Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2010, Vol. 21 ›› Issue (4): 193-196 doi: 10.13538/j.1001-8042/nst.21.193-196

• SYNCHROTRON TECHNOLOGY AND APPLICATIONS •     Next Articles

Monitoring the charge bunch-by-bunch for the SSRF storage ring: Development and application

LENG Yongbin* YAN Yingbin YU Luyang YUAN Renxian CHEN Zhichu ZHOU Weimin   

  1. Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Shanghai 201800, China
LENG Yongbin, YAN Yingbin, YU Luyang, YUAN Renxian, CHEN Zhichu, ZHOU Weimin. Monitoring the charge bunch-by-bunch for the SSRF storage ring: Development and application.Nuclear Science and Techniques, 2010, 21(4): 193-196     doi: 10.13538/j.1001-8042/nst.21.193-196

Abstract:

Bunch charge uniformity controlling is very important for top-up operation of the storage ring. In order to monitor filling pattern and measure the bunch charge precisely, a PXI waveform digitizer-based data acquisition system has been developed to retrieve bunch charge information from BPM pickup signals. An effective sampling rate is extended to 400 GHz by waveform rebuilding technology, which overlays multi-turn data into single turn with real time sampling rate of 8 GHz. An on-line evaluation indicates that resolution and linearity of the charge measurement are better than 0.5% at input range of 0.5–12 nC.

Key words: Beam diagnostics, Bunch charge monitor, Filling pattern, Top-up, SSRF