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Behavior of Nb$$_{3}$$Sn cable assembled with conduit for ITER central solenoid

ITER中心ソレノイド用Nb$$_{3}$$Sn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 ($$N_{p}$$) of the TF cable increased linearly to 50 against the inserted cable length ($$l_{i}$$). At first, $$N_{p}$$ of the CS cable also increased linearly by $$l_{i}$$ of 150 m. However, the increasing rate declined and the $$N_{p}$$ became constant to 30 at 600 m. During the compaction, the number of the rotation at the tail ($$N_{t}$$) of the CS cable increased linearly to 69 against the compacted cable length ($$l_{c}$$). It is important to measure not only $$N_{p}$$ but also $$N_{t}$$ because the rotation affects the twist pitch of the cable ($$l_{p}$$). After manufacturing the CS conductor, an X-ray transmission imaging made clear the $$l_{p}$$ along the whole length of the conductor for the first time. The $$l_{p}$$ peaked at the point; thus, a conductor sample should be taken there to investigate the effect of the $$l_{p}$$ elongation on the conductor performance.

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パーセンタイル:85.66

分野:Engineering, Electrical & Electronic

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