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TY - UNPB AU - Li, Y.L. AU - Sun, B.G. ED - Kim, Changbum ED - Schaa, Volker R. W. ED - Kim, Dong-Eon ED - Lee, Jaeyu TI - The Design of a Fast Orbit Feedback System for Hefei Advanced Light Facility J2 - Proc. of IBIC2021, Pohang, Rep. of Korea, 24-28 May 2021 CY - Pohang, Rep. of Korea T2 - International Beam Instrumentation Conference T3 - 10 LA - english AB - In order to improve the stability of the beam orbit, the fast orbit feedback system (FOFB) is employed to eliminate the undesirable interference from various sources. The paper will present the design of the design of the global Fast Orbit Feedback for Hefei Advanced Light Facility (HALF). The FOFB system aims to stabilize the electron beam position towards an ideal electron beam orbit. The FOFB system employs high-speed board series PXIe-7902 board of National Instruments (NI) to realize the design of the communication controller (CC) and the algorithm calculation. The PXIe-7902 called cell has a built-in Xilinx Virtex-7 586T and 24 two-way digital channels. Which allows connecting 12 Liberal BPMs at most to receive the beam position values. A two-tier communication architecture is applied in the CC design. The beam position monitors are directly connected to cell and do not communicate each other. Which liberates the tasks of BPMs and make the task concentrated on the cell. The correction output is connected to the power supply to adjust the correctors to reach beam stability. PB - JACoW Publishing CP - Geneva, Switzerland ER -