J-TEXT装置随机扰动磁场系统的建立与测试
首发时间:2012-05-18
摘要:外加随机扰动磁场是研究托卡马克等离子体约束与输运的一种手段,根据装置的结构特点和相关物理实验的需要,在J-TEXT上正在开展外加随机扰动磁场相关研究。本文分析了J-TEXT需要的随机扰动磁场分布以及扰动模式,重建了随机扰动磁场线圈;根据随机扰动磁场线圈的运行特点,研制了一种基于电容储能的脉冲电源系统及其控制和保护系统;并对扰动磁场线圈及电源系统进行了仿真分析和运行测试。仿真结果和实验结果表明,扰动场线圈和电源系统均稳定可行地工作,可以产生相应的扰动磁场并开展相关物理实验。
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The Establishment of Stochastic Magnetic Perturbation for J-TEXT Tokamak
Abstract:External stochastic magnetic perturbation is an important means to study the confinement and transport of Tokamak plasma. Considering the characteristics of J-TEXT tokamak and the requirements of physical experiment, we are carrying out the studying of External stochastic magnetic perturbation. With the analysis of the profile of stochastic magnetic perturbation and its model for J-TEXT tokamak, we rebuilt and improved the stochastic divertor coil. Because the perturbation field will work 0.5 s per 2 min and require low voltage, high current power supply, we developed a chopper circuit based on capacitive energy storage, the control system and protection system. In this paper, we analyzed this kind of chopper circuit with the experimental results similar to simulation. The stochastic divertor coil and power supply systems are stable and practicable, which can produce corresponding magnetic perturbation and support the physical experiments.
Keywords: J-TEXT;stochastic magnetic perturbation capacitor energy storage chopper circuit
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