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Helical and poloidal coil R&D in LHD

J Yamamoto, T Mito, K Takahata, N Yanagi, O Motojima1998年Fusion Engineering and DesignIF 1.7出版社

AbstractThe development of superconducting coil system for the Large Helical Device (LHD) is summarized. The LHD is a fully superconducting heliotron type fusion experimental device under construction at the National Institute for Fusion Science (NIFS). The superconducting coils for the LHD consist of two helical coils and three pairs of poloidal coils. Their magnetic stored energy is 1.6 GJ and the LHD is one of the largest superconducting systems in the world. To construct such a large scale superconducting coil system, we have not only to accumulate existing technologies but we also have to develop new technologies. The items of research and development for the superconducting coil system of LHD, including the development of superconducting conductors and coils for the helical and the poloidal coils, cooling and excitation tests on a single inner vertical coil for the LHD, are reviewed.

日本語訳

大型ヘリカル装置(LHD)用超伝導コイルシステムの開発について概説する。LHDは、核融合科学研究所(NIFS)で建設中の完全超伝導ヘリオトロン型核融合実験装置である。LHDの超伝導コイルは、2本のヘリカルコイルと3対のポロイダルコイルで構成される。これらの磁気蓄積エネルギーは1.6 GJであり、LHDは世界最大級の超伝導システムの一つである。このような大規模超伝導コイルシステムを建設するには、既存技術の集積だけでなく、新技術の開発も必要である。本稿では、LHD用超伝導コイルシステムの研究開発項目として、ヘリカルコイルおよびポロイダルコイル用超伝導導体の開発、LHD用単一内側ポロイダルコイルの冷却試験および励磁試験についてレビューする。

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