高能物理实验数据传输系统的研究和实现

摘要

High energy physics mainly studies elementary particles and the interactions among them through various types of experiments, which yield a tremendous amount of data every day. Also the high energy physics experiments are regional-crossing. How to transfer experimental data reliably and efficiently in real time from the on-site detector to a data center for processing and analysis is one of the most important research topics for each experiment. After considering the requirements from different experiments, this paper introduces a general purpose data transfer system, which meets the needs of various high energy physics experiments through the way of interface definition and configuration files. The sys-tem provides the following functions:multipath source data scanning, data transferring, system information sharing, sys-tem configuration, log management and performance monitoring. At present, the system has been used by the experiment of Jiangmen Underground Neutrino Observatory to transfer the data of photomultiplier tube measurements. The good per-formance of real operation shows the that system satisfies the experiment’s requirements.%高能物理主要通过各种实验来研究基本粒子及其相互作用,每个高能物理实验每天都会产生大量的实验数据.由于高能物理实验异地建设的特点,如何把实验数据实时、可靠的从实验现场传输到远程的数据中心进行处理和分析,是各个实验需要研究的重要课题.介绍了一种通用的高能物理数据传输系统,通过接口定义与配置文件相结合的方法,满足各个高能物理实验的需求.该系统的模块包括:多路径源数据扫描模块、数据传输模块、数据共享模块、系统配置模块、日志和监视模块等.目前,该系统已经应用于江门中微子实验光电倍增管测试的数据传输.实际运行结果表明,该系统性能良好,能够满足实验的需求.