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Stable operation of an effectively axisymmetric neutral beam driven tandem mirror

A.W. Molvik, J.D. Barter, D.A. Buchenauer, T.A. Casper, D.L. Correll, G. Dimonte, S. Falabella, J.H. Foote, P.A. Pincosy1990年被引用 7Nuclear FusionIF 3出版社

A quiescent plasma is sustained for 80 energy confinement times by only gas fuelling and neutral beam heating in an axisymmetric region of the Tandem Mirror Experiment Upgrade (TMX-U). This plasma should be unstable because of the bad magnetic curvature and the absence of ion cyclotron heating which previously provided ponderomotive stabilization to sustain plasmas in bad-curvature regions of other axisymmetric mirror experiments. The TMX-U data are consistent with stabilization by a symbiosis between two mechanisms – line tying, which reduces the growth rate, and finite Larmor radius edge stabilization, which can result in quiescent operation.

日本語訳

静かなプラズマは、タンデムミラー実験アップグレード(TMX-U)の軸対称領域において、ガス供給と中性粒子ビーム加熱のみによって、エネルギー閉じ込め時間の80倍にわたって維持される。このプラズマは、悪い磁気曲率と、以前に他の軸対称ミラー実験の悪い曲率領域でプラズマを維持するためにポンデロモーティブ安定化を提供していたイオンサイクロトロン加熱の不在のために、不安定であるはずである。TMX-Uのデータは、成長率を低減するラインタイイングと、静かな運転をもたらす有限ラーモア半径端部安定化という2つのメカニズムの共生による安定化と一致している。

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