Optimised Adjoint Sensitivity Analysis Using Adjoint Guided Mesh Adaptivity Applied to Neutron Detector Response Calculations

This article presents a new approach for the efficient calculation of sensitivities in radiation dose estimates, subject to imprecisely known nuclear material cross-section data. The method is combined application adjoint-based models perform, simultaneously, both sensitivity together with optimal adaptive mesh refinement. Adjoint-based methods are their efficiency since they enable all parameters be formed through only two solutions problem. However, can also obtained by computation on meshes, here guided goal-based adjoint approaches. It shown that adaptivity and computed same solution, meaning performed without additional costs. A simple demonstration presented based Maynard fixed-source problem where uncertainties, respect cross-sections, doses received local regions examined. able calculate reduced computational costs terms memory potentially time size when using resolution comparison uniform resolution. In particular, it spatial contributions resolved more effectively due meshes concentrating those areas contributing most its value.