医科达Precise加速器运动系统原理及故障4例

目的通过分析医科达Precise医用电子直线加速器运动系统原理及相关故障,探讨维修方法,为直线加速器维修提供借鉴意义。方法深入分析医科达Precise加速器运动系统原理,总结仪器特定角度、反方向运动伴抖动现象报i70 Gantry联锁错误、机架不能旋转无联锁报错以及6 MV能量模式报i517 Sctr Limit联锁错误的4例故障,分析可能的故障原因,进行一一排查。结果通过更换电位器、模拟输出板板A08-A、16脚接线、限位开关SW16将出现的4例故障快速有效地解决。结论充分掌握加速器工作原理,根据故障现象,可通过理论分析和实际测量快速排除故障,有效保证设备开机率和良好的运行状态。

Principle and 4 Cases of Troubleshooting in Elekta Precise Linear Accelerator Motion System

Objective To explore the maintenance methods and provide reference for the maintenance of linac by analyzing the motion system principle and related faults of Elekta Precise linear accelerator.Methods The principle of Elekta Precise accelerator motion system was deeply analyzed.Four specific faults of i70 Gantry interlocking error reported by the instrument at specific angles and reverse motion accompanied by jitter,the rack cannot rotate without interlocking error,and the 6 MV energy mode reporting i517 Sctr Limit interlocking error were summarized,the possible failure reasons were analyzed,and one-by-one troubleshooting was performed.Results The four cases of failures were quickly and effectively resolved by replacing the potentiometer,analog output board A08-A,16-pin wiring,and limit switch SW16.Conclusion Maintenance engineers fully grasp the working principle of the accelerator,and based on the failure phenomenon,quickly eliminate the failure through theoretical analysis and actual measurement,which is conducive to effectively ensuring the equipment startup rate and good operating status.