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Progress in plasma-wall-interaction research - contributions from TEXTOR-94

U Samm, the TEXTOR-94 Team1999年Plasma Physics and Controlled FusionIF 2.2出版社

This paper gives an overview on the specific contributions from the tokamak TEXTOR/TEXTOR-94 to plasma-wall-interaction research, putting emphasis on the erosion and deposition properties (in particular graphite), hydrogen recycling mechanisms (molecules and atoms) and the characteristics of impurity radiation. The improved knowledge about these processes helps one to understand the mechanisms underlying these techniques, which have been pioneered on TEXTOR-94 for actively influencing plasma-wall interaction: impurity control by thin coatings, power exhaust on large areas with radiation from seeded impurities and the extension of the density limit by the control of radiative instabilities (MARFE). Also, the novel concept of the Dynamic Ergodic Divertor is presented as an innovative tool for controlling plasma-wall interaction.

日本語訳

本論文は、プラズマ-壁相互作用研究に対するトカマクTEXTOR/TEXTOR-94の具体的な貢献について概説し、特に侵食・堆積特性(特にグラファイト)、水素リサイクリング機構(分子・原子)、および不純物放射の特性に焦点を当てる。これらのプロセスに関する理解の向上は、TEXTOR-94において先駆的に開発された、プラズマ-壁相互作用を能動的に制御するための以下の手法の基礎となる機構の解明に寄与する:薄膜コーティングによる不純物制御、シード不純物の放射による大面積での出力排熱、および放射不安定性(MARFE)の制御による密度限界の拡張。さらに、プラズマ-壁相互作用を制御する革新的なツールとして、ダイナミック・エルゴディック・ダイバータの新概念を提示する。

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