Development of Beam Loss Monitor Electronics Based on ZYNQ

Zeng Lei; Xu Zhihong; Qiu Ruiyang; Tian Jianmin; Li Fang; Huang Weiling; Yang Renjun

doi:10.11884/HPLPB202537.250124

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Zeng Lei, Xu Zhihong, Qiu Ruiyang, et al. Development of Beam Loss Monitor Electronics Based on ZYNQ[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250124

Citation:

Zeng Lei, Xu Zhihong, Qiu Ruiyang, et al. Development of Beam Loss Monitor Electronics Based on ZYNQ[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250124

Zeng Lei, Xu Zhihong, Qiu Ruiyang, et al. Development of Beam Loss Monitor Electronics Based on ZYNQ[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250124

Citation:

Zeng Lei, Xu Zhihong, Qiu Ruiyang, et al. Development of Beam Loss Monitor Electronics Based on ZYNQ[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250124

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Development of Beam Loss Monitor Electronics Based on ZYNQ

doi: 10.11884/HPLPB202537.250124

Zeng Lei^{1, 2
,},
Xu Zhihong^{1, 2},
Qiu Ruiyang^{1, 2},
Tian Jianmin^{1, 2},
Li Fang^{1, 2},
Huang Weiling^{1, 2},
Yang Renjun^{1, 2
,
,}

1.
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
2.
Spallation Neutron Science Center, Dongguan 523803, China

Received Date: 2025-03-21
Accepted Date: 2025-08-02
Rev Recd Date: 2025-09-04

Available Online: 2025-09-13

Abstract

Abstract

Background
The China Spallation Neutron Source (CSNS) is a high-current proton accelerator, relies on its Beam Loss Monitor (BLM) system for critical roles in equipment machine protection and residual activation dose control; in CSNS Phase I, the BLM system adopted NI’s PXIe-6358 acquisition card combined with self-developed front-end analog electronics, while the Rapid Cycling Synchrotron (RCS) of CSNS-II requires an upgraded and fully localized BLM system to meet enhanced operational demands.
Purpose
This study aims to develop a novel ZYNQ-based BLM electronics system to replace the existing NI data acquisition system in CSNS-II RCS, realizing comprehensive functions including beam loss signal acquisition, gain control, Machine Protection Signal (MPS) output, and EPICS PV publishing.
Methods
The system comprises custom-developed components: a 19-inch 3U chassis with a dedicated backplane bus, 3 kV low-ripple high-voltage power modules, front-end analog boards, and digital acquisition boards based on the ZYNQ7020 System-on-Chip (SOC) integrated with AD7060 and LTC2668 , along with developed Linux drivers AXI-DMA-based ADC driver and AXI-GPIO-based gain control driver and EPICS IOC software; it was subjected to laboratory functional tests using 25 Hz, 50 μs–1 ms pulse signals to simulate ion chamber outputs and on-beam tests at the RCS local station.
Results
Laboratory tests validated key functions such as external trigger waveform acquisition, gain control, MPS threshold output, and background subtraction, while on-beam tests at the RCS local station clearly captured beam loss signals and extraction interference signals, with the system achieving 100% localization and meeting all engineering specifications.
Conclusions
In conclusion, the ZYNQ-based BLM system has completed the development of core components and demonstrated full functionality, enabling it to effectively replace the existing NI acquisition system and making it well-suited for beam loss measurement in CSNS-II.
- high-current proton accelerator,
- beam loss,
- data acquisition,
- ZYNQ,
- EPICS

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References(13)

References

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