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Study on the design and experimental verification of multilayer radiation shield against mixed neutrons and γ-rays

机译：多层中子和γ射线混合辐射防护屏的设计与实验验证研究

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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.
机译：传统的辐射屏蔽设计方法始终只关注屏蔽的结构或组件，而不是同时关注两者，这在很大程度上影响了设施的屏蔽性能，因此，本文提出了一种新颖的设计方法提出了同时屏蔽的结构和组成，以提高屏蔽能力。该方法是使用遗传算法（GA）和MCNP软件开发的。在研究中，将具有不同元素组合的六种类型的屏蔽材料（例如聚乙烯（PE），铅（Pb）和硼化合物）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。然后根据六个样品的实验结果选择两种典型材料，然后由紧凑型加速器中子源（CANS）设施进行验证。通过使用这种方法，可以快速达到最佳结果，并且由于设计过程是半自动的，因为大多数过程都是由计算机完成的，因此该方法节省了时间并提高了准确性。

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