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Horiguchi, Hironori; Nakamura, Takemi; Kumada, Hiroaki*; Yanagie, Hironobu*; Suzuki, Minoru*; Sagawa, Hisashi
Proceedings of 14th International Congress on Neutron Capture Therapy (ICNCT-14) (CD-ROM), p.234 - 237, 2010/10
Recurrent breast cancer has been considered the application for boron neutron capture therapy using the JRR-4. The investigation of irradiation conditions for the recurrent breast cancer was performed by simulation with the JCDS. We performed the preliminary dosimetry of the model to verify the efficient irradiation conditions such as the neutron energy modes and multiple field technique. From the result, when the 30 Gy-Eq dose as minimum dose was delivered to the cancers, comparable dose distribution was delivered at the healthy tissues by both a one-port irradiation from anterior direction and a two-port irradiation from tangential direction. We revealed that the two-port irradiation was not valid to reduce the healthy tissues dose due to the isotopic scattering of neutrons in the body. We concluded that the optimal irradiation condition was the one-port irradiation with thermal neutron beam mode in terms of less healthy tissues dose and shorter irradiation time.
Komeda, Masao; Arai, Masaji; Sagawa, Hisashi; Kusunoki, Tsuyoshi
Proceedings of 12th International Group on Research Reactors (12th IGORR) (USB Flash Drive), 9 Pages, 2009/10
Komeda, Masao; Yamamoto, Kazuyoshi; Yagi, Masahiro; Sagawa, Hisashi
JAEA-Technology 2008-064, 77 Pages, 2008/10
JAEA-Technology-2008-064.pdf:6.7MB
We investigated the irradiation method to irradiate 12 inch NTD silicon uniformly in JRR-3, where 6 inch NTD silicon is being irradiated at present, by using MVP of the Monte Carlo calculation code. In the case of irradiating 12 inch NTD silicon, the deviation of the doping distribution in the radial direction becomes 1.17 by the same irradiation method of 6 inch NTD silicon. Therefore the thermal neutron filter was introduced for uniform doping (the deviation is less than 1.10) in the radial direction and the effect was analyzed. As the result, it was indicated that the deviation of the doping distribution in the radial direction became less than 1.1 by using the neutron filter, which was made from aluminum alloy of 2 mm thickness including natural boron of 1%.
Sagawa, Hisashi; Koda, Nobuyuki; Hanawa, Nobuhiro; Maruo, Takeshi; Miyazawa, Masataka; Unesaki, Hironobu*; Nakagome, Yoshihiro*
IAEA-TECDOC-1593, p.121 - 128, 2008/06
In Japan, 1,712 of Research Reactor Spent Nuclear fuels (RRSNFs) have been transported to the US successfully since the receipt in accordance with the foreign research reactor spent nuclear fuel acceptance policy started in 1996. Especially, Japan Atomic Energy Agency (JAEA) carried out shipment to the US of eight times and of 1,283 fuel elements in total. This paper describes experiences of RRSNF transportation to the US in Japan.
Nakagome, Yoshihiro*; Unesaki, Hironobu*; Sagawa, Hisashi
Proceedings of 27th International Meeting on Reduced Enrichment for Research and Test Reactors 2005 (RERTR 2005) (Internet), 10 Pages, 2006/00
no abstracts in English
Kinase, Masami; Sagawa, Hisashi; Nakagome, Yoshihiro*; Unesaki, Hironobu*
Proceedings of International Meeting on Reduced Enrichment for Research and Test Reactors 2006 (RERTR 2006) (Internet), 10 Pages, 2006/00
The reduced enrichment programs for the JRR-3M, JRR-4 and JMTR of Japan Atomic Energy Research Institute (JAERI) has been completed until 1999. The KUR of Kyoto University Research Reactor Institute (KURRI) has been partially completed and is still in progress under the Joint Study Program with Argonne National Laboratory (ANL). The JRR-3M using LEU silicide fuel elements has done a functional test by the Japanese Government in 2000, and the property of the reactor core was satisfied. JAERI established a "U-Mo fuel ad hoc committee" for feasibility study concerning future LEU fuel instead of the silicide fuel in 2001, and an installation of the U-Mo fuel was estimated from 2012, even the irradiation tests are carried out successfully. The U.S. Policy of Foreign Research Reactor Spent Nuclear Fuels is strongly expected to expand the policy until U-Mo fuel installed. The Japanese Government approved a cancellation of the KUHFR Project in February 1991, and in April 1994 the U.S. Government gave an approval to utilize HEU fuel in the KUR instead of the KUHFR. Therefore, the KUR will be operated with HEU fuel until March 2006, then the full core conversion with LEU fuel will be done. All KUR spent fuel elements will be sent to the U.S. by March 2008.
