Versa HD Volume-modulated Accelerator High Voltage Circuit Fault Maintenance.
10.3969/j.issn.1671-7104.2020.04.020
- Author:
Yongjun ZHAO
1
;
Xiao CHEN
1
Author Information
1. Yunnan Cancer Center, Radiotherapy Center, Yunnan Cancer Hospital(the Third Affiliated Hospital of Kunming Medical University), Kunming, 650118.
- Publication Type:Journal Article
- Keywords:
high voltage circuit;
overhaul;
troubleshooting
- MeSH:
Maintenance
- From:
Chinese Journal of Medical Instrumentation
2020;44(4):371-373
- CountryChina
- Language:Chinese
-
Abstract:
This paper introduces a fast repair methods of Versa HD volume-modulated accelerator's high voltage circuit fault:the key points test method. To identify five key points:①Enter maintenance mode to check for AFC deviation; ② The magnetron waveform MI and PFN waveform PFN V are detected on the maintenance terminal board; ③ Detect thyratron waveform; ④ Check the supply voltage of thyratron; ⑤ HT PSU 600 V DC test 600 V normal or not. The waveform or voltage is also measured to efficiently narrow the fault range to find out the cause of the fault, quickly remove the fault.
