Monte Carlo simulation of a reactor-based neutron strain scanning diffractometer

A Monte Carlo code for the simulation of neutron strain scanning experiment s on a reactor-based two-axis diffractometer is described. In order to vali date this code, several experiments have been performed. A comparison is ma de between experimental and simulated results for instrumental resolution, primary beam divergence and wavelength distribution in the incident neutron beam. Finally, the application of the simulation results to the analysis o f a real neutron strain scanning experiment is outlined.