佳拉洁雅装置中溜槽线圈位置参数对等离子体注入的影响

The Effect of Plasma Injection Influenced by Chute Coil Position Parameters

佳拉洁雅型磁约束装置是非托卡马克磁约束装置的一种。溜槽线圈是等离子体通道的重要组成部分,溜槽线圈的作用是削弱磁阱障壁磁场的磁感应强度,实现等离子体顺利注入磁阱。溜槽线圈的参数会对注入效果产生不同的影响。为了获得更佳的注入参数,将更多地等离子体输运到磁阱,研究了等离子体入射线角度和溜槽线圈与磁阱相对位置对等离子体入射线上磁场强度的影响;并利用有限元仿真软件COMSOL建立了仿真模型,仿真分析了不同参数下的等离子体注入情况。仿真结果表明,当等离子体入射线角度为20°,溜槽线圈距磁阱距离为23 cm时,等离子体注入磁阱的效果最好。

Galatea magnetic confinement device is a non-Tokamak magnetic confinement device. The chute coil is an important part of the plasma guide, it weakens magnetic induction of magnetic trap barrier magnetic field, so that the plasma could successfully injected into the magnetic trap. The parameters of the coil chute have different effects on the injection effect. In order to obtain better injection parameters so that more plasma could be transpor- ted to the magnetic trap, the effect of plasma incident angle and the chute coil position on barrier magnetic field were studied, established the simulation model by using the finite element simulation software COMSOL, and simulated the plasma injection under different parameters. The simulation results show that, when the plasma incident angle is 20° and chute coil from the magnetic trap distance is 23 cm, the effect of plasma injected into the magnetic trap is best.