International criticality benchmark comparison exercise in support of nuclear data validation

The objective of this paper is to present the main results of the k(eff) inter-comparison exercise performed in 2019-2022 by LANL, LLNL, ORNL and IRSN on a set of common benchmarks. The paper includes a description of the methodology to make the inter-comparison, presents the set of selected cases along with the main tendencies that could be at-tributed to nuclear data. In addition, it identities some issues on the processing and interpretation of nuclear data clone by the various codes of the intercomparison.