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研究了合肥储存环直流清洗电极的清除离子机理，认为此类直流电场能够改变储存（积累）束流势场的轴对称形态；变形后势场形态有利于消除离子陷阱不稳定性，有利于积累束流的增加．提出了适于此类清洗电极的直流清除离子电压与积累束流阈值流强、最高流强的线性关系．
The mechanism of scavenging ion in the DC cleaning electrode of Hefei storage ring was studied. It is considered that the DC electric field can change the axial symmetry of the beam potential field stored (accumulated). The shape of the potential field after deforming is helpful to eliminate the ion trap instability and facilitate the accumulation The increase of the beam. The linear relationship between the dc ionization voltage and the threshold current and the maximum current of the accumulated beam current is proposed.