Electromagnetic Phenomenon in Superconducting Magnet for Fusion Facility. Forced Flow Superconducting Magnet.

  • HAMADA Kazuya
    Naka Fusion Research Establishment, Japan Atomic Energy Research Institute
  • KOIZUMI Norikiyo
    Naka Fusion Research Establishment, Japan Atomic Energy Research Institute

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  • 核融合装置用超伝導コイルの電磁現象  強制冷却型超伝導コイル
  • 解説 核融合装置用超伝導コイルの電磁現象(1)強制冷却型超伝導コイル
  • カイセツ カク ユウゴウ ソウチヨウ チョウデンドウ コイル ノ デンジ ゲンショウ 1 キョウセイ レイキャクガタ チョウデンドウ コイル

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In the design of the International Thermonuclear Experimental Reactor (ITER), a forced flow cooled, Cable-In-Conduit Conductor (CICC) is selected for its magnet system because of its superior performance in withstanding voltage (>10kV) and, more importantly, its mechanical stiffness against large electromagnetic forces. The CICC consists of about 1,000 superconducting strands enclosed in a steel jacket, and due to this configuration, the CICC exhibits a characteristic electromagnetic phenomena which can be a cause of the instability of a conductor. Extensive studies were performed, especially on ac losses, stability, and current imbalance among the strands in order to understand the phenomena and to provide a design basis for CICC to be used in large superconducting magnets. This paper describes the work on developing the CICC including analytic studies regarding the realization of fusion magnets.


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