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 ›› 2017, Vol. 28 ›› Issue (4): 51 doi: 10.1007/s41365-017-0195-x


Beam test results of high Q CBPM prototype for SXFEL

Jian Chen1,2 • Yong-Bin Leng1 • Lu-Yang Yu1 • Long-Wei Lai1 • Ren-Xian Yuan1   

  1. 1 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China
    2 University of the Chinese Academy of Sciences, Beijing 100049, China
  • Contact: Yong-Bin Leng
  • Supported by:

    Supported by the National Natural Science Foundation of China (Nos. 11575282 and 11305253).

PDF ShareIt Export Citation
Jian Chen, Yong-Bin Leng, Lu-Yang Yu, Long-Wei La, Ren-Xian Yuan. Beam test results of high Q CBPM prototype for SXFEL.Nuclear Science and Techniques, 2017, 28(4): 51     doi: 10.1007/s41365-017-0195-x


In pursuit of high-precision beam position measurements at micrometers or submicrometers for the Shanghai soft X-ray free-electron laser (SXFEL) facility which is under construction in the vicinity of the Shanghai Synchrotron Radiation Facility, a high Q cavity beam position monitor (CBPM) with a resonant frequency of 4.7 GHz is developed by the Shanghai Institute of Applied Physics, and the relevant BPM electronics with a dedicated RF front end, and a digital BPM, are completed. The cavity design, cold test, system architecture, and first beam test are performed at the Shanghai deep ultraviolet free-electron laser (Zhao et al. in Nucl Instrum Meth A 528(1–2): 591–594, 2004. doi:10.1016/j.nima.2004.04.108) facility. Results of the beam experiment show that the performance of the CBPM is consistent with basic expectations, and the beam position resolution can fulfill the requirements for the SXFEL project if the beam conditions are optimized.

Key words: High Q CBPM, SXFEL, Position resolution, RF front end, DBPM