摘要:故障现象:Varian clinac 2300EX直线加速器,使用1年后,加速管真空度开始逐步降低,钛溅射离子泵的电流指示值由10μA增加到今年2月的50μA左右.虽未影响机器工作,但已成为严重隐患,如果真空出现故障,整台机器就不能工作,必须及时加以检修.
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