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Testing the multigroup, group and subgroup options of the CONSYST / ABBN-RF system on criticality calculations of fast reactor models with MNUP fuel

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dc.contributor.authorTernovykh, M. Y.
dc.contributor.authorBogdanova, E. V.
dc.contributor.authorТерновых, Михаил Юрьевич
dc.contributor.authorБогданова, Екатерина Владимировна
dc.date.accessioned2024-11-27T12:38:46Z
dc.date.available2024-11-27T12:38:46Z
dc.date.issued2020
dc.description.abstract© Published under licence by IOP Publishing Ltd.The unified code CONSYST-2020 for neutron constants preparation and the ABBN-RF-2020 neutron data library are being testing as part of the new generation codes development for neutronic calculations of fast reactors with mixed nitride uranium-plutonium fuel (MNUP). Testing was carried out on prototype models of fast reactors with MNUP fuel. The errors of the multigroup, group and subgroup approximation are analyzed in comparison with the calculations performed using point-wise cross-sections libraries. The results obtained with point-wise cross-sections libraries are accepted in the final cross-verification as reference results. An assessment was made of the influence of approximations associated with averaging and preparing group cross-sections, and methodological errors determined by the selected spatial and angular computational grids. It was shown that the transition to the direct use of 299-group blocked constants reduces the error to 0.1 - 0.2%. The assessment of the efficiency of using the subgroup approximation shows the possibility of reducing the constant component of the error below 0.05%.
dc.identifier.citationTernovykh, M. Y. Testing the multigroup, group and subgroup options of the CONSYST / ABBN-RF system on criticality calculations of fast reactor models with MNUP fuel / Ternovykh, M.Y., Bogdanova, E.V. // Journal of Physics: Conference Series. - 2020. - 1689. - № 1. - 10.1088/1742-6596/1689/1/012059
dc.identifier.doi10.1088/1742-6596/1689/1/012059
dc.identifier.urihttps://www.doi.org/10.1088/1742-6596/1689/1/012059
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85097980548&origin=resultslist
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/22818
dc.relation.ispartofJournal of Physics: Conference Series
dc.titleTesting the multigroup, group and subgroup options of the CONSYST / ABBN-RF system on criticality calculations of fast reactor models with MNUP fuel
dc.typeConference Paper
dspace.entity.typePublication
oaire.citation.issue1
oaire.citation.volume1689
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