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MHD linear stability analysis in the setting up phase of the RFX-mod experiment

P Zanca, D Terranova2006年Plasma Physics and Controlled FusionIF 2.2出版社

A linear stability analysis of the RFX-mod equilibrium profiles is carried out in cylindrical geometry for the m = 1 modes resonant inside the reversal surface (dynamo modes). The screening effect of the passive structures surrounding the plasma is taken into account. The results show that magnetic perturbations appear as linear instabilities in the setting up of the reversed field pinch configuration before the reversal of the edge toroidal magnetic field. Later on the equilibrium profiles are found marginally stable for linear tearing modes and completely stable for ideal modes.

日本語訳

反転磁場配位(RFX-mod)の平衡プロファイルの線形安定性解析を、円筒幾何学において反転面内部に共鳴するm=1モード(ダイナモモード)に対して実施した。プラズマを囲む受動構造体の遮蔽効果を考慮した。結果は、磁気擾乱が、端部トロイダル磁場の反転前の反転磁場ピンチ配位の立ち上げ過程において線形不安定性として現れることを示している。その後、平衡プロファイルは、線形テアリングモードに対しては限界安定であり、理想モードに対しては完全に安定であることが見出された。

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MagnetohydrodynamicsRFX
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