BESⅢ主漂移室模拟真实化调试研究

BESⅢ Main Drift Chamber Simulation Tuning Method Study

以BESⅢ上开发的主漂移室模拟软件为基础,仔细研究并建立了一套规范、有效的主漂移室模拟真实化调试方法。该方法基于对主漂移室响应机制以及真实数据中探测器工作状态的深入理解,建立恰当的参数化模型,通过调试丝击中效率及丝空间分辨,实现主漂移室模拟真实化。论文介绍了BESⅢ主漂移室模拟真实化调试的原理、利用真实数据进行调试的过程以及调试的性能表现。采用这套调试方法,通过调试丝击中效率和空间分辨可以获得恰当的探测器模拟输入参数,使模拟数据与真实数据径迹重建效率的差异达到1%的水平。

The tuning method for the BESIII Main Drift Chamber（MDC） simulation is built, based on the im plementation of tuning software. On the basis of folly understanding of the principle of drift chamber and the performance of MDC in real data, we can build proper parametric model in which wire efficiency and spatial resolution are tuned. The article describes the basic principles of MDC simulation tuning, tuning process by u sing real data and the performance of the method. Using this method, we can make the difference of track re construction efficiency between simulation and real data around 1%.