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Study of confinement and LHCD efficiency on the HT-7 tokamak

X Gao, Q Xu, J G Li, J F Shan, L Q Hu, J Y Zhao, the HT-7 Team2008年Plasma Physics and Controlled FusionIF 2.2出版社

High power heating of a lower hybrid wave (LHW) was performed (PLHW ∼ 800 kW at 2.45 GHz) recently in the HT-7 tokamak. Lower hybrid current drive (LHCD) efficiency is studied for different injected powers and for different densities. Improved particle confinement is observed by the application of LHCD as characterized by an increase in the central line averaged electron density and the decrease in Dα emission. The particle confinement time (τp) increased by about 1.5 times. The dependence of energy confinement time (τE) on plasma density and LHW power is experimentally studied in detail.

日本語訳

低ハイブリッド波(LHW)による高電力加熱(PLHW ∼ 800 kW、2.45 GHz)が、最近HT-7トカマクにおいて実施された。低ハイブリッド波電流駆動(LHCD)の効率は、異なる入射電力および異なる密度に対して研究された。LHCDの適用により、中心線平均電子密度の増加とDα発光の減少によって特徴づけられる粒子閉じ込めの改善が観測された。粒子閉じ込め時間(τp)は約1.5倍に増加した。エネルギー閉じ込め時間(τE)のプラズマ密度およびLHWパワーへの依存性が、実験的に詳細に研究された。

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