RCD仪器屏蔽体蒙特卡洛模拟分析

Monte-Carlo simulation analysis of RCD shield

蒙特卡罗软件在粒子输运相关研究中有广泛应用。文章通过MCNP软件,对伽玛射线在不同厚度,不同材料屏蔽体下屏蔽效果进行了模拟。通过得到的计数率变化曲线来选择屏蔽体,确定屏蔽厚度,模拟实验过程得出模拟结果,在实验开展受限制的前提下,采用蒙特卡罗方法模拟研究伽马射线屏蔽性能问题或粒子输运问题的可行性。探讨屏蔽材料和屏蔽结构的优化对测量结果的影响,使得实际测试结果更加准确可靠。

Monte Carlo software is widely used in the research of particle transport.In this paper,through MCNP software,the shielding effect of gamma ray under different thickness and different material shielding body is simulated.Through the obtained curve of counting rate,the shielding body is selected and the shielding thickness is determined.The simulation results are obtained in the process of simulation experiment.On the premise of limited experiment,Monte Carlo method is used to study the feasibility of gamma ray shielding performance or particle transport.The influence of the optimization of shielding material and shielding structure on the measurement results is discussed,which makes the actual test results more accurate and reliable.