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本文描述HL-1装置器壁碳化,观察了碳化前后氢的约束时间和再循环现象,同时还观察了加抽气孔栏条件下粒子约束时间和再循环的变化。实验表明,碳化后氢的再循环增大,使用抽气孔栏可以控制壁附近边缘等离子体的粒子密度,粒子约束时间比不用抽气孔栏增大17.7％,再循环系数减小13.2％。
In this paper, the wall carbonation of HL-1 device was described. The hydrogen confinement time and recirculation before and after carbonation were observed. The particle confinement time and recirculation under the condition of exhaust hole were also observed. Experiments show that the recirculation of hydrogen increases after carbonization. The use of the suction hole column can control the particle density of the plasma near the wall. The particle confinement time increases by 17.7% and the recirculation coefficient decreases by 13.2% compared with the non-suction hole column.