基于DIANE的BESⅢ分布式离线数据处理

摘要

北京谱仪Ⅲ (BESⅢ)是北京正负电子对撞机Ⅱ(BEPCⅡ)上用于T-粲物理研究的大型通用磁谱仪.BESⅢ实验数据经过离线处理系统重建后才能用于物理分析.论文主要研究了BESⅢ分布式离线数据处理.基于DIANE软件,建立了一个分布式系统用于数据的事例级分布式处理.该系统在漂移室刻度的应用表明,性能能够满足BESⅢ实验的需求.%The Beijing Spectrometer III ( BESIII) is a general - purpose detector at Beijing Electron Positron Collider II (BEPCII) for the t - charm physics study. The experimental data can be used in physics analysis only after being reconstructed by the offline processing system. It mainly studies the distributed implementation of BESIII data processing. Based on DIANE software, a distributed system is established with the function of parallel processing at event level. The test with the calibration of BESIII drift chamber shows that its performance satisfies the requirements of the BESIII experiment.