CEA-JSI Experimental Benchmark for validation of the modeling of neutron and gamma-ray detection instrumentation used in the JSI TRIGA reactor

Constant improvements of the computational power and methods as well demands accurate reliable measurements for reactor operation safety require a continuous upgrade instrumentation. In particular, nuclear sensors used in fission reactors (research or reactors) fusion facilities are operated under intense mixed neutron gamma-ray fields, need to be calibrated modeled provide selective measurements. The French Atomic Energy Alternative Energies Commission (CEA) Jožef Stefan Institute (JSI) have started an experimental program dedicated detailed benchmark with analysis using Monte Carlo particle transport calculations series sensor types JSI TRIGA Mark II reactor. CEA has setup simplified TRIPOLI-4® modeling scheme based on information available IRPhEP order facilitate future These allow perform TRIPOLI-4 instrumentation calculation benchmarked MCNP model. This paper presents main results this application their comparison obtained 2012 MCNP5 & ENDF/B-VII.0 scheme. will conclude some about new carried out 2022 core.