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Chida, Yutaka; Iguchi, Masahide; Nakajima, Hideo
no journal, ,
no abstracts in English
Iguchi, Masahide; Saito, Toru; Kawano, Katsumi; Tsutsumi, Fumiaki; Takano, Katsutoshi; Nakajima, Hideo; Chida, Yutaka
no journal, ,
no abstracts in English
Saito, Toru; Kawano, Katsumi; Hamada, Kazuya; Iguchi, Masahide; Tsutsumi, Fumiaki; Takano, Katsutoshi; Nakajima, Hideo
no journal, ,
no abstracts in English
Hamada, Kazuya; Nunoya, Yoshihiko; Isono, Takaaki; Takahashi, Yoshikazu; Hemmi, Tsutomu; Matsui, Kunihiro; Nabara, Yoshihiro; Kawano, Katsumi; Oshikiri, Masayuki; Tsutsumi, Fumiaki; et al.
no journal, ,
ITER Central Solenoid (CS) coil conductor is composed of 576 Nb
Sn superconducting strand and 288 Cu strand protected by a circle-in-square shaped sheath tube (conduit) with an outer dimension of 49 mm and inner hoe diameter of 32.6 mm. The conduit materila is high manganese stainless steel (JK2LB) with a low thermal contract charactarisitic and low fatigue crack grwoth rate, developed by JAEA. The Japan Atomic Energy Agency (JAEA) as the Japanese Domestic Agency (JADA) of the ITER project has the responsibility to procure 100% of the ITER CS Coil conductors. Manufactured conductors will be transported to US, formed to CS coil shape and installed in ITER. Prior to conductor procurement, JAEA manufactured 4-m long conductor sample. The sample will be tested in SULTAN facility in Switzerland. In the conferece, results of SULTAN test and charactarisitic of conduit materila are reported. And status of CS condcutor procurement will be introduced.
Takano, Katsutoshi; Koizumi, Norikiyo; Matsui, Kunihiro; Hemmi, Tsutomu; Nakajima, Hideo
no journal, ,
no abstracts in English
Sn superconducting strand for ITER TF coilNabara, Yoshihiro; Nunoya, Yoshihiko; Isono, Takaaki; Koizumi, Norikiyo; Hamada, Kazuya; Matsui, Kunihiro; Hemmi, Tsutomu; Yoshikawa, Masatoshi*; Uno, Yasuhiro; Oshikiri, Masayuki; et al.
no journal, ,
no abstracts in English
Koizumi, Norikiyo; Takahashi, Yoshikazu; Nunoya, Yoshihiko; Hamada, Kazuya; Isono, Takaaki; Nabara, Yoshihiro; Matsui, Kunihiro; Hemmi, Tsutomu; Chida, Yutaka; Iguchi, Masahide; et al.
no journal, ,
no abstracts in English
Sn strandKoizumi, Norikiyo; Murakami, Haruyuki; Hemmi, Tsutomu; Nakajima, Hideo
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no abstracts in English
Hemmi, Tsutomu; Matsui, Kunihiro; Koizumi, Norikiyo; Takano, Katsutoshi; Nakajima, Hideo
no journal, ,
Insulations for the ITER TF coils are required withstanding against a designed neutron fluence of 10
n/m
. As a candidate for resin, Cyanate Ester (CE) and epoxy blended resin, which has sufficiently high radiation hardness, will be applied for the TF coils instead of epoxy resins. JAEA is performing the some trials for the insulation and impregnation using the CE blended resin to optimize the insulation work. In this report, impregnation trials simulating the simultaneous impregnation of the conductor insulation and the Double Pancake (DP) insulation and fabrication of the bonded Glass and Polyimide tape are reported.
Matsui, Kunihiro; Koizumi, Norikiyo; Hemmi, Tsutomu; Takano, Katsutoshi; Iguchi, Masahide; Nakajima, Hideo
no journal, ,
no abstracts in English
Kamiya, Koji; Komeda, Masao*; Kizu, Kaname; Yoshida, Kiyoshi
no journal, ,
JT-60SA helium refrigerator system cools the superconducting coils, high temperature superconducting current leads, the thermal shield, and cryopump. In addition to the heat load from those components, the circulation pump power to cool the superconducting coils with the supercritical helium is added. Therefore, evaluation of the power defined as the mass flow rate times the pressure drop for circulation pump is very important. JT-60SA is equipped with two circulation pumps refered as CP. CP1 cools the toroidal field (TF) coils and structures which EU is in charge of manufacture, and CP2 cools the central solenoids and the equilibrium field (EF) coils which Japan is in charge of manufacture. The required pressure drop of CP1 and CP2 are 120 kPa and 100 kPa, respectively. The current presentation reports optimization of the mass flow rate for CP2, and its resultant pressure drop calculation satisfies the required pressure drops.
Yoshida, Kiyoshi; Tsuchiya, Katsuhiko; Kizu, Kaname; Murakami, Haruyuki; Kamiya, Koji
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no abstracts in English
Onishi, Yoshihiro; Asakawa, Shuji; Ichige, Toshikatsu; Hoshi, Ryo; Kamiya, Koji; Yoshida, Kiyoshi
no journal, ,
no abstracts in English
Murakami, Haruyuki; Kizu, Kaname; Tsuchiya, Katsuhiko; Yoshida, Kiyoshi; Obana, Tetsuhiro*; Takahata, Kazuya*; Hamaguchi, Shinji*; Yanagi, Nagato*; Imagawa, Shinsaku*; Mito, Toshiyuki*; et al.
no journal, ,
no abstracts in English
Tatsumoto, Hideki; Aso, Tomokazu; Kato, Takashi; Otsu, Kiichi
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no abstracts in English
Tatsumoto, Hideki; Shiotsu, Masahiro*; Kobayashi, Hiroto*; Yoshikawa, Kotaro*; Shirai, Yasuyuki*; Hata, Koichi*; Kobayashi, Hiroaki*; Naruo, Yoshihiro*; Inatani, Yoshifumi*
no journal, ,
no abstracts in English