Current drive by electron cyclotron waves in stellarators
Current drive by electron cyclotron waves in stellarators
复制标题
仿星器中电子回旋波的电流驱动
DOI：
10.1063/1.860376
复制
发表时间：
1992
期刊：
影响因子：
--
通讯作者：
J. Coarasa
中科院分区：
文献类型：
--
作者：
F. Castejón;C. Alejaldre;J. Coarasa
仿星器中的电子回旋电流驱动研究是合理的，因为该方法在控制和补偿不需要的压力诱导等离子体电流方面具有潜力，正如Wendelstain VII-AS仿星器中的实验所示[Fusion Technol. 17，62（1990）]。在本文中，描述了一种方法来估计由电子回旋波引起的感应电流，该方法的计算速度足够快，可以包含在射线跟踪代码中，但能够考虑复杂的仿星器几何形状。特别是，修改的电流驱动效率，由于捕获粒子的影响包括在计算中。一个接近麦克斯韦的电子分布函数和一个接近线性的制度被假定。还介绍了该方法在马德里建造中的TJ-II仿星器的磁位形[Fusion Technol.17，131（1990）]中的应用。
Electron cyclotron current drive studies in stellarators are justified for the potential the method holds in the control and compensation of unwanted, pressure‐induced, plasma currents, as it has been shown experimentally in Wendelstain VII‐AS stellarator [Fusion Technol. 17, 62 (1990)]. In this paper, a method is described to estimate induced currents by electron cyclotron waves that is computationally fast enough to be included in a ray‐tracing code, but is able to account for the complicated stellarator geometry. In particular, the modification of the current drive efficiency due to trapped particles effects is included in the calculation. A close‐to‐Maxwellian electron distribution function and a nearly linear regime are assumed. An application of the method to the magnetic configuration of the TJ‐II stellarator under construction in Madrid [Fusion Technol. 17, 131 (1990)] is also presented.