Integrated protection system of EAST-NBI high voltage power supply

This paper introduces the integrated protection system of EAST neutron beam injection (NBI) high voltage power supply. From three aspects of protection (main circuits protection, power modules protection and site safety monitoring), it presents the basic principle of the system, describes the hardware and software of site safety monitors, and realizes the design of PC monitoring software using LabVIEW. The system provides effective security for the EAST-NBI high voltage power supply, which produces spark frequently and has a high security risk, and it is of great significance to the safety of personnel and equipment in EAST experiment.