| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5474938 | Annals of Nuclear Energy | 2017 | 13 Pages |
Abstract
Uncertainties of the VHTRC multiplication factors due to uncertainties in nuclear data are determined with SAMPLER/KENO-VI of SCALE 6.2 and with continuous-energy TSUNAMI of SCALE 6.2. For all experimental configurations, the obtained uncertainty is found to be 0.58% when using ENDF/B-VII.0 data. The top contributor to this uncertainty is the average number of neutrons per fission event of U-235. With ENDF/B-VII.1 data, uncertainties of about 0.66% are obtained in particular due to an increased uncertainty of U-235 nu-bar in the latest ENDF release. When considering these nuclear data uncertainties, the obtained 1Ï uncertainty intervals are overlapping with the experimental error bars.
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Authors
Friederike Bostelmann, Gerhard Strydom,