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Yamanishi, Takeshi; Seshimo, Kazuyoshi; Kitami, Takayuki; Tan, Sakyo*
Nihon Ryokka Kogakkai-Shi, 32(1), p.191 - 194, 2006/08
no abstracts in English
Yamanishi, Takeshi; Seshimo, Kazuyoshi; Kitami, Takayuki; Naruse, Hideo; Tan, Sakyo*
Nihon Ryokka Kogakkai-Shi, 30(1), p.227 - 230, 2004/08
Large-scale pine woods is deforested before the High-Intensity Proton Accelerator facilities construction in the Japan Atomic Energy Research Institute Tokai Research Establishment. Spraying the black pine seeds by spraying as an trial method of planting for the restoration of this forest.
Matsuda, Norihiro; Nakashima, Hiroshi; Kasugai, Yoshimi; Sasamoto, Nobuo*; Kinno, Masaharu*; Kitami, Takayuki; Ichimura, Takahito; Hori, Junichi*; Ochiai, Kentaro; Nishitani, Takeo
Journal of Nuclear Science and Technology, 41(Suppl.4), p.74 - 77, 2004/03
In high power proton accelerator facilities, concrete shield can be highly activated, which makes maintenance work quite difficult. So, a low-activationized concrete (limestone concrete) is to be partially adopted as a concrete shield for Japan Proton Accelerator Research Complex (J-PARC) aiming at reducing -ray exposure dose during maintenance period. A new quantity, Na-equivalent, was introduced as a criterion to assure effectiveness of the low-activationized concrete. In order of its verification, powdered low-activationized concrete and ordinary one were irradiated using FNS at JAERI. The measurements were analyzed by a shielding design code system being used for J-PARC, showing that the calculations reproduce the measured induced activity within a factor of 2. Furthermore, by using the same code system, -ray exposure dose was calculated for the configuration of J-PARC to find out that -ray exposure dose by the low-activationized concrete was about 10 times lower than that by the ordinary concrete in a period of less than a few days after operation.
Nishimura, Hideo; Magara, Masaaki; Hanzawa, Yukiko; Esaka, Fumitaka; Takahashi, Tsukasa; Gunji, Katsubumi; Miyamoto, Yutaka; Yasuda, Kenichiro; Tsuruta, Yasuhiro; Tsuda, Shinji; et al.
Heisei 11-Nendo Hosho Sochi Semina Koenroku Tekisuto, p.95 - 107, 2000/01
no abstracts in English
Sumita, Junya; Sawa, Kazuhiro; Mogi, Haruyoshi; ; Kitami, Takayuki; Akutsu, Yoichi; *; *; *
JAERI-Research 99-054, p.41 - 0, 1999/09
no abstracts in English
Kubo, Takashi; Kitami, Takayuki; Itabashi, Hideharu; Horiguchi, Takashi; Ichimura, Takahito
no journal, ,
no abstracts in English
Horiguchi, Takashi; Kitami, Takayuki; Itabashi, Hideharu; Ichimura, Takahito; Kubo, Takashi
no journal, ,
no abstracts in English
Ichimura, Takahito; Kitami, Takayuki; Horiguchi, Takashi; Kawama, Itsuo*
no journal, ,
no abstracts in English
Kawama, Itsuo*; Ichimura, Takahito; Kitami, Takayuki; Horiguchi, Takashi; Aoki, Yusuke*
no journal, ,
no abstracts in English
Yoshimura, Aya*; Ichimura, Takahito; Kitami, Takayuki; Horiguchi, Takashi; Kawama, Itsuo*; Ouchi, Hajime*; Tsunokake, Hisao*
no journal, ,
no abstracts in English