GEANT程序在空间粒子探测器优化设计中的应用

在众多的蒙特卡罗模拟程序中，介绍了其中的一种程序——GEANT程序．首先对蒙特卡罗方法的产生和基本思想作了解释，对GEANT程序的主要模块和基本结构以及粒子在程序中的传输过程作了描述．在程序中，GEANT程序应用了先进的ZEBRA存储管理器，使各个模块之间的联系更为方便．在空间粒子探测中，利用GEANT程序，可以计算空间粒子在探测器中的能量损失，在不同材料中的射程以及产生的次级粒子的数量，最后利用GEANT程序可以模拟出各种粒子在不同材料中的LET值，本文还进一步表明了蒙特卡罗方法对空间粒子探测的重要意义．

Application of GEANT Program to Design Space Particle Detector and Optimize

GEANT is an important Monte Carlo program and this program is in principal applied in high energetic physics. As the scale and complexity of high energy physics experiments increase, simulation studies require more and more care and become essential to the design and optimizing of the detectors, development and test of the reconstruction and analysis of programs, also to in-terpreting the experimental data. It has been found today applications also outside this domain in areas such as medical and biological sciences, radio-protection. With the development of space technique, design of the particle detector is helped by the Monte Carlo simulation too. The principal applications of GEANT in space particle detection are: the transport of particles through a detector for the simulation of detector response; the graphical representation of the setup and of the particle trajectories. GEANT uses the memory manager ZEBRA, it can help us to manage and store the data easily. In this paper, the primary structure and the process of particle transferring in detector is introduced. With GEANT program, many problems in particle detections can be solved, such as the particle's energy deposition in detector, the linear energy transfer in matter.