Neutron physical calculation of reactor core with a fast neutron spectrum using software pack GESSAPFIR-RF and DESNA-9

Authors: Semishin V.V., Stolotnyuk Yа.D., Akhmetova P.V., Izotov A.S.
Published in issue: #4(99)/2025
DOI:
Category: Power, Metallurgic and Chemical Engineering | Chapter: Nuclear power plant
Keywords: neutron-physical calculation, fast neutron reactor, SAPFIR_95, SAPFIR_RF, DESNA-9, core
Published: 28.08.2025

This paper presents the results of the development of a neutron-physicalmodel of the core of fast neutron reactor with sodium cooling. The description of the software tools used is given: SAPFIR-RF for calculating the 8-grouplibrary of neutron-physical cross sections, DESNA-9for three-dimensional coup led neutron-thermohydraulic calculation of the core. The developed model consists of core region, radial and end breeding zone sand radial and end neutron reflectors. The results of modeling of one fuel campaign are presented and the correctness of the results obtained is shown based on comparison with the duration of the fuel campaign of existing fast neutron reactors

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