Synergy of electron-cyclotron and lower-hybrid current drive in steady-state plasmas.
Synergy of electron-cyclotron and lower-hybrid current drive in steady-state plasmas.
复制标题
DOI：
10.1103/physrevlett.93.255002
复制
发表时间：
2004-12
影响因子：
8.6
通讯作者：
G. Giruzzi;J. Artaud;R. Dumont;F. Imbeaux;P. Bibet;G. Berger-by;F. Bouquey;J. Clary;C. Darbos-C.-Da
中科院分区：
文献类型：
--
作者：
G. Giruzzi;J. Artaud;R. Dumont;F. Imbeaux;P. Bibet;G. Berger-by;F. Bouquey;J. Clary;C. Darbos-C.-Da
在Tore Supra托卡马克装置的稳态条件下，通过低杂波电流驱动，等离子体中的电子回旋加速器（EC）电流驱动效率提高了约4倍。这是可能的反馈控制放电在零回路电压，恒定的等离子体电流，和恒定的密度。这种效果，由动力学理论预测，结果从一个有利的相互作用的速度空间扩散引起的两个波：EC波拉低能量的电子的麦克斯韦体，和LH波驱动它们到高的平行速度。
Improvement (up to a factor of approximately 4) of the electron-cyclotron (EC) current drive efficiency in plasmas sustained by lower-hybrid (LH) current drive has been demonstrated in stationary conditions on the Tore Supra tokamak. This was made possible by feedback controlled discharges at zero loop voltage, constant plasma current, and constant density. This effect, predicted by kinetic theory, results from a favorable interplay of the velocity space diffusions induced by the two waves: the EC wave pulling low-energy electrons out of the Maxwellian bulk, and the LH wave driving them to high parallel velocities.