Development of digital BPM front-end conditioning circuit for BEPCII linac

Yang Jing; Du Yaoyao; Wang Lin; Ye Qiang; Ma Huizhou; Wei Shujun; Yue Junhui; Sui Yanfeng; Gao Guodong; Tang Xuhui; Cao Jianshe

doi:10.11884/HPLPB202133.210046

Volume 33 Issue 5

May 2021

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Article Navigation > High Power Laser and Particle Beams > 2021 > 33(5): 054005

Yang Jing, Du Yaoyao, Wang Lin, et al. Development of digital BPM front-end conditioning circuit for BEPCII linac[J]. High Power Laser and Particle Beams, 2021, 33: 054005. doi: 10.11884/HPLPB202133.210046

Citation:

Yang Jing, Du Yaoyao, Wang Lin, et al. Development of digital BPM front-end conditioning circuit for BEPCII linac[J]. High Power Laser and Particle Beams, 2021, 33: 054005. doi: 10.11884/HPLPB202133.210046

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Development of digital BPM front-end conditioning circuit for BEPCII linac

doi: 10.11884/HPLPB202133.210046

Yang Jing^{1, 2
,},
Du Yaoyao^{1, 2},
Wang Lin¹,
Ye Qiang¹,
Ma Huizhou¹,
Wei Shujun¹,
Yue Junhui¹,
Sui Yanfeng^{1, 2},
Gao Guodong^{1, 2},
Tang Xuhui^{1, 2},
Cao Jianshe^{1, 2
,
,}

1.
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2021-02-07
Rev Recd Date: 2021-04-13

Available Online: 2021-05-15

Publish Date: 2021-05-20

Abstract

Abstract

Aiming to control the rising failure rate of electronics system for BEPC II linac’s beam position measurement, considering the physical design parameters of BEPC II and the requirements of band-pass sampling of BPM electronics ADC chip, a digital BPM RF front-end electronics with high isolation degree and good amplitude and phase consistency is designed. The digital BPM electronics system adopts MicroTCA 4.0 system architecture, takes FPGA as the main controller, and is designed based on EDA software. This paper mainly introduces RF power amplifier, digital adjustable attenuator and bandpass filter in RF front-end electronics module, as well as the laboratory and online test results. In the collision mode of BEPC II, positron beam was used to complete the electronic system online test, and the measurement accuracy of x-direction was about 38.46 μm, while that of y-direction was about 26.16 μm. The measurement accuracy and system stability of the proposed method are better than that of commercial analog BPM electronics module, and can meet the beam position measurement requirements of BEPC II linac.
- BEPC II,
- linac,
- digital BPM,
- phase adjustable,
- RF circuit

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References(15)

References

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