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Suzuki, Masatoshi; Hazawa, Tomoya; Ishizaki, Yoichi*; Obara, Michio*; Inada, Katsutoshi*; Yonekawa, Mitsunori*; Wakita, Hiroshi*
JAERI-Tech 2004-060, 153 Pages, 2004/09
JAERI-Tech-2004-060.pdf:9.78MB
The cold neutron source (CNS) at JRR-3 was constructed for the purpose of improving the utilization performance of the reactor along the lines of upgrade program. There are two methods for extracting cold neutrons from a reactor, one is to filter a small fraction of cold neutrons in the Maxwellian spectrum of reactor neutrons while the other is to increase the fraction of cold neutron by inserting a cryogenic moderator. The latter is adopted as CNS facilities at almost all cases, and liquid hydrogen and its cooling system are equipped with a cold neutron source at many neutron facilities just like JRR-3. Cold neutrons generated in a cold source are extracted through a neutron guide tube, and are utilized for the purpose of neutron beam experiments such as neutron scattering which study the structures of atoms and molecules in the materials and life science fields. This report summarizes the operation data and the main technical issues which were recorded in the whole operation period from commencement date in 1989 to March 2004.
Tamura, Itaru; Suzuki, Masatoshi; Hazawa, Tomoya; Moriai, Atsushi; Hori, Naohiko; Sasajima, Fumio; Soyama, Kazuhiko
Nuclear Instruments and Methods in Physics Research A, 529(1-3), p.234 - 237, 2004/08
Times Cited Count：4 Percentile：30.89(Instruments & Instrumentation)Thermal neutron guides at JRR-3 reactor have been upgraded from Nickel mirrors to Ni/Ti multilayer supermirrors. We performed the characteristics experiment of neutron beams transmitted through supermirror neutron guides. Neutron fluxes at the end of the thermal neutron guides were measured by the gold foil activation method on March 2003. We have confirmed that neutron fluxes at the end of thermal neutron guide increases by 6 times. The neutron spectra were also measured at the end of the thermal neutron guides by the time-of-flight method. The wavelength range for the neutron beam is extended and the shorter wavelength neutrons, which had been filtered by the characteristics of curved neutron guides before upgrade, were observed. In this paper, we have performed several Monte Carlo simulation codes using the McStas package in the consideration of the performance of fabricated supermirrors and its alignment errors for the purpose of estimation of instruments performance. We discuss the comparison of the experimental results with results of simulation.
Kawabata, Yuji*; Ebisawa, Toru*; Tasaki, Seiji*; Suzuki, Masatoshi; Soyama, Kazuhiko
JAERI-Research 2000-019, p.20 - 0, 2000/03
JAERI-Research-2000-019.pdf:0.83MB
no abstracts in English
Soyama, Kazuhiko; ; *; Ebisawa, Toru*; Tasaki, Seiji*
Journal of Nuclear Science and Technology, 35(11), p.750 - 758, 1998/11
Times Cited Count：8 Percentile：57.28(Nuclear Science & Technology)no abstracts in English
Soyama, Kazuhiko; ; Ebisawa, Toru*
JAERI-Research 98-067, 61 Pages, 1998/10
JAERI-Research-98-067.pdf:6.88MB
no abstracts in English
Soyama, Kazuhiko; ; Ichikawa, Hiroki; *
Genshiryoku Kogyo, 43(10), p.36 - 41, 1997/10
no abstracts in English
Soyama, Kazuhiko; Suzuki, Masatoshi
ASRR-V: Proc., 5th Asian Symp. on Research Reactors, 2, p.894 - 900, 1996/00
no abstracts in English
Soyama, Kazuhiko; Suzuki, Masatoshi; Kodaira, Tsuneo; Ebisawa, Toru*; *; Tasaki, Seiji*
Physica B; Condensed Matter, 213-214, p.951 - 953, 1995/00
Times Cited Count：2 Percentile：18.64(Physics, Condensed Matter)no abstracts in English
*; Suzuki, Masatoshi; *; *
Journal of Nuclear Science and Technology, 30(10), p.1050 - 1058, 1993/10
Times Cited Count：10 Percentile：69.75(Nuclear Science & Technology)no abstracts in English
Suzuki, Masatoshi; *; Ichikawa, Hiroki
JAERI-M 92-201, 17 Pages, 1993/01
no abstracts in English
*; Suzuki, Masatoshi; Tsuruno, Akira; Onishi, Nobuaki
Physica B; Condensed Matter, 180-181, p.987 - 990, 1992/00
Times Cited Count：7 Percentile：43.5(Physics, Condensed Matter)no abstracts in English
; Suzuki, Masatoshi; Takahashi, Hidetake; Onishi, Nobuaki; *; *; *; *
Journal of Nuclear Science and Technology, 27(12), p.1138 - 1146, 1990/12
no abstracts in English
Suzuki, Masatoshi; ; *; ; Onishi, Nobuaki; Takahashi, Hidetake; *; *; *; *; et al.
JAERI-M 90-079, 44 Pages, 1990/05
no abstracts in English
; Suzuki, Masatoshi; ; Harami, Taikan; Takahashi, Hidetake; Onishi, Nobuaki
Journal of Nuclear Science and Technology, 27(5), p.406 - 415, 1990/05
no abstracts in English
; Suzuki, Masatoshi; *; Takahashi, Hidetake;
Proceedings of 12th Linear Accelerator Meeting in Japan, p.113 - 116, 1987/00
no abstracts in English
; ; ;
JAERI-M 86-037, 21 Pages, 1986/03
no abstracts in English
; ; ; ; ; ; *; *
JAERI-M 86-028, 107 Pages, 1986/03
no abstracts in English
; ; *
JAERI-M 85-103, 66 Pages, 1985/08
no abstracts in English
; ; ; ; ; ; ; ; *
JAERI-M 85-003, 14 Pages, 1985/02
no abstracts in English
; Ikezoe, Yasumasa; Shimizu, Saburo; Nakajima, Hayato; ; ; ; ;
JAERI-M 82-081, 65 Pages, 1982/07
no abstracts in English
