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本文描述了HL-1装置送气系统的结构、性能和实验结果。送气系统提供的稳态和脉冲送气方式成功地运用于各种物理实验和密度控制。观察了不同送气方式放电下密度变化特性,发现在较低的初始气压(0.6—1×10~(-1)Pa)下有控制地加入多脉冲补充送气,能有效地控制密度和改善等离子体性能,送气滞后时间小于8ms,故可用于反馈控制。
This article describes the structure, performance and experimental results of the air delivery system of the HL-1 unit. The steady-state and pulsed air delivery provided by the air delivery system has been successfully applied to various physical experiments and density control. The variation of density under different gas discharges was observed. It was found that adding multi-pulse gas at low initial pressure (0.6-1 × 10 ~ (-1) Pa) could effectively control the density and improve the plasma Performance, gas lag time less than 8ms, it can be used for feedback control.