Design of a New Integrated RF Protection System for Heavy-Ion Superconducting Linear Accelerators

Ding Pengcheng; Gao Zheng; Liang Xiying; Han Zicheng; Xue Zongheng; Zhu Zhenglong; Jiang Tiancai; Zeng Rihua

doi:10.11884/HPLPB202638.250307

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Ding Pengcheng, Gao Zheng, Liang Xiying, et al. Design of a New Integrated RF Protection System for Heavy-Ion Superconducting Linear Accelerators[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202638.250307

Citation:

Ding Pengcheng, Gao Zheng, Liang Xiying, et al. Design of a New Integrated RF Protection System for Heavy-Ion Superconducting Linear Accelerators[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202638.250307

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Design of a New Integrated RF Protection System for Heavy-Ion Superconducting Linear Accelerators

doi: 10.11884/HPLPB202638.250307

1.
School of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China
2.
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
3.
Guangdong Provincial Laboratory of Advanced Energy Science and Technology, Huizhou 5l6001, China

Received Date: 2025-09-19
Accepted Date: 2026-01-09
Rev Recd Date: 2026-02-19

Available Online: 2026-03-27

Abstract

Abstract

Background
The iLinac superconducting linear accelerator in the Heavy Ion Accelerator Facility (HIAF) must operate stably for extended periods in a cryogenic vacuum environment, facing risks such as cavity quenches and helium pressure anomalies. Traditional FPGA or PLC-based protection schemes suffer from poor coordination or millisecond-level delays, resulting in inadequate performance for meeting microsecond-level protection requirements.
Purpose
Design of a radio frequency integrated protection system to address issues such as low coordination efficiency, insufficient resource utilization, and high latency, thereby achieving microsecond-level reliable protection.
Methods
A ZYNQ SoC-based architecture combines FPGA parallel processing (for interlocks) and ARM management. Fiber-optic I/O multiplexes multi-source signals, reducing interface count by 75%. Reliability is assessed via MTBF/MTTR analysis.
Results
Experiments indicate that the response time of the fiber-optic interface is less than 1.78 μs, and that of dry-contact signals is below 130 μs. The system enables real-time monitoring of the full-link status of critical signals and provides visual control based on the CS-Studio platform. It has been successfully deployed in the HIAF iLinac superconducting segment and is operating stably.
Conclusions
The system provides microsecond response, high reliability, and centralized monitoring, offering a reusable solution for superconducting accelerator protection.
- superconducting cavity,
- RF system,
- ZYNQ SoC,
- interlock protection,
- real-time monitoring.

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References(17)

References

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