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Large superconductors and joints for fusion magnets: From conceptual design to testing at full scale

D. Ciazynski, J.L. Duchateau, P. Decool, P. Libeyre, B. Turck2001年被引用 17Nuclear FusionIF 3出版社

A new kind of superconductor, using the cable-in-conduit concept, is emerging, mainly in the context of fusion activity. At present no large Nb3Sn magnet in the world is operating using this concept. The difficulty of this technology, which has now been studied for 20 years, is that it requires major advances in several interconnected new fields, such as handling a large number (1000) of superconducting strands, high current conductors (50 kA), forced flow cryogenics, Nb3Sn technology, low loss conductors in pulsed operation, high current connections and high voltage insulation (10 kV), as well as demonstration of its economical and industrial feasibility. CEA has been very much involved, during the past ten years, in this development, which took place in the framework of the NET and ITER technological programmes. One major milestone was reached in 1998-1999 with the successful tests by Euratom-CEA of three full size conductor and connection samples in the SULTAN facility in Switzerland.

日本語訳

ケーブル・イン・コンジット概念を用いた新型超伝導磁石が、主に核融合の文脈で登場しつつある。現在、世界でこの概念を用いて運転中の大型Nb3Sn磁石は存在しない。この技術は20年にわたって研究されてきたが、その難しさは、多数(1000本)の超伝導ストランドの取り扱い、大電流(50 kA)導体、強制流動極低温、Nb3Sn技術、パルス運転における低損失導体、大電流接続、高電圧絶縁(10 kV)など、相互に関連する複数の新しい分野における大きな進歩を必要とすることにある。CEAは過去10年間、この開発に深く関与してきたが、これはNETおよびITER技術プログラムの枠組みの中で行われた。1998年から1999年にかけて、スイスのSULTAN施設において、Euratom-CEAによる3つのフルサイズ導体および接続サンプルの試験が成功し、主要なマイルストーンが達成された。

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