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 ›› 2014, Vol. 25 ›› Issue (6): 060103 doi: 10.13538/j.1001-8042/nst.25.060103


Development of button-type pickup for SSRF ring

ZHAO Guo-Bi1 , YUAN Ren-Xian 1, CHEN Zhi-Chu 1, ZHOU Wei-Min1 , and LENG Yong-Bin1   

  1. 1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
  • Contact: LENG Yong-Bin
ZHAO Guo-Bi, YUAN Ren-Xian, CHEN Zhi-Chu, ZHOU Wei-Min, and LENG Yong-Bin . Development of button-type pickup for SSRF ring.Nuclear Science and Techniques, 2014, 25(6): 060103     doi: 10.13538/j.1001-8042/nst.25.060103


In building Shanghai Synchrotron Radiation Facility (SSRF), in order to reduce or eliminate the unnecessary
sources of beam motion, the precise and stable beam position measurement system in the feedback system was
required. In this study, we focused on theoretical analysis of the electrode of beam position monitor (BPM).
Simulations, including analytic derivations of the propagation impedance and the distribution inductance, were
performed. The BPM was designed based on the results and the acceptance measurements of the impedance
and the inductance by using the time domain reflection (TDR) with a network analyzer. It has been proved in
years of operations that the BPM system meets the requirement of the resolution of sub-micron.

Key words: SSRF, BPM, Position sensitivity, Cut-off frequency, Distributed capacitance