Author: Zhang, N.
Paper Title Page
WEPGW061 Bunch Length Measurement Using Multi-Frequency Harmonic Analysis Method at SSRF 2616
 
  • Y.M. Zhou, B. Gao, Y.B. Leng, N. Zhang
    SSRF, Shanghai, People’s Republic of China
 
  Harmonics method in the frequency domain is an effective and inexpensive bunch length measurement method, which was implemented at the Shanghai Synchrotron Radiation Facility (SSRF). A multi-frequency bunch-bybunch length measurement system using an integrated RF conditioning module will be established to reduce the system noise and signal reflection, and to improve the bunch length measurement accuracy as well. The module consists of power splitters, band-pass filters, mixers and so on. The main function of the integrated RF conditioning module is to extract the beam signals at 500MHz, 1.5GHz, 2GHz, and 3GHz operating frequency. Raw data are acquired by a high-precision digitizer and analyzed by MATLAB code. The absolute bunch length can be obtained with a streak camera, which was used to calibrate the response coefficients of the system. Bunch-by-bunch length can be measured by the multi-frequency harmonic analysis method from the button BPM  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2019-WEPGW061  
About • paper received ※ 15 May 2019       paper accepted ※ 18 May 2019       issue date ※ 21 June 2019  
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