Cryogenic moderator simulations : confronting reality

摘要

The Intense Pulsed Neutron Source (IPNS) at Argonne National Laboratory is a spallation neutron source dedicated to materials research. Its three cryogenic methane moderators provide twelve neutron beams to fourteen instruments and test facilities. This report concerns ongoing activities for benchmarking our Monte Carlo model of the IPNS neutron generation syste. This paper concentrates on the techniques (both experimental and calculational) used in such benchmarking activities.