CSNS多物理谱仪T0信号监测系统设计与实现  

Design and implementation of T0 signal monitoring system of CSNS multi-physical spectrometer

作　　者：严泽 李嘉杰 王小胡[1,4] 庄建[2,3] YAN Ze;LI Jiajie;WANG Xiaohu;ZHUANG Jian(National Defense Science and Technology College,Southwest University of Science and Technology,Mianyang 621010,China;Spallation Neutron Source Science Center,Dongguan 523803,China;Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China;Advanced Materials Testing Technology Research Center,Shenzhen Technology University,Shenzhen 518118,China)

机构地区：[1]西南科技大学国防科技学院,绵阳621010 [2]散裂中子源科学中心,东莞523803 [3]中国科学院高能物理研究所,北京100049 [4]深圳技术大学先进材料测试技术研究中心,深圳518118

出　　处：《核技术》2021年第12期47-54,共8页Nuclear Techniques

基　　金：国家自然科学基金项目(No.U1832117);核探测与核电子学国家重点实验室项目(No.SKLPDE-ZZ-202103)资助。

摘　　要：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。[Background]The high accuracy and high stability of the T0 signal,taking from initial proton target time,are the prerequisite and basis for the efficient operation of the multi-physics spectrometer of Chinese spallation neutron source(CSNS).[Purpose]This study aims to develop a set of CSNS multi-physical spectrometer T0 trigger monitor system running on the experimental physics and industrial control system(EPICS)platform.[Methods]First of all,the T0 signal was fed into the T0 fan out device for high precise time stamp marking,and the high-throughput distributed publish-subscribe messaging system Kafka was used to achieve peak-shaving and asynchronous communication of big data traffic.Then,the monitored data was uploaded to the EPICS platform as a process variable(PV),and the Open-Falcon monitoring system and the visualization tool Grafana were used to realize the monitoring and visualization of the data.[Results&Conclusions]Implemented T0 signal monitoring system can monitor the frequency of the T0 signal of each node and the time delay of T0 in the fan-out and transmission process in real time.so as to ensure the normal operation of the CSNS multi-physics spectrometer.

关 键 词：T0信号 EPICS Kafka 监测 中国散裂中子源 

分 类 号：TL8[核科学技术—核技术及应用]