利用GEANT4模拟研究RIBLL中的飞行时间探测器

A Simulation Study of the Time of Flight Detector in RIBLL with GEANT4

基于GEANT4对兰州放射性束流线(RIBLL)中的飞行时间探测器进行了系统的模拟研究,得到了入射粒子在不同入射位置情况下光子总的收集效率、光子到达光阴极3种情况的收集效率和时间分辨,给出了影响探测器时间分辨的主要因素和改进方案.

Based on GEANT4, the authors have systematically simulated the time detector in Radioactive Ion Beam Line in Lanzhou（RIBLL）. The photon total collection efficiency, photon collection efficiency and time resolution under 3 cases arriving at photocathode, following the incident particles at different position, were obtained. The main factors, which can affect the detector＇s performance, were given and some improve schemes were proposed.