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-ray irradiation experiments of collimator key components for the 3GeV-RCS of J-PARCKinsho, Michikazu; Ogiwara, Norio; Masukawa, Fumihiro; Takeda, Osamu; Yamamoto, Kazami; Kusano, Joichi
Proceedings of 2005 Particle Accelerator Conference (PAC '05) (CD-ROM), p.1309 - 1311, 2005/00
It was success to develop the radiation resistant components using for beam collimator. Turbo molecular pump could be operated more than 15 MGy of ray irradiation dose. Stepping motor developed at JAERI could be operated with good performance in the ray dose of more than 70 MGy. PEEK sheathed cables and connector have kept good performance during ray irradiation more than the dose of 10 MGy. It was cleared that the function of the heat pipe disappeared at 30 kGy ray irradiation dose.
Kinsho, Michikazu; Ogiwara, Norio; Wada, Kaoru*; Yoshida, Motoo*; Nakayasu, Tatsuo*; Yamato, Yukio*
Vacuum, 73(2), p.175 - 180, 2004/03
Times Cited Count：4 Percentile：20.5(Materials Science, Multidisciplinary)The turbo molecular pump which can be operated exposed to high radiation has been developing at JAERI and Osaka Vacuum Ltd., because it is planed to use this turbo molecular pump for the 3GeV-RCS of the J-PARC project. The goal of irradiation dose is 30 MGy because the cumulative energy dose due to radiation is approximately estimated to be on the order of 100 MGy for 30 years of the 3GeV-RCS operation. In order to know radiation damage of turbo molecular pump, gamma-ray irradiation experiment has been performed at JAERI. The turbo molecular pump could operate properly less than 3.5 MGy absorption dose under gamma-ray irradiation environment. Since the elongation of elastomer vacuum seals became small due to exposed to radiation, this radiation damage of elastomer seals causes leak. The turbo molecular pump components except the elasomer seals, for example motor coil, control sensor, and etc, have kept high performance more than 7 MGy absorption dose. The turbo molecular pump without elastomer seals has been developed and the irradiation test will be started form April.
Matsuda, Makoto; Fujii, Yoshio*; Tayama, Hidekazu; Ishizaki, Nobuhiro; Abe, Shinichi; Hanashima, Susumu; Tsukihashi, Yoshihiro; Horie, Katsuzo; Ouchi, Isao; Kanda, Susumu; et al.
JNC TN7200 2001-001, p.166 - 168, 2002/01
no abstracts in English
Takeuchi, Suehiro; Matsuda, Makoto; Yoshida, Tadashi
JAERI-Conf 2000-019, p.105 - 108, 2001/02
no abstracts in English
Nakamura, Hiroo
Purazuma, Kaku Yugo Gakkai-Shi, 69(5), p.403 - 414, 1993/05
no abstracts in English
Oga, Tokumichi; Arai, T.
Shinku, 21(8), p.255 - 262, 1978/08
no abstracts in English
神谷 潤一郎; 和田 薫
桜井 充*; ナン ティン ティン トゥエ*; 上原 孝浩*; 馬渕 拓也*
JP, 2022-142703 
Patent licensing information
【課題】高い真空排気性能を実現することができるターボ分子ポンプを提供する。 【解決手段】ターボ分子ポンプ1には、回転の軸線AXに沿って複数段のロータ翼31Aを有するロータ30と、軸線AXに沿って複数段のロータ翼31Aの間にそれぞれ配置される複数段のステータ翼14Aと、それらのロータ30、及び複数段のステータ翼14Aを内部に収容するケーシング11と、が設けられる。そして、それらの複数段のロータ翼31A、複数段のステータ翼14A、及びケーシング11を含むそのケーシング11の内部の少なくとも一部は、その素材に含まれるガスを放出させるための真空ベーキング処理が施された材料によって形成される。
