Investigation of helicon wave heating and current drive (CD) in toroidal plasma has been carried out with the ray-tracing code GENRAY. The wave trajectories, profiles of power deposition and driven-currents are presented. It is shown that increasing the poloidal launch angle does not change the absorption rate of the wave, but moves the peak of the wave deposition toward the plasma core. Wave frequencies in the range of our interest (460 MHz ∼ 480 MHz) do not change the absorption of the wave. Under low parameter plasmas, we find that both the peak position and magnitude of the wave power deposition are dependent on the launched parallel refractive index n || . With increasing the refractive index, the driving efficiency first increases and then decreases. The parallel refractive index figure of merit for mid-plane launching in HL-2M configuration is 3.2. With high plasma parameters, both the position and magnitude of the driving current are weakly dependent on ...

中文翻译：

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环形等离子体中的螺旋波加热和电流驱动

使用射线追踪代码GENRAY对环形等离子体中的螺旋波加热和电流驱动（CD）进行了研究。给出了波的轨迹，功率分布和驱动电流的分布图。结果表明，增加极向发射角不会改变波的吸收速率，而是会使波沉积的峰值移向等离子体核。在我们感兴趣的范围内（460 MHz〜480 MHz）的波频率不会改变波的吸收率。在低参数等离子体下，我们发现波功率沉积的峰值位置和大小都取决于发射的平行折射率n ||。。随着折射率的增加，驱动效率首先增加，然后降低。HL-2M配置中平面发射的平行折射率因数为3.2。在高等离子参数下，驱动电流的位置和大小都几乎不依赖于...