回旋加速器离子源故障分析

摘要

Objective：To analyze causes of fault of ion source of the medical cyclotron to deal with fault diagnosis. Methods：The fault reasons were judged by using the software of MSS maintenance. Then the vacuum cavity was opened to install ion source at the correct position by using the special tools. Finally, the ion source system and RF system were debugged with the software of MSS. Results：Observation of the parameters of the RF system and ion source system showed that the system was stable when the cyclotron worked in 25 μA. Conclusion：To maintain ion source system well, we should make ion source has the more long life.%目的;分析医用回旋加速器的离子源故障产生的原因,并进行故障的处理。方法：用MSS维修软件判断故障产生的原因,打开真空腔对离子源进行处理,并用离子源专用工具将离子源安装于正确位置,最后用MSS软件对回旋加速器的射频系统和离子源系统进行调试。结果：通过观察射频和离子源系统的参数,最终在工作束流25μA时系统达到稳定。结论：要维护好离子源系统,使离子源有更长的寿命,工作束流应该在满足临床需要的前提下尽可能小一些,以减小系统的打火,延长使用寿命。