一、引言 漂移室是高能物理实验中最通用的探测器之一,并在原子核物理、宇宙线、核医学、X射线晶体学等领域有着广泛的应用。漂移室的工作原理是基于电子在电场中的漂移,通过测量漂移时间确定入射粒子的空间位置。因此,计算漂移单元的电场结构对漂移室的设计及性能研究有着重要的意义。 I. Introduction Drift chamber is one of the most common detectors in high-energy physics experiments and has been widely used in nuclear physics, cosmic ray, nuclear medicine, X-ray crystallography and other fields. The working principle of the drift chamber is based on the drift of the electrons in the electric field and the spatial position of the incident particles is determined by measuring the drift time. Therefore, calculating the electric field structure of the drift cell is of great significance for the design and performance of the drift chamber.