Upgrading the NIFS superconductor test facility for JT-60SA cable-in-conduit conductors |
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| Authors: | Tetsuhiro Obana Kazuya Takahata Shinji Hamaguchi Nagato Yanagi Toshiyuki Mito Shinsaku Imagawa Kaname Kizu Katsuhiko Tsuchiya Ryo Hoshi Kiyoshi Yoshida |
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| Affiliation: | aNational Institute for Fusion Science, Toki, Japan;bJapan Atomic Energy Agency, Naka, Japan |
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| Abstract: | The superconductor test facility at the National Institute for Fusion Science (NIFS) was upgraded to test cable-in-conduit (CIC) conductors for the JT-60SA equilibrium field (EF) coil. Supercritical helium (SHe) lines were assembled with transfer tubes and a heat exchanger. The CIC conductor was covered with a thermal insulation vessel, filled with gas helium at atmospheric pressure. The temperature of the conductor was varied using a film heater attached to an inlet pipe. Critical current (Ic) and current sharing temperature (Tcs) measurements of the prototype CIC conductor were carried out successfully in the upgraded test facility. During the measurements, the conductor temperature was precisely controlled. |
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| Keywords: | Superconductor test facility JT-60SA Cable-in-conduit conductor Supercritical helium |
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