Upgrade the control system of hirfl-csr based-on epics

Control system of HIRFL-CSR accelerator is now upgrading to new architecture based on Experimental Physics and Industrial Control System (EPICS). Design and implement power supply subsystem, data distribution subsystem, data acquisition subsystem, etc. This paper describes the design and implementation of the control system and introduce the next work for upgrading synchronization subsystem and middle/high level applications.