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 ›› 2018, Vol. 29 ›› Issue (3): 32 doi: 10.1007/s41365-018-0369-1


Preliminary design of a femtosecond timing system for large accelerator facilities

Ming Liu 1, Xiao-Lei Dai 1, Chong-Xian Yin 1, Bin-Qing Zhao 1,2   

  1. 1 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
    2 University of Chinese Academy of Sciences, Beijing 100049, China
  • Contact: Ming Liu
  • Supported by:

    This work was supported by the Youth Innovation Promotion Association CAS (No. 2016238) and the National Natural Science Foundation of China (No. 11305246).

PDF ShareIt Export Citation
Ming Liu, Xiao-Lei Dai, Chong-Xian Yin, Bin-Qing Zhao. Preliminary design of a femtosecond timing system for large accelerator facilities.Nuclear Science and Techniques, 2018, 29(3): 32     doi: 10.1007/s41365-018-0369-1


Large accelerator facilities require clocks and triggers with high accuracy to synchronize equipment and devices. A new femtosecond timing system was designed to meet the demands of new facilities. In this system, the radio-frequency signal is modulated in a continuous-wave laser carrier with frequency stabilization, and timing events are distributed in the same fiber. The phase drift is detected precisely, based on the principle of the Michelson interferometer. The phase drift is compensated with coarse and fine correctors afterward. We aim to realize the stable transmission of the RF signal and timing events for a long distance and duration, with the phase drift and additive jitter in femtoseconds. After the extension, the system will become a complete solution for the clock-and-trigger distribution of synchrotron radiation facilities, free-electron lasers, and other accelerators. The physics design, simulation analysis, and preliminary results are included in the paper.

Key words: Timing system, Large accelerator facilities, Synchronization in femtoseconds