Finite β Effects on the ICRF and NBI Heating in the Large Helical Device
Finite β Effects on the ICRF and NBI Heating in the Large Helical Device
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大型螺旋装置中 ICRF 和 NBI 加热的有限 β 效应
DOI：
10.13182/fst95-a11947082
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
M. Okamoto
中科院分区：
文献类型：
--
作者：
S. Murakami;N. Nakajima;M. Okamoto
利用Monte Carlo模拟程序，从磁流体动力学平衡的数值计算出发，研究了大螺旋装置（LHD）中有限β效应对ICRF少数加热和NBI加热的影响。大的Shafranov位移发生在有限{beta}中，以改变磁场配置并改变粒子的漂移运动。结果表明，由于有限β效应引起的磁场位形的变化，增加了ICRF加热产生的高能俘获粒子的损失。然而，在有限{beta}中没有观察到明显的热效率变化。研究还发现，在有限{β}范围内，由于Shafranov位移的存在，中性束的沉积轮廓发生了改变，在高密度情况下，中心沉积得到了增强。参考文献10篇，图4。
Finite {beta} effects on the ICRF minority heating and NBI heating are investigated in the Large Helical Device (LHD) by means of the Monte Carlo simulation code using the numerically calculated magnetohydrodynamic equilibrium. The large Shafranov shift occurs in finite {beta} to change the magnetic field configuration and to alter the particle drift motions. It is found that the change of magnetic field configuration due to finite {beta} effects enhances the losses of high energetic trapped particles produced by ICRF heating. However the clear change of heating efficiency is not observed in finite {beta}. It is also found that the deposition profile of neutral beams is modified due to the Shafranov shift in finite {beta} and the center deposition is enhanced in high density case. 10 refs., 4 figs.