Date:

2025-04-30

Title of Paper:

Optimization of radiation shielding material aiming at compactness, lightweight, and low activation for a vehicle-mounted accelerator-driven D-T neutron source

Journal:

Applied radiation and isotopes

Summary:

Abstract
To minimize the size and weight of a vehicle-mounted accelerator-driven D-T neutron source and protect workers from unnecessary irradiation after the equipment shutdown, a method to optimize radiation shielding material aiming at compactness, lightweight, and low activation for the fast neutrons was developed. The method employed genetic algorithm, combining MCNP and ORIGEN codes. A series of composite shielding material samples were obtained by the method step by step. The volume and weight needed to build a shield (assumed as a coaxial tapered cylinder) were adopted to compare the performance of the materials visually and conveniently. The results showed that the optimized materials have excellent performance in comparison with the conventional materials. The 'MCNP6-ACT' method and the 'rigorous two steps' (R2S) method were used to verify the activation grade of the shield irradiated by D-T neutrons. The types of radionuclide, the energy spectrum of corresponding decay gamma source, and the variation in decay gamma dose rate were also computed.

关键词
Compact | Lightweight | Low activation | Neutron | Optimization | Shielding  
作者机构
[Cai Yao;Jia Qinggang;Lu Shuangying;Hu Huasi;]China Ship Development and Design Center,Wuhan,China;
[Cai Yao;Jia Qinggang;Lu Shuangying;Hu Huasi;]Riken,Wako,Japan;
[Cai Yao;Jia Qinggang;Lu Shuangying;Hu Huasi;]Xi'an Jiaotong University,Xi'an,China;
[Cai, Yao; Hu, Huasi; Jia, Qinggang] Xi An Jiao Tong Univ, Sch Nucl Sci & Technol, Xian 710049, Shaanxi, Peoples R China
[Lu, Shuangying] China Ship Dev & Design Ctr, Wuhan 430064, Hubei, Peoples R China
[Jia, Qinggang] Riken Inst Phys & Chem Res, Neutron Beam Technol Team, Saitama 3510198, Japan

Applied radiation and isotopes: including data, instrumentation and methods for use in agriculture, industry and medicine

Electronic address: huasi_hu@mail.xjtu.edu.cn
DOI: 10.1016/j.apradiso.2018.01.021

Co-author:

Yao Cai, Huasi Hu, Shuangying Lu, Jia Qinggang

Volume:

135

Page Number:

147-154

Translation or Not:

No

Date of Publication:

2018-06-02