Si Ma, Fei Li, W. Shen, Z. Ning, Yu-guang Xie, K. Zhu
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引用次数: 1
Abstract
A beam detection system has been developed for tracks, position and energy calibration of electron, which consists of a TPC detector1, a PDD2, a detector to be calibrated and a silicon-based energy detector. Its data acquisition(DAQ) system aims to realize readout, event built, online monitoring and reconstructing for 511 channels of TPC and 200 channels of PDD in 100Hz trigger rate provided by the electron beam device. In our design, the DAQ system is a small scale distributed system, which has been divided into two parts. One part communicates with readout electronics, based on client-server architecture, we call it ROS(Readout System). The other part receives sub-event from ROSs, merges and processes event data in each DAQ component based on DAQ-Middleware software framework, we named it ODP(Online Data Processing). The two parts running independently, which improves the performance, scalability and maintainability of the whole system. This paper will present the system and software architecture design, implement of the DAQ software and evaluation of its ROS performance.
研制了一种用于电子轨迹、位置和能量标定的束流探测系统，该系统由TPC探测器1、PDD2、待标定探测器和硅基能量探测器组成。其数据采集(DAQ)系统旨在实现电子束器件提供的100Hz触发率下511路TPC和200路PDD的读出、事件构建、在线监测和重构。在我们的设计中，DAQ系统是一个小规模的分布式系统，分为两部分。其中一部分与读出电子器件通信，基于客户机-服务器架构，我们称之为ROS(读出系统)。另一部分是接收来自ROSs的子事件，并基于DAQ- middleware软件框架对各个DAQ组件中的事件数据进行合并和处理，我们将其命名为ODP(Online data Processing)。两部分独立运行，提高了整个系统的性能、可扩展性和可维护性。本文将介绍系统和软件的架构设计、DAQ软件的实现以及对其ROS性能的评价。
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