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The application of digital technology in BEPCII RF system

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Abstract

Background

The Beijing Electron Positron Collider (BEPCII) is a high-brightness collider and operates in compatible mode of synchronous light source. This summer, BEPCII spare cavity, which was all made in China, had been put into BEPCII operation, and the LLRF system for the spare cavity was also upgraded at the time.

Purpose

The purpose is to stably control the amplitude and phase of the spare cavity and apply digital technology to achieve some intelligent functions.

Methods

The digital method is applied in the superconducting cavity feedback control of the accelerator and it introduces the digital technology of the RF low-level control system that has been stably applied to the BEPCII spare cavity operation. In addition, some functions such as quench detector and input protection as well as horizontal test have been realized in the RF system operation.

Results

The amplitude and phase stabilities of cavity voltage with beam in the digital LLRF have reached \(\pm 0.09\%\) (RMS) and \(\pm 0.055^{\circ }\) (RMS), respectively.

Conclusion

The BEPCII spare cavity with digital LLRF system has been stably operated for 2 months. The DLLRF system has been reliable and stable, and the performance of the spare cavity with beam was very good.

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Authors and Affiliations

  1. University of Chinese Academy of Sciences, Beijing, 100049, China

    Mu-Yuan Wang, Wei-Min Pan & Hong-Lei Wang

  2. Institute of High Energy Physics, CAS, Beijing, 100049, China

    Mu-Yuan Wang, Yi Sun, Guang-Wei Wang, Wei-Min Pan, Hai-Ying Lin, Qun-Yao Wang, Qiang Ma, Zhong-Quan Li, Jian-Ping Dai, Peng Sha, Zheng-Hui Mi & Hong-Lei Wang

  3. China National Electronics Import & Export Corporation (CEIEC), Beijing, China

    Dan-Yang Zhao

Authors
  1. Mu-Yuan Wang
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  2. Yi Sun
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  3. Guang-Wei Wang
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  4. Wei-Min Pan
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  5. Hai-Ying Lin
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  6. Qun-Yao Wang
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  7. Qiang Ma
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  8. Zhong-Quan Li
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  9. Jian-Ping Dai
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  10. Peng Sha
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  11. Zheng-Hui Mi
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  12. Hong-Lei Wang
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  13. Dan-Yang Zhao
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Correspondence to Mu-Yuan Wang.

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Cite this article

Wang, MY., Sun, Y., Wang, GW. et al. The application of digital technology in BEPCII RF system. Radiat Detect Technol Methods 2, 16 (2018). https://doi.org/10.1007/s41605-018-0044-4

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  • DOI: https://doi.org/10.1007/s41605-018-0044-4

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