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Research and development of the longitudinal feedback system digital signal processing electronics in BEPCII

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Radiation Detection Technology and Methods Aims and scope Submit manuscript

Abstract

Background

The current strategy to achieve high luminosity for high energy physics experiments is to store huge currents distributed in many bunches in circular machines such as BEPCII, so the longitudinal coupled bunch instabilities of the beam are inevitable.

Purpose

Therefore, a longitudinal feedback system is needed to suppress longitudinal oscillation. Otherwise, the beam energy spread will increase; the luminosity and the beam lifetime will decrease under a certain beam current.

Methods

For filter design of the feedback system, the time domain least square fitting (TDLSF) method is compared to the selective wave filter method; digital signal processing electronics based on commercial board have been developed and tested on BEPCII.

Results

The final result shows that the self-developed longitudinal feedback system can suppress the longitudinal beam oscillation at 750 mA beam current and meet the requirements of BEPCII; the restrain depth to the sidebands reaches to 40.8 dB.

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Funding

Work supported by NSFC (Number E0113C5C).

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Authors and Affiliations

  1. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, People’s Republic of China

    Di Yin, Junhui Yue, Huizhou Ma, Jianshe Cao, Shujun Wei, Cunbiao Hao, Yanfeng Sui, Jun He, Jingxia Zhao & Zhi Liu

  2. Accelerator Technology and Key Laboratory of Academy of Physics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, People’s Republic of China

    Di Yin, Junhui Yue, Huizhou Ma, Jianshe Cao, Shujun Wei, Cunbiao Hao, Yanfeng Sui, Jun He, Jingxia Zhao & Zhi Liu

  3. University of Chinese Academy Sciences, Beijing, 100049, People’s Republic of China

    Cunbiao Hao

Authors
  1. Di Yin
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  2. Junhui Yue
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  3. Huizhou Ma
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  4. Jianshe Cao
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  5. Shujun Wei
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  6. Cunbiao Hao
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  7. Yanfeng Sui
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  8. Jun He
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  9. Jingxia Zhao
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  10. Zhi Liu
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Corresponding author

Correspondence to Junhui Yue.

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Cite this article

Yin, D., Yue, J., Ma, H. et al. Research and development of the longitudinal feedback system digital signal processing electronics in BEPCII. Radiat Detect Technol Methods 5, 213–219 (2021). https://doi.org/10.1007/s41605-020-00236-3

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  • DOI: https://doi.org/10.1007/s41605-020-00236-3

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