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Dependence of resonant magnetic perturbation experiments on the DIII-D plasma shape

B. Hudson, T. Evans, C. Petty, P. Snyder2010年被引用 10Nuclear FusionIF 3出版社

The shape of the cross-section of fusion plasma experiments in many devices is a key determinant of the resulting plasma characteristics. Experiments to attempt suppression of edge localized modes (ELMs) by the technique of resonant magnetic perturbation (RMP) were performed in the DIII-D tokamak in varying plasma shapes. It was found that while ELM suppression in a plasma shape similar to the ITER shape with a single magnetic null was possible, ELM suppression could not be attained in a balanced or upward-biased double-null (DN) shape, although the ELMs in the DN shape were smaller and of higher frequency than the ones before RMP was applied. Calculation of the peeling–ballooning stability of the plasma showed that the ELMing plasma is stable to type-I ELMs, suggesting the ELMs are of another type.

日本語訳

多くの装置における核融合プラズマ実験の断面形状は、結果として得られるプラズマ特性の主要な決定要因である。共鳴磁場摂動(RMP)法による周辺局在モード(ELM)の抑制を試みる実験が、DIII-Dトカマクにおいて様々なプラズマ形状で実施された。単一磁気ヌルを有するITER形状に類似したプラズマ形状ではELM抑制が可能である一方、バランスの取れた、または上方向に偏ったダブルヌル(DN)形状ではELM抑制は達成できなかったが、DN形状におけるELMはRMP印加前のものよりも小さく、周波数が高かったことが見出された。プラズマのピーリング–バルーニング安定性の計算は、ELMが発生しているプラズマがtype-I ELMに対して安定であることを示し、ELMが別のタイプであることを示唆している。

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diii-d高精度(タイトル一致)iter中精度(概要文一致)

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DIII-DMagnetic perturbationResonant magnetic perturbation
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