LAPSE:2023.35050
Published Article
LAPSE:2023.35050
The Influence Mechanism of Neutron Kinetics of the Accelerator-Driven Subcritical Reactor Based on the Fast/Thermal Neutron Spectra by Monte Carlo Homogenization Method
Nianbiao Deng, Chao Xie, Cheng Hou, Zhulun Li, Jinsen Xie, Tao Yu
April 28, 2023
For the sake of understanding the mechanism of deep subcriticality and high heterogeneity of neutron fluence rate in time−space on the neutron kinetics of the Accelerator-driven Subcritical Reactor Subcritical Reactor (ADSR) under varied beam transients and neutron spectra. A Monte Carlo homogenization approach for the neutron time−space kinetics of the ADSR is proposed in this study, and the influence mechanism on the kinetic parameters of the ADSR under varied neutron spectra, subcriticality, and beam transients is examined. The results show that the Monte Carlo homogenization for the α eigenvalue mode is more adaptable to the subcriticality characteristics under varied subcriticality; under beam transients, the relative differences in the kinetic parameters of the different modes of the ADSR with fast/thermal spectra increase with the depth of subcriticality, and the differences in neutron generation time for varied modes are larger than those of effective fraction of delayed neutron. Thus, it is recommended to use a more adaptable Monte Carlo homogenization method for the time−space kinetics of ADSR, and the effects of the high heterogeneity of neutron fluence rate and deep subcriticality in time−space on the neutron generation time should be considered.
Keywords
ADS Subcritical Reactor, deep subcriticality, heterogeneity of neutron fluence rate in time–space, Monte Carlo homogenization method, neutron kinetics
Suggested Citation
Deng N, Xie C, Hou C, Li Z, Xie J, Yu T. The Influence Mechanism of Neutron Kinetics of the Accelerator-Driven Subcritical Reactor Based on the Fast/Thermal Neutron Spectra by Monte Carlo Homogenization Method. (2023). LAPSE:2023.35050
Author Affiliations
Deng N: School of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, China [ORCID]
Xie C: School of Nuclear Science and Technology, University of South China, Hengyang 421001, China
Hou C: China Institute of Atomic Energy, Beijing 102413, China
Li Z: School of Nuclear Science and Engineering, North China Electric Power University, Beijing 102206, China [ORCID]
Xie J: School of Nuclear Science and Technology, University of South China, Hengyang 421001, China
Yu T: School of Nuclear Science and Technology, University of South China, Hengyang 421001, China
Journal Name
Energies
Volume
16
Issue
8
First Page
3545
Year
2023
Publication Date
2023-04-19
ISSN
1996-1073
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PII: en16083545, Publication Type: Journal Article
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