强激光与粒子束2025，Vol.37Issue(12)：138-144,7.DOI:10.11884/HPLPB202537.250124
基于ZYNQ的束流损失测量系统电子学设计
Development of beam loss monitor electronics based on ZYNQ
摘要
Abstract
[Background]The china spallation neutron source(CSNS)is a high-current proton accelerator,which 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(including an AXI-DMA-based ADC driver and an 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.关键词
强流质子加速器/束流损失/数据采集/ZYNQ/EPICSKey words
high-current proton accelerator/beam loss/data acquisition/ZYNQ/EPICS分类
核科学引用本文复制引用
曾磊,徐智虹,邱瑞阳,田建民,李芳,黄蔚玲,杨仁俊..基于ZYNQ的束流损失测量系统电子学设计[J].强激光与粒子束,2025,37(12):138-144,7.基金项目
广东省自然科学基金面上项目(2024A1515010016) （2024A1515010016）
