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通过对ＨＬ－１Ｍ装置的氦直流辉光放电清洗（Ｈｅ－ＧＤＣ）的放电特点和清除率的研究，发现环形真空室的对称性导致与阳极截面对称的区域的场强很弱，使其阴极位降区的厚度远大于氦离子的平均自由程，严重影响清除率，因此提出采用多电极不对称阳极电位的辉光放电来提高清除率；同时发现，辉光放电清洗使氢分压比托卡马克放电的送氢压强低一个量级以上，才能重复进行好的有辅助加料的托卡马克放电。
By studying the discharge characteristics and scavenging efficiency of Helium-DC Glow Discharge Cleaner (He-GDC) in the HL-1M device, it was found that the symmetry of the toroidal vacuum chamber resulted in a weak field strength in the region symmetrical to the cross section of the anode so that the cathode The thickness of the drop zone is much larger than the mean free path of helium ions, which seriously affects the clearance rate. Therefore, the glow discharge with multi-electrode asymmetric anode potential is proposed to improve the scavenging efficiency. It is also found that the glow discharge cleaning makes the hydrogen partial pressure ratio The discharge pressure of the carbamazer is more than one order of magnitude lower than that of hydrogen, so that a good tokamak discharge with auxiliary charging can be repeated.