| Simulation on effect of poloidal power spectrum on lower hybrid wave propagation |
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| 作者姓名： | 秦永亮 丁伯江 匡光力 贾华 张立智 |
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| 作者单位： | Institute of Plasma Physics, Chinese Academy of Sciences, Hefei
230031, China;Institute of Plasma Physics, Chinese Academy of Sciences, Hefei
230031, China;Institute of Plasma Physics, Chinese Academy of Sciences, Hefei
230031, China;Institute of Plasma Physics, Chinese Academy of Sciences, Hefei
230031, China;Institute of Plasma Physics, Chinese Academy of Sciences, Hefei
230031, China |
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| 基金项目： | Project supported by the National
Natural Science Foundation of China (Grant Nos.~10575104 and
10875149) and by Dean Foundation of Hefei Institute of Physical
Science, Chinese Academy of Sciences. |
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| 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.
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| 关 键 词： | simulation lower hybrid wave poloidal wave vector wave coupling |
| 收稿时间： | 4/7/2009 12:00:00 AM |
Simulation on effect of poloidal power spectrum on lower hybrid wave propagation |
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| Qin Yong-Liang,Ding Bo-Jiang,Kuang Guang-Li,Jia Hua and Zhang Li-Zhi.Simulation on effect of poloidal power spectrum on lower hybrid wave propagation[J].Chinese Physics B,2010,19(6):65204-065204. |
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| Authors: | Qin Yong-Liang Ding Bo-Jiang Kuang Guang-Li Jia Hua and Zhang Li-Zhi |
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| Affiliation: | Institute of Plasma Physics, Chinese Academy of Sciences, Hefei
230031, China |
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| Abstract: | 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. |
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| Keywords: | simulation lower hybrid wave poloidal wave vector wave
coupling |
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