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Numerical studies of active current profile control in the reversed-field pinch

J-E Dahlin, J Scheffel, J K Anderson2007年Plasma Physics and Controlled FusionIF 2.2出版社

Quenching of the reversed-field pinch (RFP) dynamo is observed in numerical simulations using current profile control. A novel algorithm employing active feedback of the dynamo field has been utilized. The quasi-steady state achieved represents an important improvement as compared with earlier numerical work and may indicate a direction for the design of future experiments. Both earlier and the novel schemes of feedback control result in quasi-single helicity states. The energy confinement time and poloidal beta are observed to be substantially increased, as compared with the conventional RFP, in both the cases. Different techniques for experimental implementation are discussed.

日本語訳

反転磁場ピンチ(RFP)ダイナモの焼き入れが、電流分布制御を用いた数値シミュレーションにおいて観測された。ダイナモの能動フィードバックを利用した新しいアルゴリズムが用いられた。達成された準定常状態は、従来の数値計算と比較して重要な進歩を示しており、将来の実験設計の指針となる可能性がある。フィードバック制御の従来方式と新しい方式の両方において、準単一ヘリシティ状態が実現された。従来のRFPと比較して、エネルギー閉じ込め時間とポロイダルベータ値が両方のケースで大幅に向上した。実験的実装のための様々な手法について議論する。

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Reversed field pinchCurrent profile
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