Optimization approach of energy group structure for the Canadian pressure tube supercritical water reactor

Reactor physics calculations implement several approximations that aim to provide an accurate solution of the linear Boltzmann equation. One of these approximations is an energy discretization in which the neutron cross-sections are averaged over an energy interval and treated as an energy independent parameter within that interval. In order to simplify the full-core diffusion calculation, an additional energy group condensation is …