A method to optimize the shield compact and lightweight combining the structure with components together by genetic algorithm and MCNP code

Yao Cai; Huasi Hu; Ziheng Pan; Guang Hu; Tao Zhang

doi:10.1016/j.apradiso.2018.05.009

A method to optimize the shield compact and lightweight combining the structure with components together by genetic algorithm and MCNP code

Appl Radiat Isot. 2018 Sep:139:169-174. doi: 10.1016/j.apradiso.2018.05.009. Epub 2018 May 17.

Authors

Yao Cai¹, Huasi Hu², Ziheng Pan¹, Guang Hu¹, Tao Zhang¹

Affiliations

¹ School of Nuclear Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China.
² School of Nuclear Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China. Electronic address: huasi_hu@mail.xjtu.edu.cn.

PMID: 29778764
DOI: 10.1016/j.apradiso.2018.05.009

Abstract

To optimize the shield for neutrons and gamma rays compact and lightweight, a method combining the structure and components together was established employing genetic algorithms and MCNP code. As a typical case, the fission energy spectrum of ²³⁵U which mixed neutrons and gamma rays was adopted in this study. Six types of materials were presented and optimized by the method. Spherical geometry was adopted in the optimization after checking the geometry effect. Simulations have made to verify the reliability of the optimization method and the efficiency of the optimized materials. To compare the materials visually and conveniently, the volume and weight needed to build a shield are employed. The results showed that, the composite multilayer material has the best performance.

Keywords: Compact; Gamma; Lightweight; Neutron; Optimization; Shield.