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Nakamoto, Tatsushi*; Idesaki, Akira; Morishita, Norio; Ito, Hisayoshi; Kamiya, Tomihiro; Kimura, Nobuhiro*; Makida, Yasuhiro*; Ogitsu, Toru*; Ohata, Hirokatsu*; Yamamoto, Akira*
AIP Conference Proceedings 824, p.225 - 232, 2006/03
Radiation resistance with respect to mechanical properties of organic materials used in the superconducting magnets for the 50 GeV - 750 kW proton beam line for the J-PARC neutrino experiment was studied. Specimens cooled at liquid nitrogen temperature of 77 K were irradiated by gamma rays beyond 10 MGy. The flexural strength of glass-fiber reinforced plastics (GFRPs), the tear strength of polyimide films and the tensile lap-shear strength of adhesive films were evaluated. It was verified that the organic materials used in the superconducting magnet have a sufficient radiation resistance, and the degradation of their mechanical properties after 10 years operation was estimated to be negligible.
Oshima, Akihiro; Udagawa, Akira; Morita, Yosuke
Radiation Physics and Chemistry, 60(1-2), p.95 - 100, 2001/01
Times Cited Count：8 Percentile：52.3(Chemistry, Physical)no abstracts in English
Oshima, Akihiro; Udagawa, Akira; Morita, Yosuke
Proceedings of International Symposium on Prospect for Application of Radiation towards the 21st Century, p.83 - 84, 2000/00
no abstracts in English
films on C- and A-cut sapphire substratesDai, Z.*; Naramoto, Hiroshi; Narumi, Kazumasa; Yamamoto, Shunya; Miyashita, Atsumi
Journal of Applied Physics, 85(10), p.7433 - 7437, 1999/05
Times Cited Count：22 Percentile：67.86(Physics, Applied)no abstracts in English
V ion implantation followed by thermal annealingNaramoto, Hiroshi; Aoki, Yasushi; Yamamoto, Shunya; Narumi, Kazumasa
Mater. Sci. Eng., A, 253(1-2), p.114 - 120, 1998/00
no abstracts in English
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Nihon Genshiryoku Gakkai-Shi, 27(8), p.722 - 724, 1985/00
Times Cited Count：0 Percentile：0.33(Nuclear Science & Technology)no abstracts in English
