Behavior of NbSn cable assembled with conduit for ITER central solenoid

ITER中心ソレノイド用NbSn撚線のコンジットとの一体化における挙動

名原 啓博; 諏訪 友音; 高橋 良和; 辺見 努; 梶谷 秀樹; 尾関 秀将; 櫻井 武尊; 井口 将秀; 布谷 嘉彦; 礒野 高明; 松井 邦浩; 小泉 徳潔; 堤 史明; 宇野 康弘; 押切 雅幸; 渋谷 和幸*; 奥野 清; 村上 幸伸*; 高野 剛志*; 関口 信雄*; 松田 英光*

Nabara, Yoshihiro; Suwa, Tomone; Takahashi, Yoshikazu; Hemmi, Tsutomu; Kajitani, Hideki; Ozeki, Hidemasa; Sakurai, Takeru; Iguchi, Masahide; Nunoya, Yoshihiko; Isono, Takaaki; Matsui, Kunihiro; Koizumi, Norikiyo; Tsutsumi, Fumiaki; Uno, Yasuhiro; Oshikiri, Masayuki; Shibutani, Kazuyuki*; Okuno, Kiyoshi; Murakami, Yukinobu*; Takano, Tsuyoshi*; Sekiguchi, Nobuo*; Matsuda, Hidemitsu*

JAEA procures all superconductors for central solenoid (CS) in the ITER project. The cable is inserted into a conduit and compacted with it. During the insertion, the number of the rotation at the point () of the TF cable increased linearly to 50 against the inserted cable length (). At first, of the CS cable also increased linearly by of 150 m. However, the increasing rate declined and the became constant to 30 at 600 m. During the compaction, the number of the rotation at the tail () of the CS cable increased linearly to 69 against the compacted cable length (). It is important to measure not only but also because the rotation affects the twist pitch of the cable (). After manufacturing the CS conductor, an X-ray transmission imaging made clear the along the whole length of the conductor for the first time. The peaked at the point; thus, a conductor sample should be taken there to investigate the effect of the elongation on the conductor performance.