A Set of Critical Loading Configurations of the IPEN/MB‐01 Reactor

A new set of critical loading configurations has been performed at the IPEN/MB‐01 research reactor facility. The configurations were submitted to ICSBEP and have been approved for publication in the coming September edition, 2004. The final keff uncertainty is judged to be 100 pcm for all configurations and suitable for a benchmark experiment. The keff results using the currently released nuclear data libraries ENDF/B‐VI.8 and JEF3.0 are in very good agreement with the experimental values. JENDL3.3 overestimates keff by around 200 pcm.