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A high-power and high-stability power supply design



BEPCII is a high-performance collider with a design energy of 2.1 GeV. In order to obtain more physical experiments and synchrotron radiation applications, BEPCII decided to carry out energy upgrading to 2.5 GeV. Insufficient energy of special magnet power supplies in collision zone is a key factor restricting BEPCII's operation under 2.5 GeV energy. Therefore, three high-power and high-stability power supplies are designed for BEPCII energy upgrading.


The designed power supplies output part adopts high-frequency chopper modules parallel connected and adopts digital-analog hybrid control methods. The voltage loop regulator uses high-speed analog control, and current loop regulator uses digital control which is based on FPGA.


The experimental data show that the output current stability of the developed power supplies is lower than 50 ppm. The output current resolution is lower than 70 ppm. The developed power supplies can well meet the design requirements of BEPCII energy upgrading.

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  1. M. Ablikim et al., [BESIII collaboration], measurements of absolute hadronic branching fractions of theΛc+ baryon. Phys. Rev. Lett. 116, 052001 (2016)

    ADS  Article  Google Scholar 

  2. M. Ablikim et al., [BESIII collaboration], measurement of the absolute branching fraction. Phys. Rev. Lett. 115, 221805 (2015)

    ADS  Article  Google Scholar 

  3. Q. Qin, The history and current situation of Beijing Electron Positron Collider, video. Accessed 18 Oct 2018

  4. X.L. Guo, B. Chen, C. Han, Y. Gao, Development of dipole magnet power supply for BEPC-II energy upgrading project. Radiat. Detect. Technol. Methods 14, 1–5 (2019).

    Article  Google Scholar 

  5. Z.H.A.O. Yibo, H.E. Xiangning, Digital control for power electronic circuits. Power Supply Technol. Appl. 5(11), 557–559 (2002). (in Chinese)

    Google Scholar 

  6. F.L. Long, J. Cheng, Design of digital regulating loop based on field programmable gate array. At. Energy Sci. Technol. 43(9), 780–784 (2009)

    Google Scholar 

  7. Y. Lu, J. Lai, VHDL and Digital Circuit Design (Science Press, Beijing, 2001), pp. 207–218

    Google Scholar 

  8. V.A. Pedroni, Circuit Design with VHDL (Publishing House of Electronics Industry, Beijing, 2013), pp. 85–88

    Google Scholar 

  9. P. Liu, Research on Fast Corrector Magnet Power Supply for HEPS[D] (University of Chinese Academy of Sciences, Beijing, 2020).

    Google Scholar 

  10. B. Song, J. Wang, Mathematical modeling and analysis of a wide bandwidth bipolar power supply for the fast correctors in the APS upgrade controller, in Proceedings of the 6th International Particle Accelerator Conference, pp. 3264–3266 (2015)

  11. P. Liu, F.L. Long, A precision ADC sampling system design. Radiat. Detect. Technol. Methods (2020).

    Article  Google Scholar 

  12. Datasheet of AD8382. Accessed 13 June 2018

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Correspondence to P. Liu.

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Liu, P., Chen, B. & Wei, P.F. A high-power and high-stability power supply design. Radiat Detect Technol Methods 5, 307–313 (2021).

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  • BEPCII energy upgrading
  • High-frequency chopper
  • High stability
  • Digital-analog hybrid control