A Novel Source Convergence Acceleration Scheme for Monte Carlo Criticality Calculations, Part Ii: Implementation & Results

A novel technique for accelerating the convergence rate of the iterative power method for solving eigenvalue problems with the Monte Carlo method is presented in this paper. The new acceleration technique is based on a simple prescription for modifying the statistical importance of particles stored in the fission bank in order to bias the next generation source towards the fundamental mode solution. In effect, the new method is an analog to the well known fixedparameter extrapolation technique for the iterative power method, widely used in deterministic calculations. A simple and easy to implement algorithm for applying this new technique to Monte Carlo criticality calculations is presented, along with a brief analysis. A series of results from simple oneand two-dimensional test problems are also presented