Author: Wu, T.
Paper Title Page
TUAO01 Precise Bunch Charge Measurement Using BPM Pickup 21
 
  • J. Chen, S.S. Cao, F.Z. Chen, B. Gao, L.W. Lai, Y.B. Leng, T. Wu, X.Y. Xu, R.X. Yuan, Y.M. Zhou
    SSRF, Shanghai, People’s Republic of China
 
  Precise bunch charge measurement is the fundamental of charge feedback, beam lifetime measurement, beam loss monitor, as well as the basis of the related interlocking work. Beam position monitor (BPM) is often used for high-precision bunch charge measurement due to its superior performance. In this paper, the pros and cons of different types of BPM for measurement of bunch charge in storage ring and free electron laser (FEL) will be discussed. The related simulations, beam experiment and signal processing methods are also mentioned. The beam experiments results show that the relative bunch charge resolution of the Button BPM can reach 0.02% in SSRF, 0.073% and 0.021% of the SBPM and CBPM in SXFEL, respectively. Besides, based on the method of beam experiments, we systematically studied the position dependence of BPM pickup and related compensation algorithms for high-precision bunch charge measurement.  
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2020-TUAO01  
About • paper received ※ 02 September 2020       paper accepted ※ 17 September 2020       issue date ※ 30 October 2020  
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