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Hemmi, Tsutomu; Nishimura, Arata*; Matsui, Kunihiro; Koizumi, Norikiyo; Nishijima, Shigehiro*; Shikama, Tatsuo*
AIP Conference Proceedings 1574, p.154 - 161, 2014/01
Times Cited Count：7 Percentile：93.29(Thermodynamics)Japan Atomic Energy Agency (JAEA), as Japan Domestic Agency, has responsibility to procure 9 ITER Toroidal Field (TF) coils. The insulation system of the ITER TF coils consists of 3 layers of insulations, which are a conductor insulation, a double-pancake (DP) insulation and a ground insulation, composed of multi-layer glass/polyimide tapes impregnated a resin. The ITER TF coils are required to withstand an irradiation of 10 MGy from 
-ray and neutrons since the ITER TF coils is exposed by first neutron (
0.1 MeV) of 10
n/m
during the operation of 20 years in the ITER. Cyanate-ester/epoxy blended resins and bonded glass/polyimide tapes are developed as insulation materials to realize the required radiation-hardness for the insulation of the ITER TF coils. To evaluate the radiation-hardness of the developed insulation materials, the inter-laminar shear strength of glass-fiber reinforced plastics (GFRP) fabricated using developed insulation materials is measured as one of most important mechanical properties before/after the irradiation in a fission reactor of JRR-3. As a result, it is demonstrated that the GFRPs using the developed insulation materials have a sufficient performance to apply the ITER TF coil insulation.
Nishimura, Arata*; Izumi, Yoshinobu*; Nishijima, Shigehiro*; Hemmi, Tsutomu; Koizumi, Norikiyo; Takeuchi, Takao*; Shikama, Tatsuo*
AIP Conference Proceedings 1219, p.127 - 134, 2010/04
Times Cited Count：1 Percentile：49.44(Materials Science, Multidisciplinary)A GFRP with cyanate ester resin was fabricated and neutron irradiation tests up to 1
10 n/m of fast neutron with over 0.1 MeV energy were carried out in fission reactor. The fabrication process of cyanate ester GFRP was established and a collaboration network to perform investigations on irradiation effect of superconducting magnet materials was constructed. Three kinds of samples were fabricated. The first was CTD403 GFRP made by NIFS, the second was (cyanate ester + epoxy) GFRP provided by Toshiba, and the last was CTD403 GFRP made by Toshiba. The irradiation was carried out at JRR-3 in Japan Atomic Energy Agency using Rabbit capsules. After the irradiation, short beam tests were conducted at room temperature and 77 K and interlaminar shear strength (ILSS) was evaluated. The irradiation of 110
n/m increased ILSS a little but 110 n/m irradiation decreased ILSS to around 50 MPa. These tendencies were observed in all three kinds of GFRPs.
Konoshima, Shigeru; Leonard, A. W.*; Ishijima, Tatsuo*; Shimizu, Katsuhiro; Kamata, Isao*; Meyer, W. H.*; Sakurai, Shinji; Kubo, Hirotaka; Hosogane, Nobuyuki; Tamai, Hiroshi
Plasma Physics and Controlled Fusion, 43(7), p.959 - 983, 2001/07
Times Cited Count：30 Percentile：66.19(Physics, Fluids & Plasmas)no abstracts in English
Sakurai, Shinji; Kubo, Hirotaka; Takenaga, Hidenobu; Asakura, Nobuyuki; Tamai, Hiroshi; Ishijima, Tatsuo*; Konoshima, Shigeru; Itami, Kiyoshi; Sakasai, Akira; Higashijima, Satoru; et al.
Journal of Nuclear Materials, 290-293, p.1002 - 1008, 2001/03
Times Cited Count：15 Percentile：70.58(Materials Science, Multidisciplinary)no abstracts in English
Kubo, Hirotaka; Sakurai, Shinji; Asakura, Nobuyuki; Konoshima, Shigeru; Tamai, Hiroshi; Higashijima, Satoru; Sakasai, Akira; Takenaga, Hidenobu; Itami, Kiyoshi; Shimizu, Katsuhiro; et al.
Nuclear Fusion, 41(2), p.227 - 233, 2001/02
Times Cited Count：53 Percentile：80.76(Physics, Fluids & Plasmas)no abstracts in English
Ishijima, Tatsuo
JAERI-Research 2000-015, p.94 - 0, 2000/03
JAERI-Research-2000-015.pdf:3.4MB
no abstracts in English
Ishijima, Tatsuo*; Kubo, Hirotaka; Shimada, Michiya; Konoshima, Shigeru; Higashijima, Satoru; Hosogane, Nobuyuki; Sakasai, Akira; Itami, Kiyoshi; Sugie, Tatsuo; JT-60 Team
Plasma Physics and Controlled Fusion, 41(9), p.1155 - 1166, 1999/09
Times Cited Count：14 Percentile：43.90(Physics, Fluids & Plasmas)no abstracts in English
Asakura, Nobuyuki; Hosogane, Nobuyuki; Itami, Kiyoshi; Sakasai, Akira; Sakurai, Shinji; Shimada, Michiya; Kubo, Hirotaka; Higashijima, Satoru; Shimizu, Katsuhiro; Takenaga, Hidenobu; et al.
Journal of Nuclear Materials, 266-269, p.182 - 188, 1999/00
Times Cited Count：68 Percentile：96.74(Materials Science, Multidisciplinary)no abstracts in English
Higashijima, Satoru; Kubo, Hirotaka; Sugie, Tatsuo; Shimizu, Katsuhiro; Sakasai, Akira; Asakura, Nobuyuki; Sakurai, Shinji; Hosogane, Nobuyuki; Konoshima, Shigeru; Tamai, Hiroshi; et al.
Journal of Nuclear Materials, 266-269, p.1078 - 1083, 1999/00
Times Cited Count：7 Percentile：49.21(Materials Science, Multidisciplinary)no abstracts in English
Hosogane, Nobuyuki; Tamai, Hiroshi; Higashijima, Satoru; Kubo, Hirotaka; Sakasai, Akira; Takenaga, Hidenobu; Itami, Kiyoshi; Sakurai, Shinji; Asakura, Nobuyuki; Konoshima, Shigeru; et al.
Journal of Nuclear Materials, 266-269, p.296 - 301, 1999/00
Times Cited Count：14 Percentile：70.09(Materials Science, Multidisciplinary)no abstracts in English
Kubo, Hirotaka; Higashijima, Satoru; Takenaga, Hidenobu; Shimizu, Katsuhiro; Kumagai, Akira*; Ishijima, Tatsuo*; Suzuki, Shingo*; Itami, Kiyoshi; Sugie, Tatsuo; Sakasai, Akira; et al.
Proc. of 1998 ICPP & 25th EPS Conf. on Contr. Fusion and Plasma Physics, 22C, p.427 - 430, 1998/00
no abstracts in English
Hosogane, Nobuyuki; Kubo, Hirotaka; Higashijima, Satoru; Itami, Kiyoshi; Shimizu, Katsuhiro; Takenaga, Hidenobu; Tamai, Hiroshi; Konoshima, Shigeru; Asakura, Nobuyuki; Sakurai, Shinji; et al.
Proceedings of 17th IAEA Fusion Energy Conference (CD-ROM), 4 Pages, 1998/00
no abstracts in English
Nishimura, Arata*; Takeuchi, Takao*; Nishijima, Shigehiro*; Ochiai, Kentaro; Takakura, Kosuke; Shikama, Tatsuo*; Sato, Isamu*; Watanabe, Kazuo*; Nishijima, Gen*
no journal, ,
no abstracts in English
