中国物理B ›› 2010, Vol. 19 ›› Issue (6): 65204-065204.doi: 10.1088/1674-1056/19/6/065204
秦永亮, 丁伯江, 匡光力, 贾华, 张立智
Qin Yong-Liang(秦永亮), Ding Bo-Jiang(丁伯江), Kuang Guang-Li(匡光力), Jia Hua(贾华), and Zhang Li-Zhi(张立智)
摘要: The coupling of lower hybrid wave to the plasma is a crucial issue for efficient current drive in tokamaks. This paper establishes a new coupling model which assumes the antenna to be a curved face and the plasma to be a cylinder. Power spectrum considering the coupling between wave-guides in both poloidal and toroidal direction is simply estimated and discussed. The effect of the poloidal wave vector on wave propagation, power deposition and driven current is also investigated with the help of lower hybrid current drive code. Results show that the poloidal wave vector affects the ray tracing, and also has effect on power deposition and driven current. The effect of the poloidal wave vector on power deposition and driven current profile depends on plasma parameters. Preliminary studies suggest that it seems possible to control the current profile by adjusting the poloidal phase difference between the waveguide in poloidal direction.
中图分类号: (Electromagnetic waves (e.g., electron-cyclotron, Whistler, Bernstein, upper hybrid, lower hybrid))