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ELM suppression by resonant magnetic perturbation in high-performance, stationary plasmas

B. Hudson, T.E. Evans, T.H. Osborne, C.C. Petty, P.B. Snyder, E.A. Unterberg2010年被引用 9Nuclear FusionIF 3出版社

The method of resonant magnetic perturbation (RMP) has been shown to suppress edge-localized modes (ELMs) in the high-performance, stationary (or 'hybrid') scenario in the DIII-D tokamak. Calculations of stability to peeling–ballooning (P–B) modes are shown to be consistent with the observed suppression of type-I ELMs, while the ELM suppression, dependence on edge safety factor and density pump-out are similar for hybrids and standard H-mode discharges. However, other small ELMs can appear when the edge safety factor is outside the resonance window or when the H-mode pedestal is perturbed, which are not related to P–B stability. The role of the edge bootstrap current in determining stochastic heat transport during RMP is discussed.

日本語訳

共鳴磁場摂動(RMP)の手法は、DIII-Dトカマクにおける高性能・定常(または「ハイブリッド」)シナリオにおいて、周辺局在モード(ELM)を抑制できることが実証されている。ピーリング・バルーニング(P–B)モードに対する安定性の計算は、タイプI ELMの観測された抑制と一致することが示されており、ELM抑制、周辺安全係数への依存性、密度ポンプアウトは、ハイブリッドと標準的なHモード放電で類似している。しかしながら、周辺安全係数が共鳴窓の外にある場合や、Hモード・ペデスタルが摂動を受けた場合には、P–B安定性とは無関係な他の小さなELMが現れることがある。RMP中の確率熱輸送を決定する際の周辺ブートストラップ電流の役割について議論する。

装置

diii-d中精度(概要文一致)

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Edge localized modeMagnetic perturbationResonant magnetic perturbation
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