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Experimental study of density pump-out effect with on-axis electron cyclotron resonance heating at the T-10 tokamak

V F Andreev, A A Borschegovskij, V V Chistyakov, Yu N Dnestrovskij, E P Gorbunov, N V Kasyanova, S E Lysenko, A V Melnikov, T B Myalton, I N Roy2016年Plasma Physics and Controlled FusionIF 2.2出版社

The results of T-10 experiments on the 'density pump-out' effect research, i.e. the escape of particles from the zone of on-axis electron cyclotron resonance heating (ECRH) to the plasma periphery are presented. The dependences of the pump-out on the central chord line-averaged plasma density , total plasma current and the ECRH power were found. The influence of the gas influx intensity and the conditions of the chamber wall and limiter on the above-mentioned effect is also investigated. It is shown that this effect increases with the growth of the up to a certain critical value , after which the escape of particles from the zone of on-axis ECRH decreases. This critical density increases with the increase of the total plasma current and the ECRH power.

日本語訳

T-10実験における「密度ポンプアウト」効果、すなわち軸上電子サイクロトロン共鳴加熱(ECRH)領域からプラズマ周辺部への粒子の流出の研究結果を提示する。ポンプアウトの中心弦線平均プラズマ密度 、全プラズマ電流、およびECRHパワーへの依存性が見出された。ガス流入強度と真空容器壁およびリミッターの状態が上述の効果に及ぼす影響も調査される。この効果は、 の増大とともに、ある臨界値 まで増加し、それを超えると軸上ECRH領域からの粒子の流出は減少することが示される。この臨界密度 は、全プラズマ電流およびECRHパワーの増加とともに増加する。

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Electron cyclotron heatingCyclotron resonanceElectron cyclotron resonance
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