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Electron cyclotron resonance heating and EC-current drive experiments at W7-AS, status at W7-X

V Erckmann, H.P Laqua, H Maassberg, J Geiger, M Thumm2001年Fusion Engineering and DesignIF 1.7出版社

AbstractElectron Cyclotron Resonance Heating (ECRH) is the main heating method for both the W7-AS stellarator, which is operational, and W7-X, which is under construction. An overview on physics studies on ECRH and EC-current drive (ECCD) in an extended parameter range at W7-AS is presented. Current drive was investigated with an ECRH power of up to 1.3 MW at 140 GHz in a wide range of plasma density and launch angle. The experimental results are compared to predictions from quasilinear theory. Electron temperatures of up to 5.7 keV were measured at low to intermediate densities, which can only be explained by the beneficial effect of positive radial electric fields (‘electron root feature’). The results from W7-AS establish the experimental and technological basis for W7-X, which aims at demonstrating the inherent steady state capabality of stellarators at reactor relevant plasma parameters. The status of the design and construction of the ECRH system for W7-X is presented.

日本語訳

電子サイクロトロン共鳴加熱(ECRH)は、運転中のW7-ASステラレータと建設中のW7-Xの両方における主要な加熱方式である。拡張されたパラメータ範囲におけるECRHおよび電子サイクロトロン電流駆動(ECCD)に関する物理研究の概要をW7-ASについて示す。電流駆動は、140 GHzにおいて最大1.3 MWのECRHパワーで、広範囲のプラズマ密度および入射角にわたって調査された。実験結果は、準線形理論からの予測と比較される。電子温度は、低密度から中密度域において最大5.7 keVまで測定され、これは正の動径電場(「電子ルート特徴」)の有益な効果によってのみ説明可能である。W7-ASの結果は、ステラレータの固有の定常状態能力を炉心プラズマパラメータで実証することを目指すW7-Xのための実験的および技術的基盤を確立する。W7-X用ECRHシステムの設計および建設の現状を示す。

装置

wendelstein-7x高精度(タイトル一致)

wiki

Current driveElectron cyclotron heatingCyclotron resonanceW7-XElectron cyclotron resonanceW7-AS
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