A Local Effect Correction Model for SMOKIN

Abstract

The efficacy of the modal expansion method used in the SMOKIN code depends on the accuracy of the corrections applied to the synthesized flux that are required to account for local perturbations that result from movement of reactivity devices (1,2,3). A method of calculation of the local effect correction, based on the separability of the global and lattice cell flux distributions has been developed and tested successfully. The method is applicable to all types of reactivity devices and in all geometries.