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A Nuclear Data Evaluation Pipeline for the Fast Neutron Energy Range – using heteroscedastic Gaussian processes to treat model defects.
- Source :
-
EPJ Web of Conferences . 4/17/2024, Vol. 294, p1-7. 7p. - Publication Year :
- 2024
-
Abstract
- In this paper, we discuss the development of a nuclear data evaluation pipeline, based around the TALYS code system. The pipeline focuses on the evaluation of the fast neutron energy range, above the resolved resonances. A strong focus in development lies on automation and reproducibility, as well as the efficient use of large-scale computational infrastructure, to enable rapid testing of new algorithms and modified assumptions. Several novel concepts for nuclear data evaluation methodology are implemented. A particular problem in evaluating the neutron-induced reaction cross-section using TALYS, relates to the intermediate energy range. While TALYS only predicts the smooth energy-averaged cross-section, experiments reveal unresolved resonance-like structures. In this paper, we explore ways to treat this type of model defect using heteroscedastic Gaussian processes to automatically determine the distribution of experimental data around an energy-averaged cross-section curve. [ABSTRACT FROM AUTHOR]
- Subjects :
- *NUCLEAR reactions
*NUCLEAR energy
*HETEROSCEDASTICITY
*GAUSSIAN processes
*NEUTRONS
Subjects
Details
- Language :
- English
- ISSN :
- 21016275
- Volume :
- 294
- Database :
- Academic Search Index
- Journal :
- EPJ Web of Conferences
- Publication Type :
- Conference
- Accession number :
- 176649791
- Full Text :
- https://doi.org/10.1051/epjconf/202429404005