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Overview of RFX-mod results

P. Martin, L. Apolloni, M.E. Puiatti, J. Adamek, M. Agostini, A. Alfier, S.V. Annibaldi, V. Antoni, F. Auriemma, O. Barana2009年被引用 43Nuclear FusionIF 3出版社

With the exploration of the MA plasma current regime in up to 0.5 s long discharges, RFX-mod has opened new and very promising perspectives for the reversed field pinch (RFP) magnetic configuration, and has made significant progress in understanding and improving confinement and in controlling plasma stability. A big leap with respect to previous knowledge and expectations on RFP physics and performance has been made by RFX-mod since the last 2006 IAEA Fusion Energy Conference. A new self-organized helical equilibrium has been experimentally achieved (the Single Helical Axis—SHAx—state), which is the preferred state at high current. Strong core electron transport barriers characterize this regime, with electron temperature gradients comparable to those achieved in tokamaks, and by a factor of 4 improvement in confinement time with respect to the standard RFP. RFX-mod is also providing leading edge results on real-time feedback control of MHD instabilities, of general interest for the fusion community.

日本語訳

MAプラズマ電流領域の探求により、最大0.5秒の放電において、RFX-modは反転磁場ピンチ(RFP)磁気配位に対して新しく非常に有望な展望を開き、閉じ込めの理解と改善、およびプラズマ安定性の制御において大きな進展を遂げました。前回の2006年IAEA核融合エネルギー会議以降、RFX-modはRFP物理と性能に関する従来の知識と期待に対して大きな飛躍を遂げました。新しい自己組織化されたヘリカル平衡が実験的に達成されました(単一ヘリカル軸—SHAx—状態)。これは高電流における好ましい状態です。強いコア電子輸送障壁がこの状態を特徴づけ、電子温度勾配はトカマクで達成されるものに匹敵し、標準RFPに対して閉じ込め時間が4倍改善されます。RFX-modはまた、MHD不安定性のリアルタイムフィードバック制御に関する最先端の結果を提供しており、これは核融合コミュニティにとって一般的な関心事です。

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