Strong Radiation Driven Shocks in Cassio

In this paper we present results of a sensitivity study for strong shocks in the HED code Cassio. Cassio is an Eularian radiation-hydrodynamics code being developed at Los Alamos to study HED physics. The radiation transport cna be eitehr grey diffusion, multi-group diffusion or IMC. The materials models include three-temperature radiation, electron and ions and wither analytic of tabular EOS. We examine the behavior of strong shocks and explore not only the hydrodynamic convergence behavior but also the effect of other physics modeling choices on shock evolution.