Uncertainty and similarity analysis between simplified models of CANDU-6 and TCR reactors using TSUNAMI

The TSUNAMI code, a component of the SCALE package was employed to perform a sensitivity and uncertainty (S/U) analysis of simplified full-core models of a CANDU-6 reactor (CANada Deuterium Uranium, henceforth referred to as C6) and a proposed Thorium based CANDU Reactor (TCR). The code utilizes an adjoint-based first-order linear perturbation theory to generate sensitivity coefficients for the k-effective value(k) and other reactivity coefficients with respect to nuclear data. The coupling of these sensitivity data with the underlying nuclear covariance data yields uncertainties in k_eff or reactivity coefficients due to uncertainties in the nuclear data.