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NBI Beam Ion Distributions in the Presence of Magnetic Islands in Helical Plasmas

机译:NBI光束离子分布在螺旋等离子体中存在磁岛

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Neutral beam injection (NBI) heating simulations of Large Helical Device (LHD) plasma in the presence of magnetic islands are performed using a drift kinetic equation solver, GNET. A magnetic perturbation that causes a magnetic island with poloidal and toroidal mode numbers (m, n) = (1, 1) is considered. It is found that the spatial distribution of beam ions for counter-tangential NBI is significantly modified near the magnetic island, exhibiting a strong dependency on the mode phase of the island. The changes in the velocity space distribution and orbits of the transition particles imply an enhancement in the ripple transport of beam ions near the magnetic island.
机译:使用漂移动力学等式求解器,GNet进行磁岛存在的大螺旋装置(LHD)等离子体的中性光束注射(NBI)加热模拟。考虑导致具有磁岛的磁性扰动和具有粒子和环形模式(M,N)=(1,1)的磁岛。结果发现,磁岛附近的反向切向NBI的光束离子的空间分布显着改变,呈现出对岛的模式阶段的强依赖性。过渡颗粒的速度空间分布和轨道的变化意味着磁岛附近的光束离子的纹波传输中的增强。

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