中文摘要：

时间投影室（Time Projection Chamber,TPC）是在多丝正比室（Multi Wire Proportional Chamber,MWPC）和多丝漂移室（Multi Wire Drift Chamber,MWDC）的基础上发展起来的一种高空间分辨粒子径迹探测器。因其具有很高的位置分辨能力，从而可以获得很好的动量分辨率。在开展兰州重离子储存环外靶实验终端CEE（Cooler-Storage-Ring External-target Experiment）-TPC的建造之前，估算CEE-TPC的动量分辨能力是一项很有必要的工作。基于Geant4和Kalman Filter等模拟程序，对时间投影室探测器测量带电粒子的整个过程进行了蒙特卡罗模拟，给出了CEE-TPC探测不同种类的带电粒子的动量分辨率，并且对影响探测器动量分辨率的因素进行了分析。通过模拟计算，得到了CEE-TPC对π介子、质子和氘核的典型动量分辨率在5％左右，能够较好地鉴别这三种粒子，为未来CEE-TPC的建造提供了可供参考的技术参数。

英文摘要：

Background： Time Projection Chamber （TPC） is a kind of high resolution gas detectors developed on the basis of Multi Wire Proportional Chamber （MWPC） and Multi Wire Drift Chamber （MWDC）. TPC has an excellent position resolution that can achieve high momentum resolution. Prior to the CEE （Cooler-Storage-Ring （CSR） External-target Experiment）-TPC construction at Heavy Ion Research Facility in Lanzhou （HIRFL）, it is necessary to simulate and estimate the performance of this detector. Purpose： This study aims to estimate the momentum resolution of the TPC via a simulation according to designed parameters. Methods： A series of simulation codes including Geant4, Kalman Filter and other programs were applied to the evaluation of momentum resolution for CEE-TPC using corresponding parameters. Three particles, i.e., π meson, proton and deuteron, were used for simulation study and other influence factors on momentum resolution were analyzed. Results： It is found that the typical momentum resolution of these three particles is about 5%. Conclusion： According to the simulation results, CEE-TPC can meet the requirements in the heavy ion collisions experiment at CSR to identify three typical particles,i.e., π meson, proton and deuteron. It can provide referable technical parameters for the construction of the future CEE-TPC.