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Kasugai, Yoshimi; Sato, Koichi; Takahashi, Kazutoshi*; Miyamoto, Yukihiro; Kai, Tetsuya; Harada, Masahide; Haga, Katsuhiro; Takada, Hiroshi
JPS Conference Proceedings (Internet), 33, p.011144_1 - 011144_6, 2021/03
A spallation neutron source with a mercury target has been in operation at the Materials and Life Science Experimental Facility of J-PARC since 2008. The target vessel made of stainless steel is required to be exchanged periodically due to radiation damage etc. In this presentation, tritium gas release observed in the first series of exchange work in 2011 and the analytical results will be shown.
Abe, Sadayoshi; Kuwae, Yoshiaki*; Sasaki, Satoru*; Takahashi, Kazutoshi*
Genshiryoku, hoshasen Bukaiho (Internet), (10), p.6 - 8, 2012/03
Between January 30, 2012 August 26, 2011, the support for the correct understanding of nuclear and radiation due to comments and advice to participate in disaster reconstruction committee formulated vision of the Tomioka town, as a professional Engineers, Japan was carried out, As a result, the vision I hope to go back to town Tomioka are taken together to form all townspeople have been developed.
Kasugai, Yoshimi; Kai, Tetsuya; Maekawa, Fujio; Nakashima, Hiroshi; Takada, Hiroshi; Konno, Chikara; Numajiri, Masaharu*; Ino, Takashi*; Takahashi, Kazutoshi*
JAERI-Research 2003-034, 115 Pages, 2004/01
JAERI-Research-2003-034.pdf:4.18MB
Measurement of radioactivity induced by high-energy protons with energy of 2.83 and 24 GeV and spallation neutrons produced by bombarding a mercury target with the high-energy protons were performed by using the AGS (Alternative Gradient Synchrotron) accelerator at Brookhaven National Laboratory. The samples of boron, carbon, aluminum, iron, copper, niobium, mercury-oxide, lead, bismuth, acrylic resin, SS-316, Inconel-625 and Inconel-718 were irradiated around the mercury target. After the irradiation, the radioactivity of each sample was measured by using HPGe detectors at the cooling time between 2 h and 200 d. In the processing of the measured 
-ray spectra, more than 90 radioactive nucleus were identified, and the radioactivity data were obtained. This report gives the experimental procedure, the data processing and the experimental results in detail.
Nakashima, Hiroshi; Takada, Hiroshi; Kasugai, Yoshimi; Meigo, Shinichiro; Maekawa, Fujio; Kai, Tetsuya; Konno, Chikara; Ikeda, Yujiro; Oyama, Yukio; Watanabe, Noboru; et al.
Proceedings of 6th Meeting of the Task Force on Shielding Aspects of Accelerators, Targets and Irradiation Facilities (SATIF-6), (OECD/NEA No.3828), p.27 - 36, 2004/00
no abstracts in English
Nakashima, Hiroshi; Takada, Hiroshi; Kasugai, Yoshimi; Meigo, Shinichiro; Maekawa, Fujio; Kai, Tetsuya; Konno, Chikara; Ikeda, Yujiro; Oyama, Yukio; Watanabe, Noboru; et al.
Journal of Nuclear Science and Technology, 39(Suppl.2), p.1155 - 1160, 2002/08
no abstracts in English
Endo, Akira; Sato, Tatsuhiko; Satoh, Daiki; Shikaze, Yoshiaki; Tanimura, Yoshihiko; Saegusa, Jun; Tsutsumi, Masahiro; Yamaguchi, Yasuhiro; Kaneko, Hirohisa; Oda, Keiji*; et al.
no journal, ,
no abstracts in English
Nakazawa, Takashi; Sato, Koichi; Miyamoto, Yukihiro; Nakashima, Hiroshi; Kasugai, Yoshimi; Kai, Tetsuya; Oi, Motoki; Miura, Taichi*; Takahashi, Kazutoshi*
no journal, ,
Radioactive nuclide activated in the mercury target of Materials and Life-Science Experimental Facility of J-PARC, the measurement results of the dose rate around the mercury target and the safety measures for radiation are reported.
Kasugai, Yoshimi; Sato, Koichi; Takahashi, Kazutoshi*; Miyamoto, Yukihiro; Kai, Tetsuya; Harada, Masahide; Haga, Katsuhiro; Takada, Hiroshi
no journal, ,
A spallation neutron source of mercury has been operated in the Materials and Life Science Experimental Facility of J-PARC. A stainless vessel containing mercury during the operation has been exchanged periodically. During the exchange work, tritium release has been observed. The behavior and an analysis from a viewpoint of tritium absorption and emission from stainless steel are reported.