Tsuchiya, Kunihiko; Kawamura, Hiroshi; Nakamichi, Masaru*; Sagawa, Hisashi
JAERI-Tech 2005-013, 56 Pages, 2005/03
no abstracts in English
Nishitani, Takeo; Shikama, Tatsuo*; Fukao, M.*; Matsuo, H.*; Snider, R.*; Broesch, J.*; Sagawa, Hisashi; Kawamura, Hiroshi; Kasai, Satoshi
Fusion Engineering and Design, 51-52(Part.B), p.153 - 158, 2000/11
Times Cited Count：10 Percentile：54.14(Nuclear Science & Technology)no abstracts in English
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pebblesTsuchiya, Kunihiko; Nakamichi, Masaru; Nagao, Yoshiharu; Fujita, J.*; Sagawa, Hisashi; Tanaka, Satoru*; Kawamura, Hiroshi
Fusion Engineering and Design, 51-52, p.887 - 892, 2000/11
Times Cited Count：16 Percentile：70.39(Nuclear Science & Technology)no abstracts in English
Ishitsuka, Etsuo; Sagawa, Hisashi; Nagashima, Akira; Sugie, Tatsuo; Nishitani, Takeo; Yamamoto, Shin; Kawamura, Hiroshi
Effects of Radiation on Materials (ASTM STP 1366), p.1176 - 1185, 2000/00
no abstracts in English
Kanno, Masaru; ; ; Sagawa, Hisashi;
JAERI-Conf 99-006, p.264 - 269, 1999/08
no abstracts in English
Nishitani, Takeo; *; Ikeda, Yujiro; Ishitsuka, Etsuo; Kakuta, Tsunemi; Kasai, Satoshi; Kawamura, Hiroshi; Morita, Yosuke; Nagashima, Akira; Nakamichi, Masaru; et al.
JAERI-Research 98-053, 105 Pages, 1998/10
JAERI-Research-98-053.pdf:4.78MB
no abstracts in English
Nishitani, Takeo; Ishitsuka, Etsuo; Kakuta, Tsunemi; Sagawa, Hisashi; Oyama, Yukio; *; Sugie, Tatsuo; Noda, Kenji; Kawamura, Hiroshi; Kasai, Satoshi
Fusion Engineering and Design, 42, p.443 - 448, 1998/00
Times Cited Count：22 Percentile：83.22(Nuclear Science & Technology)no abstracts in English
Kawamura, Hiroshi; Tsuchiya, Kunihiko; Nakamichi, Masaru; Fujita, J.*; Sagawa, Hisashi; Nagao, Yoshiharu; Y.Gohar*; ; Saito, Takashi; ; et al.
Fusion Technology 1998, 2, p.1289 - 1292, 1998/00
no abstracts in English
Nakamichi, Masaru; *; Kawamura, Hiroshi; Sagawa, Hisashi; Nakazawa, Masaharu*
Fusion Technology 1996, 0, p.1591 - 1594, 1997/00
no abstracts in English
Nakamichi, Masaru; Sagawa, Hisashi; Yamaguchi, Katsuyoshi*; *; Kawamura, Hiroshi
Fusion Technology 1996, 0, p.1351 - 1354, 1997/00
no abstracts in English
Nishitani, Takeo; *; Ikeda, Yujiro; Ishitsuka, Etsuo; Kakuta, Tsunemi; Kasai, Satoshi; Kawamura, Hiroshi; Maekawa, Fujio; Morita, Yosuke; Nagashima, Akira; et al.
JAERI-Tech 96-040, 22 Pages, 1996/10
no abstracts in English
Kawamura, Hiroshi; Sagawa, Hisashi; Ishitsuka, Etsuo; Tsuchiya, Kunihiko; Nakamichi, Masaru
Proc. of Int. Tritium Workshop on Present Status and Prospect of Tritium-Material Interaction Studies, 0(0), p.47 - 52, 1996/07
no abstracts in English
Kawamura, Hiroshi; Sagawa, Hisashi; Ishitsuka, Etsuo; Tsuchiya, Kunihiko; Nakamichi, Masaru; Saito, Shigeru
Proc. of 5th Int. Workshop on Ceramic Breeder Blanket Interaction, 0, p.87 - 96, 1996/00
no abstracts in English
Ishitsuka, Etsuo; Nakamichi, Masaru; Kawamura, Hiroshi; Sagawa, Hisashi; *; *; Saito, Minoru
Journal of Nuclear Materials, 212-215, p.881 - 884, 1994/00
Times Cited Count：2 Percentile：28.09(Materials Science, Multidisciplinary)no abstracts in English
