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为进一步提高HL-2A装置的放电参数和优化等离子体位形,给出了三种可能的主机改造途径:保留真空室,去掉并调整真空室内部分多极场线圈的局部改造方案;保留真空室,重新布局极向场线圈的中等规模改造方案;重新设计真空室和极向场线圈系统的大规模改造方案。对三种改造方案对放电参数和位形的影响和改造工程的可行性进行了分析比较,重新设计真空室和极向场线圈系统的大规模改造方案是最佳选择。
In order to further improve the discharge parameters of HL-2A device and optimize the configuration of plasma, three possible host modifications are given: to keep the vacuum chamber, remove and adjust the partial rebuilding scheme of partial multi-field coils in the vacuum chamber; to keep the vacuum chamber, Re-layout of the field coil of the mid-scale reconstruction program; redesign of the vacuum chamber and the field coil system of large-scale transformation programs. The effects of three reconstruction schemes on discharge parameters and configuration and the feasibility of retrofit projects are analyzed and compared. The large-scale reconstruction project of redesigning vacuum chamber and polar field coil system is the best choice.