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Uncertainty analysis of Lead cross sections on reactor safety for ELECTRA
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics. (Nuclear Research Group)
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics. (Nuclear Reactions Group)
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics. (Nuclear Reactions Group)
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics. (Nuclear Reactions Group)
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2013 (English)In: Joint International Conference on Supercomputing in Nuclear Applications + Monte Carlo, Paris, October 27-31, 2013., 2013Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

The Total Monte Carlo (TMC) method was used in this study to assess the impact of Pb-206, 207 and 208 nucleardata uncertainties on k-eff , beta-eff, coolant temperature coefficient, the coolant void worth for the ELECTRA reactor. Relatively large uncertainties were observed in the k-eff and the coolant void worth for all the isotopes with significant contribution coming from Pb-208 nuclear data. The large Pb-208 nuclear data uncertainty observed was further investigated by studying the impact of partial channels on the k-eff and beta-eff. Various sections of ENDF file: elasticscattering (n,el), inelastic scattering (n,inl), neutron capture (n,gamma), (n,2n), resonance parameters and the angular distribution were varied randomly and distributions in k-eff and beta-eff obtained. The dominant contributions to the uncertainty in the k-eff from Pb-208 came from uncertainties in the resonance parameters; however, elastic scattering cross section and the angular distribution also had significant impact. The impact of nuclear data uncertainties on the beta-eff was observed to be small.

Place, publisher, year, edition, pages
2013.
Keyword [en]
TMC, nuclear data uncertainty, lead isotopes, safety parameters, ELECTRA, fuel cycle
National Category
Other Physics Topics
Research subject
Applied Nuclear Physics
Identifiers
URN: urn:nbn:se:uu:diva-208843OAI: oai:DiVA.org:uu-208843DiVA: diva2:654883
Conference
Joint International Conference on Supercomputing in Nuclear Applications + Monte Carlo (SNA & MC 2013); 27-31 October 2013; Paris, France
Projects
GENIUS project
Available from: 2013-10-09 Created: 2013-10-09 Last updated: 2017-01-25Bibliographically approved

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Alhassan, ErwinSjöstrand, HenrikGustavsson, CeciliaPomp, StephanÖsterlund, MichaelKoning, Arjan J.

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