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Position dependence of the unstable vertical movement of JET plasmas triggered by ELMs

Fabio Villone, Valeria Riccardo, Filippo Sartori, Contributors to the EFDA-JET workprogramme2005年被引用 12Nuclear FusionIF 3出版社

In this paper we report the results of a set of dedicated experiments carried out at JET, aimed at studying the spatial dependence of the excitation of the unstable mode following an edge localized mode (ELM). A dependence of the excitation of the unstable mode on the pre-ELM vertical position can indeed be found, although a neutral point is not present in the explored range. The CREATE_L linearized plasma response model is used to reliably estimate the growth rate and discuss a correct global characterization of ELMs from the point of view of simplified modelling for control. The results indicate that a drop of pressure energy alone is not sufficient but that an increase of magnetic energy should be included.

日本語訳

本論文では、ELM(周辺局在モード)に続く不安定モードの励起の空間依存性を研究することを目的として、JETで実施された一連の専用実験の結果を報告する。不安定モードの励起がELM前の垂直位置に依存することは確かに見出せるが、調査した範囲内では中立点は存在しない。CREATE_L線形化プラズマ応答モデルを用いて成長率を確実に推定し、制御のための簡略化モデリングの観点からELMの正確な全体像を議論する。結果は、圧力エネルギーの低下のみでは不十分であり、磁気エネルギーの増加が含まれるべきであることを示している。

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jet高精度(タイトル一致)

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JETEdge localized mode
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