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Local island divertor for the new edge control scenario

A. Komori, N. Ohyabu, A.C. England, D.E. Greenwood, A. Iiyoshi1998年Fusion Engineering and DesignIF 1.7出版社

AbstractThe new edge control scenario for the large helical device (LHD) with a local island divertor (LID) has been proposed, and technical and design studies of the LID have been done in detail. Although the LHD edge plasma control will primarily be done with a closed full helical divertor that utilizes a natural separatrix in the edge region, the LID that utilizes an m/n=1/1 island will be used in the early stage of the LHD experiment, prior to installing the closed full helical divertor. The advantage of the LID over the closed full helical divertor is the technical ease of hydrogen pumping because of the toroidally localized hydrogen recycling. This localized recycling, however, leads to high heat and particle fluxes onto divertor plates of an LID divertor head, and an average heat flux of 5 MW m−2 has been designed for 3 MW steady state discharges. This paper will summarize the new edge control scenario proved experimentally, as well as the technical and design studies of the LID for LHD.

日本語訳

大型ヘリカル装置(LHD)における局所アイランドダイバータ(LID)を用いた新しい周辺プラズマ制御シナリオが提案され、LIDの物理設計および工学的設計に関する詳細な検討が行われてきた。LHDの周辺プラズマ制御は、主として周辺領域の自然セパラトリックスを利用する閉鎖型完全ヘリカルダイバータによって行われる予定であるが、実験の初期段階においては、m/n=1/1のアイランドを利用するLIDが、閉鎖型完全ヘリカルダイバータの設置に先立って用いられることになる。LIDの利点は、トロイダル方向に局在化した水素リサイクリングにより、水素排気が工学的に容易であることである。しかしながら、この局在化した

装置

lhd中精度(概要文一致)

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DivertorIsland divertor
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