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Three-dimensional corrugation of the plasma edge when magnetic perturbations are applied for edge-localized mode control in MAST

I T Chapman, W A Cooper, A Kirk, C J Ham, J R Harrison, A Patel, S D Pinches, R Scannell, A J Thornton, the MAST Team2012年Plasma Physics and Controlled FusionIF 2.2出版社

The distortion of the plasma boundary when three-dimensional resonant magnetic perturbations (RMPs) are applied has been measured in MAST H-mode plasmas. When the n = 3 RMPs are applied to control edge-localized modes (ELMs), the plasma experiences a strong toroidal corrugation. The displacement of the plasma boundary is measured at various toroidal locations and found to be of the order of 5% of the minor radius for an applied field magnitude which mitigates ELMs. The empirically observed corrugation of the plasma edge position agrees well with three-dimensional ideal plasma equilibrium reconstruction.

日本語訳

MAST Hモードプラズマにおいて、3次元共鳴磁場摂動(RMP)を印加した際のプラズマ境界の歪みが測定された。n = 3のRMPを周辺局在モード(ELM)制御のために印加すると、プラズマは強いトロイダル方向の起伏を経験する。プラズマ境界の変位は様々なトロイダル位置で測定され、ELMを緩和する印加磁場強度において、小半径の約5%程度であることが見出された。実験的に観測されたプラズマ端部の起伏は、3次元理想プラズマ平衡再構成とよく一致する。

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mast高精度(タイトル一致)

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Edge localized modeMagnetic perturbationMAST
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