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Overview of Alfven eigenmode experiments in JET

A. Fasoli, J.B. Lister, S.E. Sharapov, S. Ali-Arshad, G. Bosia, D. Borba, D.J. Campbell, N. Deliyanakis, J.A. Dobbing, C. Gormezano1995年被引用 51Nuclear FusionIF 3出版社

Results from the first experiments to drive Alfven eigenmodes (AEs) with antennas external to a tokamak plasma are presented. In ohmically heated plasma discharges, direct experimental measurements of the damping of toroidicity induced AEs (TAEs) have allowed an identification of different regimes corresponding to different dominant TAE absorption mechanisms with a wide range of damping rates, 10-3 ⩽ γ/w ⩽ 10-1. In plasmas heated by ion cyclotron resonance heating, neutral beam injection heating, lower hybrid heating and high plasma current ohmic heating, a new class of weakly damped Alfven eigenmodes, the kinetic Alfven eigenmodes, predicted in theoretical models that include finite Larmor radius and finite parallel electric field effects, has been identified experimentally

日本語訳

トカマクプラズマ外部のアンテナを用いてアルフヴェン固有モード(AE)を駆動する最初の実験結果を示す。オーミック加熱プラズマ放電において、トロイダル性誘起AE(TAE)の減衰の直接実験測定により、広範囲の減衰率10-3 ⩽ γ/w ⩽ 10-1を有する異なる支配的なTAE吸収機構に対応する異なる領域の同定が可能となった。イオンサイクロトロン共鳴加熱、中性粒子ビーム入射加熱、低域混成波加熱、および高プラズマ電流オーミック加熱によって加熱されたプラズマでは、有限ラーマー半径効果と有限平行電場効果を含む理論モデルで予測された新しいクラスの弱減衰アルフヴェン固有モード、すなわち運動論的アルフヴェン固有モードが実験的に同定された。

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