently, a superconducting sextupole magnet, a Halbach-type permanent sextupole magnet and a sextupole pulse electro-magnet have been developed in a project of the development and application of neutron optics. These magnets will be dedicated to practical uses in neutron scattering experiments. In this paper, current status of the development of the magnetic neutron lenses is reported, and their application in the neutron scattering experiments is discussed.
Tamai, Hiroshi; Matsukawa, Makoto; Kurita, Genichi; Hayashi, Nobuhiko; Urata, Kazuhiro*; Miura, Yushi; Kizu, Kaname; Tsuchiya, Katsuhiko; Morioka, Atsuhiko; Kudo, Yusuke; et al.
Plasma Science and Technology, 6(1), p.2141 - 2150, 2004/02
Times Cited Count：2 Percentile：6.49(Physics, Fluids & Plasmas)The dominant issue for the the modification program of JT-60 (JT-60SC) is to demonstrate the steady state reactor relevant plasma operation. Physics design on plasma parameters, operation scenarios, and the plasma control method are investigated for the achievement of high-
. Engineering design and the R&D on the superconducting magnet coils, radiation shield, and vacuum vessel are performed. Recent progress in such physics and technology developments is presented.
Ishida, Shinichi; Abe, Katsunori*; Ando, Akira*; Chujo, T.*; Fujii, Tsuneyuki; Fujita, Takaaki; Goto, Seiichi*; Hanada, Kazuaki*; Hatayama, Akiyoshi*; Hino, Tomoaki*; et al.
Nuclear Fusion, 43(7), p.606 - 613, 2003/07
no abstracts in English
Ishida, Shinichi; Abe, Katsunori*; Ando, Akira*; Cho, T.*; Fujii, Tsuneyuki; Fujita, Takaaki; Goto, Seiichi*; Hanada, Kazuaki*; Hatayama, Akiyoshi*; Hino, Tomoaki*; et al.
Nuclear Fusion, 43(7), p.606 - 613, 2003/07
Times Cited Count：33 Percentile：69.14(Physics, Fluids & Plasmas)no abstracts in English
Oku, Takayuki*; Sakai, Kenji*; Adachi, Tomohiro*; Ikeda, Kazuaki*; Shimizu, Hirohiko*; Maruyama, Ryuji*; Hino, Masahiro*; Tasaki, Seiji*; Kiyanagi, Yoshiaki*; Kamiyama, Takashi*; et al.
Physica B; Condensed Matter, 335(1-4), p.226 - 229, 2003/07
Times Cited Count：7 Percentile：39.38(Physics, Condensed Matter)no abstracts in English
Oshima, Takayuki; Iwasaki, Keita*; Shimizu, Kazuaki
Heisei-14-Nendo Tokyo Daigaku Sogo Gijutsu Kenkyukai Gijutsu Hokokushu, 3 Pages, 2003/03
no abstracts in English
Yanagisawa, Kazuaki; Kume, Tamikazu; Makuuchi, Keizo; Tagawa, Seiichi*; Chino, Mitsuo*; Inoue, Tomio*; Takehisa, Masaaki*; Hagiwara, Miyuki*; Shimizu, Masahiko*
Journal of Nuclear Science and Technology, 39(10), p.1120 - 1124, 2002/10
Times Cited Count：3 Percentile：23.41(Nuclear Science & Technology)no abstracts in English
Ninomiya, Hiromasa; Kitsunezaki, Akio; Shimizu, Masatsugu; Kuriyama, Masaaki; JT-60 Team; Kimura, Haruyuki; Kawashima, Hisato; Tsuzuki, Kazuhiro; Sato, Masayasu; Isei, Nobuaki; et al.
Fusion Science and Technology, 42(1), p.7 - 31, 2002/07
Times Cited Count：13 Percentile：27.27(Nuclear Science & Technology)In order to establish scientific basis for the sustainment of highly integrated performance required in the advanced steady-state operation, JT-60U has been optimizing the discharge control scenarios of improved confinement plasmas and expanding the operation regions. Promising results toward the steady-state tokamak were obtained. The detail of such results is reported. JFT-2M has performed advanced and basic research for the development of high performance tokamak plasma as well as the structural material for a fusion reactor. The toroidal ripple reduction with ferritic steel plates outside the vacuum vessel was successfully demonstrated. No adverse effects were observed in the pre-testing on compatibility between ferritic steel plates, covering ~20% of the inside wall of the vacuum vessel, and plasma. The results of TRIAM-1M is also reported.
Tsuji, Hiroshi; Okuno, Kiyoshi*; Thome, R.*; Salpietro, E.*; Egorov, S. A.*; Martovetsky, N.*; Ricci, M.*; Zanino, R.*; Zahn, G.*; Martinez, A.*; et al.
Nuclear Fusion, 41(5), p.645 - 651, 2001/05
Times Cited Count：57 Percentile：83.02(Physics, Fluids & Plasmas)no abstracts in English
Hatae, Takaki; Nagashima, Akira; Kitamura, Shigeru; *; Yoshida, Hidetoshi*; Naito, Osamu; Yamashita, Osamu; Shimizu, Kazuaki; *; Kondoh, Takashi
Review of Scientific Instruments, 70(1), p.772 - 775, 1999/01
Times Cited Count：62 Percentile：93.65(Instruments & Instrumentation)no abstracts in English
; Shimizu, Kazuaki; ; Chida, Toru; Mizugaki, Toshio; Oi, Yoshihiro
JAERI-Tech 94-023, 106 Pages, 1994/10
no abstracts in English
Oku, Takayuki; Yamada, Satoru; Suzuki, Junichi; Mishima, Kenji*; Shinohara, Takenao*; Ikeda, Kazuaki*; Hirota, Katsuya*; Sato, Hiromi*; Shimizu, Hirohiko*
no journal, ,
no abstracts in English
