介绍使用面向对象技术和C++语言开发的BESⅢ主漂移室径迹重建软件包MdcPatRec。它的主要任务是对主漂移室内带电径迹进行寻找,并精确地重建其动量和位置。本文将详细介绍重建软件包的设计和实现,并利用模拟数据给出重建软件的主要物理和系统性能。
The tracking algorithm for the BES Ⅲ Main Drift Chamber, MdcPatRec, is implemented using object-oriented techniques and C++ language. The tracking algorithm is used to find the charged particle's track in the drift chamber and to reconstruct its momentum and position. After description of implementation details, physics and system performances are presented with Monte Carlo simulated data.