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Resistive wall mode control code maturity: progress and specific examples

Yueqiang Liu, M S Chu, W F Guo, F Villone, R Albanese, G Ambrosino, M Baruzzo, T Bolzonella, I T Chapman, A M Garofalo2010年Plasma Physics and Controlled FusionIF 2.2出版社

Two issues of the resistive wall mode (RWM) control code maturity are addressed: the inclusion of advanced mode damping physics beyond the ideal MHD description, and the possibility of taking into account the influence of 3D features of the conducting structures on the mode stability and control. Examples of formulations and computational results are given, using the MARS-F/K codes and the CarMa code. The MARS-K calculations for a DIII-D plasma shows that the fast ion contributions, which can give additional drift kinetic stabilization in the perturbative approach, also drive an extra unstable branch of mode in the self-consistent kinetic modelling. The CarMa modelling for the ITER steady state advanced plasmas shows about 20% reduction in the RWM growth rate by the volumetric blanket modules. The multi-mode analysis predicts a weak interaction between the n = 0 and the n = 1 RWMs, due to the 3D ITER walls. The CarMa code is also successfully applied to model the realistic feedback experiments in RFX.

日本語訳

抵抗性壁モード(RWM)制御コードの2つの問題点について論じる:理想MHD記述を超えた高度なモード減衰物理の組み込み、および導体構造の3次元性がモード安定性と制御に及ぼす影響の考慮である。MARS-K/MARS-FコードおよびCarMaコードを用いた定式化と計算結果の例を示す。DIII-Dプラズマに対するMARS-K計算では、摂動的アプローチにおいて追加のドリフト運動論的安定化をもたらす高速イオン寄与が、自己無撞着な運動論的モデリングにおいてはモードの追加的な不安定分岐を駆動することが示された。ITER定常先進プラズマに対するCarMaモデリングでは、体積ブランケットモジュールによりRWM成長率が約20%低減することが示された。多モード解析では、3次元ITER壁によるn=0とn=1のRWM間の弱い相互作用が予測された。CarMaコードはまた、RFXにおける現実的なフィードバック制御のモデリングにも適用され、成功を収めている。

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diii-d低精度(概要文一致)iter低精度(概要文一致)

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Resistive wall mode
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