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Operating space of the Dynamic Ergodic Divertor for TEXTOR-94

K.H. Finken, S.S. Abdullaev, A. Kaleck, G.H. Wolf1999年被引用 60Nuclear FusionIF 3出版社

The Dynamic Ergodic Divertor (DED) is under construction as a novel tool for TEXTOR-94 to control transport at the plasma edge and possiblyalso plasma rotation. The DED has been laid out for the plasma reference conditions rres(q = 3) and βpol = 1. The operational space of DED is analysed here. It has been shown that a sufficient edge ergodization can be reached for all relevant βpol values (0 ⩽ βpol ⩽ 2). By shifting the resonance layer close tothe edge, the degree of ergodization can be substantially increased (by abouta factor of 4). The power supplies allow a superposition of the base n = 4mode with the n = 2 mode at arbitrary amplitude ratios, providing a partialdecoupling of the perturbation amplitude and its penetration; by an admixtureof 20% of the n = 2 mode, the diffusion coefficient for the magnetic fieldlines is significantly increased. Analyses of the operational space arecarried out by using both novel asymptotic and mapping methods.

日本語訳

ダイナミック・エルゴディック・ダイバータ(DED)は、プラズマ端部における輸送、そしておそらくはプラズマ回転をも制御するための新規ツールとして、TEXTOR-94用に建設中である。DEDは、プラズマ基準条件rres(q = 3)およびβpol = 1に対して設計されている。ここではDEDの動作空間を解析する。十分な端部エルゴダイゼーションは、すべての関連するβpol値(0 ⩽ βpol ⩽ 2)に対して達成可能であることが示されている。共鳴層を端部近傍に移動させることにより、エルゴダイゼーションの程度を大幅に(約4倍に)増加させることができる。電源は、基本n = 4モードとn = 2モードを任意の振幅比で重ね合わせることを可能にし、摂動振幅とその浸透の部分的な分離を提供する;n = 2モードを20%混合することにより、磁力線の拡散係数は有意に増加する。動作空間の解析は、新規の漸近法とマッピング法の両方を用いて行われる。

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textor高精度(タイトル一致)

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DivertorTEXTORErgodic divertor
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