Simulation on effect of poloidal power spectrum on lower hybrid wave propagation

作     者：秦永亮 丁伯江 匡光力 贾华 张立智 

作者机构：Institute of Plasma PhysicsChinese Academy of Sciences 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2010年第19卷第6期

页      面：398-403页

核心收录：

学科分类：07[理学] 070204[理学-等离子体物理] 0702[理学-物理学] 

基　　金：Project supported by the National Natural Science Foundation of China (Grant Nos.10575104 and 10875149) Dean Foundation of Hefei Institute of Physical Science,Chinese Academy of Sciences 

主　　题：simulation lower hybrid wave poloidal wave vector wave coupling 

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.