MIA analysis of FPGA BPMs and beam optics at APS

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JI Da-Heng, WANG Chun-Xi and QIN Qing. MIA analysis of FPGA BPMs and beam optics at APS[J]. Chinese Physics C, 2012, 36(11): 1120-1125. doi: 10.1088/1674-1137/36/11/015
JI Da-Heng, WANG Chun-Xi and QIN Qing. MIA analysis of FPGA BPMs and beam optics at APS[J]. Chinese Physics C, 2012, 36(11): 1120-1125.  doi: 10.1088/1674-1137/36/11/015 shu
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Received: 2012-02-03
Revised: 1900-01-01
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MIA analysis of FPGA BPMs and beam optics at APS

    Corresponding author: JI Da-Heng,
    Corresponding author: WANG Chun-Xi,

Abstract: Model independent analysis, which was developed for high precision and fast beam dynamics analysis, is a promising diagnostic tool for modern accelerators. We implemented a series of methods to analyze the turn-by-turn BPM data. Green's functions corresponding to the local transfer matrix elements R12 or R34 are extracted from BPM data and fitted with the model lattice using least-square fitting. Here, we report experimental results obtained from analyzing the transverse motion of a beam in the storage ring at the Advanced Photon Source. BPM gains and uncoupled optics parameters are successfully determined. Quadrupole strengths are adjusted for fitting but can not be uniquely determined in general due to an insufficient number of BPMs.

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