CORE SIM+ simulations of COLIBRI fuel rods oscillation experiments and comparison with measurements

Antonios Mylonakis; Christophe Demaziere; Paolo Vinai; Vincent Lamirand; Aldolfo Rais; Oskari Pakari; Pavel Frajtag; Daniel Godat; Mathieu Hursin; Gregory Perret; Axel Laureau; Carlo Fiorina; Andreas Pautz

CORE SIM+ simulations of COLIBRI fuel rods oscillation experiments and comparison with measurements
Paper i proceeding, 2020

At EPFL, the CROCUS reactor has been used to carry out experiments with vibrating fuel rods. The paper presents a first attempt to employ the measured data to validate CORE SIM+, a neutron noise solver developed at Chalmers University of Technology. For this purpose, the original experimental data are processed in order to extract the necessary information. In particular, detector recordings are scrutinized and detrended, and used to estimate CPSDs of detector pairs. These values are then compared with the ones derived from the CORE SIM+ simulations of the experiments. The main trend of the experimental data along with the values for some detectors are successfully reproduced by CORE SIM+. Further work is necessary on both the experimental and computational sides in order to improve the validation process.

fuel rod vibration

research reactor

Neutron noise

code validation

Författare

Antonios Mylonakis

Chalmers, Fysik, Subatomär, högenergi- och plasmafysik

Forskning Andra publikationer

Christophe Demaziere

Chalmers, Fysik, Subatomär, högenergi- och plasmafysik

Forskning Andra publikationer