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采用多粒子跟踪程序BEAMPATH对53.667 MHz RFQ进行模拟计算,基于RFQ腔体冷测、机械测量的结果,在考虑其入口束流不稳定性、电压不平整度、高频系统稳定度、加工误差、安装误差等因素的情况下,对RFQ的出口束流品质和不稳定性进行了系统分析。结果表明,在现有的加工、安装水平下,提高RFQ入口束流稳定度和高频系统稳定度对束流在RFQ中的传输十分必要。
The multi-particle tracking program BEAMPATH was used to simulate the RFQ of 53.667 MHz. Based on the results of RFQ cavity cold measurement and mechanical measurement, the inlet beam instability, voltage irregularity, high frequency system stability, machining error, Installation error and other factors, the RFQ export beam quality and instability were systematically analyzed. The results show that it is necessary to improve the stability of the RFQ inlet beam and the stability of the RF system to transmit the beam in the RFQ under the existing processing and installation level.