STATUS OF SSRF FAST ORBIT FEEDBACK SYSTEM

As the 3rd generation light source, Shanghai Synchrotron Radiation Facility (SSRF) are pushing the requirement of beam stability to sub-micron in the range of DC to 100Hz. To satisfy this requirement, fast orbit feedback system is introduced into SSRF, which consists of 40 eBPMs and 60 correctors (horizontal and vertical). In this paper, the system structure, the structures of its hardware & software and system performance are presented. At last, the design of mixed orbit feedback system (slow & fast orbit feedback system) is discussed.