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Description
Hefei Advanced Light Facility (HALF) Fast Orbit Feedback (FOFB) system uses 80 fast corrector magnets to stabilize beam orbit measured at 80 Beam Position Monitors (BPM). In order to achieve a closed-loop bandwidth of 500Hz, the system operates with a correction rate of approximately 20kHz. A distributed fast orbit feedback system is designed to control the instability of the beam orbit in storage ring at the submicron level. We design the high-performance feedback processor based on FPGA, and a system verification platform is designed, fabricated, and tested using feedback algorithm in the laboratory. To ensure the reliability of system operation, a system monitoring software is designed based on EPICS. This paper presents the status of the FOFB system, including preliminary open-loop test results.
| Paper status | Resubmitted proceeding files received and assigned to an editor. Ready for Review. |
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