Study on the design and experimental verification of multilayer radiation shield against mixed neutrons and γ-rays
Study on the design and experimental verification of multilayer radiation shield against mixed neutrons and γ-rays
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混合中子和伽马射线多层辐射屏蔽设计与实验验证研究
DOI：
10.1016/j.net.2019.07.016
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发表时间：
2020-01-01
影响因子：
2.7
通讯作者：
Sun, Weiqiang
中科院分区：
文献类型：
--
作者：
Hu, Guang;Hu, Huasi;Sun, Weiqiang
传统的辐射屏蔽设计方法往往只考虑屏蔽体的结构或部件，而不是同时考虑屏蔽体的结构和部件，这在很大程度上影响了设施的屏蔽性能，为此提出了一种屏蔽体结构和部件同时设计的新方法，以提高屏蔽能力。该方法是利用遗传算法（GA）和MCNP软件。将聚乙烯（PE）、铅（Pb）和硼化合物等6种不同元素组合的屏蔽材料应用于辐射屏蔽设计，并对每种材料的性能进行了分析和比较。然后根据实验结果选择了两种典型材料，并在紧凑型加速器中子源（CANS）上进行了验证。该方法可快速得到优化结果，而且由于设计过程是半自动的，大部分过程都是由计算机完成的，因此节省了时间，提高了精度。(C)2019年韩国核学会，由Elsevier Korea LLC出版。
The traditional methods for radiation shield design always only focus on either the structure or the components of the shields rather than both of them at the same time, which largely affects the shielding performance of the facilities, so in this paper, a novel method for designing the structure and components of shields simultaneously is put forward to enhance the shielding ability. The method is developed by using the genetic algorithm (GA) and the MCNP software. In the research, six types of shielding materials with different combinations of elements such as polyethylene (PE), lead (Pb) and Boron compounds are applied to the radiation shield design, and the performance of each material is analyzed and compared. Then two typical materials are selected based on the experiment result of the six samples, which are later verified by the Compact Accelerator Neutron Source (CANS) facility. By using this method, the optimal result can be reached rapidly, and since the design progress is semi-automatic for most procedures are completed by computer, the method saves time and improves accuracy. (C) 2019 Korean Nuclear Society, Published by Elsevier Korea LLC.