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Quasilinear modelling of RMP interaction with a tokamak plasma: application to ASDEX Upgrade ELM mitigation experiments

Martin F. Heyn, Ivan B. Ivanov, Sergei V. Kasilov, Winfried Kernbichler, Peter Leitner, Viktor V. Nemov, Wolfgang Suttrop, the ASDEX Upgrade Team2014年被引用 21Nuclear FusionIF 3出版社

First experiments on edge-localized mode (ELM) mitigation with the help of ITER-like coils on ASDEX Upgrade are analysed using linear and quasilinear kinetic models to describe the interaction of resonant magnetic field perturbations (RMP) with the plasma. The gyrokinetic derivation of RMP-driven transport coefficients is given in detail. The role of fluid resonances is studied, in particular the role of the resonance associated with the equilibrium electric field reversal point Er = 0. Like the electron fluid resonance associated with the zero of the total perpendicular electron fluid velocity, the Er = 0 resonance may lead to enhanced transport due to the reduction of RMP shielding in the pedestal region where the RMP field can even be amplified by this resonance. The conditions on the RMP coil spectrum resulting from the analysis are discussed.

日本語訳

ASDEX UpgradeにおけるITER類似コイルを用いたエッジ局在モード(ELM)緩和の最初の実験を、プラズマとの共鳴磁場摂動(RMP)の相互作用を記述する線形および準線形運動論モデルを用いて解析した。RMP駆動輸送係数のジャイロ運動論的導出を詳細に示す。流体共鳴の役割、特に平衡電場反転点Er = 0に関連する共鳴の役割を研究した。全垂直電子流体速度のゼロに関連する電子流体共鳴と同様に、Er = 0共鳴は、RMP遮蔽の低減により輸送を増強する可能性があり、ペデスタル領域ではRMP場はこの共鳴によって増幅されることさえある。解析から得られるRMPコイルスペクトルに関する条件について議論する。

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asdex-upgrade高精度(タイトル一致)iter中精度(概要文一致)

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ASDEXEdge localized modeASDEX UpgradeResonant magnetic perturbation
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