Abstract:
The interlock system is an essential component for the accelerator facility to protect the safety of devices and operators. The interlock system of FELiChEM, which consisted of the hardware interlock system and the software interlock system, was designed based on EPICS. The hardware system is structured in machine protection system (MPS) and personal protection system (PPS). The architecture of hardware interlock system contains IOC layer, Profinet IO controller layer and Profinet IO device layer. Every layer can adopt redundant configuration, and all the layers are separated. According to the test for the prototype system, the response time for hardware interlock system is 2.144 ms, which is much better than the designed requirement 100 ms. The design of software interlock system adopts interlock program and configuration files. The test result shows that the software interlock logic is determined by configuration files totally, which makes the system flexible.