Abstract
The high-gain free electron lasers (FEL) have given scientists hopes for new scientific discoveries in many frontier research areas. The Shanghai X-Ray Free-Electron Laser (SXFEL) test facility is commissioning at the Shanghai Synchrotron Radiation Facility (SSRF) campus. The Dalian Coherent Light Source (DCLS) has successfully commissioned in the northeast of China, which is the brightest vacuum ultraviolet (VUV) free electron laser facility. The control systems of the two facilities are base on EPICS. The industrial computer, programmable logic controller (PLC) and field programmable gate array (FPGA) are adopt for device control. The archiver is based on the PostgreSQL database. The high-level applications are developed using Python. The details of the control system design, construction and commissioning will be reported in this paper.
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