Superphénix Benchmark Part I: Results of Static Neutronics

Abstract In the paper, specification of a new neutronics benchmark for large sodium cooled fast reactor (SFR) core and results modeling by different participants are presented. The describes French Superphénix at its startup configuration, which in particular was used experimental measurement reactivity characteristics. consists detailed heterogeneous neutronic analysis reference solution. Different geometries thermal conditions from cold “as fabricated” up to full power were considered. Monte Carlo (MC) solution serpent 2 includes data on multiplication factor, distribution, axial radial reaction rates coefficients safety characteristics, control rods worth, kinetic data. with seven other solutions using deterministic MC methods also presented compared comparisons demonstrate appropriate agreement evaluated will be second phase evaluation transient behavior core.