The Influence Mechanism of Neutron Kinetics of the Accelerator-Driven Subcritical Reactor Based on the Fast/Thermal Neutron Spectra by Monte Carlo Homogenization Method
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 homogenizat...
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MDPI AG
2023-04-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/16/8/3545 |
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| author | Nianbiao Deng Chao Xie Cheng Hou Zhulun Li Jinsen Xie Tao Yu |
| author_facet | Nianbiao Deng Chao Xie Cheng Hou Zhulun Li Jinsen Xie Tao Yu |
| author_sort | Nianbiao Deng |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-11T05:03:01Z |
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| id | doaj.art-54f6195a9fc245ada0a2fc5a2844db92 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-11T05:03:01Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-54f6195a9fc245ada0a2fc5a2844db922023-11-17T19:06:43ZengMDPI AGEnergies1996-10732023-04-01168354510.3390/en16083545The Influence Mechanism of Neutron Kinetics of the Accelerator-Driven Subcritical Reactor Based on the Fast/Thermal Neutron Spectra by Monte Carlo Homogenization MethodNianbiao Deng0Chao Xie1Cheng Hou2Zhulun Li3Jinsen Xie4Tao Yu5School of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, ChinaSchool of Nuclear Science and Technology, University of South China, Hengyang 421001, ChinaChina Institute of Atomic Energy, Beijing 102413, ChinaSchool of Nuclear Science and Engineering, North China Electric Power University, Beijing 102206, ChinaSchool of Nuclear Science and Technology, University of South China, Hengyang 421001, ChinaSchool of Nuclear Science and Technology, University of South China, Hengyang 421001, ChinaFor 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.https://www.mdpi.com/1996-1073/16/8/3545Monte Carlo homogenization methodADS Subcritical Reactorneutron kineticsdeep subcriticalityheterogeneity of neutron fluence rate in time–space |
| spellingShingle | Nianbiao Deng Chao Xie Cheng Hou Zhulun Li Jinsen Xie Tao Yu The Influence Mechanism of Neutron Kinetics of the Accelerator-Driven Subcritical Reactor Based on the Fast/Thermal Neutron Spectra by Monte Carlo Homogenization Method Energies Monte Carlo homogenization method ADS Subcritical Reactor neutron kinetics deep subcriticality heterogeneity of neutron fluence rate in time–space |
| title | The Influence Mechanism of Neutron Kinetics of the Accelerator-Driven Subcritical Reactor Based on the Fast/Thermal Neutron Spectra by Monte Carlo Homogenization Method |
| title_full | The Influence Mechanism of Neutron Kinetics of the Accelerator-Driven Subcritical Reactor Based on the Fast/Thermal Neutron Spectra by Monte Carlo Homogenization Method |
| title_fullStr | The Influence Mechanism of Neutron Kinetics of the Accelerator-Driven Subcritical Reactor Based on the Fast/Thermal Neutron Spectra by Monte Carlo Homogenization Method |
| title_full_unstemmed | The Influence Mechanism of Neutron Kinetics of the Accelerator-Driven Subcritical Reactor Based on the Fast/Thermal Neutron Spectra by Monte Carlo Homogenization Method |
| title_short | The Influence Mechanism of Neutron Kinetics of the Accelerator-Driven Subcritical Reactor Based on the Fast/Thermal Neutron Spectra by Monte Carlo Homogenization Method |
| title_sort | influence mechanism of neutron kinetics of the accelerator driven subcritical reactor based on the fast thermal neutron spectra by monte carlo homogenization method |
| topic | Monte Carlo homogenization method ADS Subcritical Reactor neutron kinetics deep subcriticality heterogeneity of neutron fluence rate in time–space |
| url | https://www.mdpi.com/1996-1073/16/8/3545 |
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