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Edge-localized mode control by electron cyclotron waves in a tokamak plasma

J.X. Rossel, J.-M. Moret, S. Coda, O. Sauter, T.P. Goodman, F. Felici, D. Testa, Y. Martin, the TCV Team2012年被引用 30Nuclear FusionIF 3出版社

Electron cyclotron resonance heating is applied to the edge of a high-confinement (H-mode) plasma featuring type I edge-localized modes (ELMs) in the TCV tokamak. As the deposition location is shifted gradually in a highly controlled manner towards the plasma pressure pedestal, an increase in the ELM frequency by a factor 2 and a decrease in the energy loss per ELM by the same factor are observed, even though the power absorption efficiency is reduced. This unexpected and, as yet, unexplained phenomenon, observed for the first time, runs contrary to the intrinsic type I ELM power dependence and provides a new approach for ELM mitigation.

日本語訳

電子サイクロトロン共鳴加熱を、TCVトカマクにおいてタイプI周辺局在モード(ELM)を特徴とする高閉じ込め(Hモード)プラズマの周辺部に印加した。堆積位置を高度に制御された方法でプラズマ圧力ペデスタルに向けて徐々に移動させると、電力吸収効率が低下するにもかかわらず、ELM周波数が2倍に増加し、ELM当たりのエネルギー損失が同じ係数だけ減少することが観測された。この予期せぬ、いまだ説明されていない現象は、初めて観測されたものであり、本質的なタイプI ELMの電力依存性に反するものであり、ELM緩和のための新たなアプローチを提供するものである。

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Edge localized modeCyclotron waveElectron cyclotron wave
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