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在聚变装置中等离子体边界条件对整个等离子体约束性能的影响是非常敏感的。L-H模转换机制与边界径向电场E_r,E_r的梯度及极向旋转速度等参数密切相关;同时,边缘等离子体的径向输运与边缘极向电场E_θ的变化有关。在HL-1M装置中利用低杂波(LHW)注入和电子回旋加热(ECRH)实验,观测边缘等离子体流速和电场的径向分布和变化来研究改善约束性能与E_θ,E_r,dE_r/dr及边界涨落的关系。
The effect of plasma boundary conditions on the overall plasma confinement performance in fusion devices is very sensitive. The L-H mode conversion mechanism is closely related to the gradient and polar rotation speed of the boundary radial electric fields E_r and E_r. Meanwhile, the radial transport of the edge plasma is related to the change of the edge electric field E_θ. Using LHW injection and electron cyclotron heating (ECRH) experiments, the radial distribution and variation of edge plasma velocity and electric field were observed to study the effects of improving the confinement properties with E_θ, E_r, dE_r / dr and The relationship between the fluctuations of the border.