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故障现象菲利普ＳＬ75-14电子直线加速器在放疗过程中突然出现故障,真空故障指示灯亮,真空表已显示在1333×10-3Ｐａ以下。此时高压加不上,不能开机。马上关掉离子泵电源,以免损坏离子泵。查找故障用真空小车对系统抽空,发现真空不能维持,很快回零。说明泄漏比较严重。针对真空
Symptoms The Philip SL75-14 electron linear accelerator suddenly malfunctions during radiotherapy. The vacuum fault indicator light is on. The vacuum gauge has been displayed below 1333×10-3Pa. The high pressure cannot be added at this time and cannot be turned on. Turn off the ion pump power immediately to avoid damaging the ion pump. The faulty vacuum car was used to evacuate the system. It was found that the vacuum could not be maintained and it was quickly returned to zero. Explain that the leak is serious. For vacuum