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Cheng C, Xie Y, Xia X, Gu J, Wang P, Xing L, Wang M, Hei D, Lei H, Wenbao J. Neutron collimator optimization for 14.1 MeV DT neutrons using Monte Carlo and Genetic algorithms. Appl Radiat Isot 2023; 198:110838. [PMID: 37182395 DOI: 10.1016/j.apradiso.2023.110838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 04/27/2023] [Accepted: 05/04/2023] [Indexed: 05/16/2023]
Abstract
The fast neutrons generated by Deuterium-Tritium (DT) fusion reaction have been widely applied in prompt gamma ray neutron activation analysis measurements. In this study, a multi-layer neutron collimator for DT neutron generator was developed. Genetic algorithm combined with Monte Carlo simulation was used to design a collimator made of iron, lead, graphite, and borated polyethene. Copper foil activations were conducted to determine the fast neutron flux ratios between the beam port and its nearby area and agreed well with those predicted by the simulations. The results demonstrated that a narrower beam was obtained. The fast neutron beam flux was 568 ± 14 s-1 cm-2. The neutron flux ratio of the collimator was improved by a factor of 2.36, which could provide a better neutron beam.
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Affiliation(s)
- Can Cheng
- Jiangsu Institute of Metrology, Nanjing, 210023, China; Institute of Nuclear Analytical Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China; Engineering Research Center of Nuclear Technology Application, Ministry of Education, East China University of Technology, Nanchang, 330013, China
| | - YongJi Xie
- China Nuclear Power Engineering Co., Ltd., Beijing, 100840, China
| | - Xunrong Xia
- Jiangsu Institute of Metrology, Nanjing, 210023, China.
| | - Jiayu Gu
- Jiangsu Institute of Metrology, Nanjing, 210023, China
| | - Peng Wang
- Jiangsu Institute of Metrology, Nanjing, 210023, China
| | - Liteng Xing
- Jiangsu Institute of Metrology, Nanjing, 210023, China
| | - Meiyi Wang
- Institute of Nuclear Analytical Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China
| | - Daqian Hei
- Institute of Nuclear Analytical Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China
| | - Haoyu Lei
- Nuclear Power Institute of China, Chengdu, 610041, China
| | - Jia Wenbao
- Institute of Nuclear Analytical Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China.
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Jiang SR, Shi GY, Chen SY, Jing SW, Liu C. Moderation device design for detecting hidden highly enriched uranium based on D-T neutron generator. ANN NUCL ENERGY 2023. [DOI: 10.1016/j.anucene.2022.109654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Sugihara K, Ikeda Y, Kobayashi T, Fujita K, Ikeda S, Shigyo N, Otake Y. Radiation field characterization with emphasis on the collimator configuration at the compact neutron source RANS-II facility. J NUCL SCI TECHNOL 2022. [DOI: 10.1080/00223131.2022.2088632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Kenta Sugihara
- Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, Fukuoka, Japan
- RIKEN Nishina Center, RIKEN, Saitama, Japan
| | - Yujiro Ikeda
- Neutron Beam Technology Team, RIKEN Center for Advanced Photonics, RIKEN, Saitama, Japan
- J-PARC Center, Japan Atomic Energy Agency, Ibaraki, Japan
| | - Tomohiro Kobayashi
- Neutron Beam Technology Team, RIKEN Center for Advanced Photonics, RIKEN, Saitama, Japan
| | - Kunihiro Fujita
- Neutron Beam Technology Team, RIKEN Center for Advanced Photonics, RIKEN, Saitama, Japan
| | - Shota Ikeda
- Neutron Beam Technology Team, RIKEN Center for Advanced Photonics, RIKEN, Saitama, Japan
| | - Nobuhiro Shigyo
- Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, Fukuoka, Japan
| | - Yoshie Otake
- Neutron Beam Technology Team, RIKEN Center for Advanced Photonics, RIKEN, Saitama, Japan
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