Nuclear data adjustment based on the interpretation of post-irradiation experiments with the DARWIN2.3 package

DARWIN2.3 is the French reference package dedicated to fuel cycle applications, computing fuel inventory as well as decay heat, neutron emissions, α, β and γ spectra. The DARWIN2.3 package fuel inventory calculation was experimentally validated with Post-Irradiation Experiments (PIEs), mainly consis...

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Bibliographic Details
Published in:EPJ nuclear sciences & technologies 2018-01, Vol.4, p.47
Main Authors: Rizzo, Axel, Vaglio-Gaudard, Claire, Noguere, Gilles, Martin, Julie-Fiona, Vallet, Vanessa, Eschbach, Romain
Format: Article
Language:English
Subjects:
Cesium 137
Cesium isotopes
Codes
Data assimilation
Fuel cycles
Irradiation
Normal distribution
Nuclear fuels
Physics
Pies
Social exclusion
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Summary:DARWIN2.3 is the French reference package dedicated to fuel cycle applications, computing fuel inventory as well as decay heat, neutron emissions, α, β and γ spectra. The DARWIN2.3 package fuel inventory calculation was experimentally validated with Post-Irradiation Experiments (PIEs), mainly consisting in irradiated fuel pellets analysis. This paper presents a method to assimilate these integral trends for improving nuclear data. In this study, the method is applied to 137 Cs/ 238 U concentration ratio. Results suggest an increase of the JEFF-3.1.1 235 U cumulated thermal fission yield in 137 Cs by (+3.8 ± 2.1)%, from 6.221E-02 to 6.460E-02 ± 2.1%.
ISSN:2491-9292
2491-9292
DOI:10.1051/epjn/2018033