A new propagation analysis of statistical uncertainty in multi-group cross sections generated by Monte Carlo method
- Title
- A new propagation analysis of statistical uncertainty in multi-group cross sections generated by Monte Carlo method
- Author
- 김종경
- Keywords
- Monte Carlo method; Multi-group cross section; Uncertainty propagation; Statistical uncertainty
- Issue Date
- 2018-10
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Citation
- ANNALS OF NUCLEAR ENERGY, v. 120, page. 477-484
- Abstract
- There are many studies on the Monte Carlo method to generate multi-group cross sections. However, there are not enough studies about the propagation of statistical uncertainty in multi-group cross sections. The purpose of this study is to generate Monte Carlo-based multi-group cross sections for the deterministic code and to evaluate the uncertainty of reactor physics parameters propagated from the statistical uncertainty in multi-group cross sections. To achieve this goal, new formulations for uncertainty propagations were developed. By applying the developed formulations, the propagated uncertainty of eigenvalue was quantified. The accuracy of the calculated uncertainty was validated by using the direct sampling method. Through this study, it is possible to accurately evaluate the uncertainty propagated from the statistical uncertainty in multi-group cross sections. This study can support the reliability of multi-group cross sections created by Monte Carlo method. In addition, the individual contribution of the statistical uncertainty of multi-group cross sections to the uncertainty of the eigenvalue can be calculated. It can provide the helpful information to produce accurate multi-group cross sections by Monte Carlo method. (C) 2018 Elsevier Ltd. All rights reserved.
- URI
- https://www.sciencedirect.com/science/article/pii/S0306454918303062?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/120369
- ISSN
- 0306-4549
- DOI
- https://www.sciencedirect.com/science/article/pii/S0306454918303062?via%3Dihub
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > NUCLEAR ENGINEERING(원자력공학과) > Articles
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