WHOLE-CORE VALIDATION OF THE SUPERPHENIX REACTOR USING WIMS11 AND AN INVESTIGATION INTO A HYBRID RZ-HEX SP3 CALCULATION ROUTE

摘要

The Superphénix SFR has been modelled using the new MERLIN flux solver moduleof the WIMS reactor physics code. The reactor was simulated for a range of calculationcases which investigated the neutronic effects of different temperatures and controlrod insertions, for the purposes of validation against experimental data and verificationagainst a Serpent benchmark. The WIMS results were found to be in good agreementwith the experimental data and the Serpent results. Two different MERLIN models wereconstructed: a detailed hexagonal-Z geometry in 172 groups, and a hybrid method whichused a simplified RZ model to condense the data used in the calculation into fewer groupsbefore using the full hexagonal-Z geometry. This hybrid method was found to decreasethe time taken for the calculations by a factor of five while retaining a good level ofaccuracy.