CSNS多物理谱仪T0信号监测系统设计与实现
Nuclear Techniques(2021)
Abstract
质子打靶时刻T0作为中国散裂中子源(Chinese Spallation Neutron Source,CSNS)多物理谱仪的初始触发信号,其高准确性和高稳定性是谱仪高效运行的前提和基础.在实验物理和工业控制系统(Experimental Physics and Industrial Control System,EPICS)平台上开发了一套CSNS多物理谱仪T0信号触发监测系统.T0信号接入T0扇出器标记高精度时间戳,采用高吞吐量的分布式发布订阅消息系统Kafka来实现大数据流量的削峰和异步通信.监测数据作为过程变量(Process Variable,PV)上传EPICS,利用Open-Falcon监控系统和可视化工具Grafana实现对数据的监测与可视化.该系统可以对T0信号的频率和T0在扇出与传输过程中的时间延迟进行实时监测,从而保证CSNS多物理谱仪的正常运行.
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Key words
t0 signal,epics,kafka,monitoring,chinese spallation neutron source
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