CORE SIM+ simulations of COLIBRI fuel rods oscillation experiments and comparison with measurements
Paper in proceedings, 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

Author

Antonios Mylonakis

Chalmers, Physics, Subatomic, High Energy and Plasma Physics

Christophe Demaziere

Chalmers, Physics, Subatomic, High Energy and Plasma Physics

Paolo Vinai

Chalmers, Physics, Subatomic, High Energy and Plasma Physics

Vincent Lamirand

Swiss Federal Institute of Technology in Lausanne (EPFL)

Paul Scherrer Institut

Aldolfo Rais

Swiss Federal Institute of Technology in Lausanne (EPFL)

Oskari Pakari

Swiss Federal Institute of Technology in Lausanne (EPFL)

Pavel Frajtag

Swiss Federal Institute of Technology in Lausanne (EPFL)

Daniel Godat

Swiss Federal Institute of Technology in Lausanne (EPFL)

Mathieu Hursin

Swiss Federal Institute of Technology in Lausanne (EPFL)

Paul Scherrer Institut

Gregory Perret

Paul Scherrer Institut

Axel Laureau

Swiss Federal Institute of Technology in Lausanne (EPFL)

Carlo Fiorina

Swiss Federal Institute of Technology in Lausanne (EPFL)

Andreas Pautz

Paul Scherrer Institut

Swiss Federal Institute of Technology in Lausanne (EPFL)

PHYSOR 2020: Transition to a Scalable Nuclear Future

1207

International conference on Physics of Reactors - PHYSOR 2020
Cambridge, United Kingdom,

Core monitoring techniques and experimental validation and demonstration (CORTEX)

European Commission (EC), 2017-09-01 -- 2021-08-31.

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Latest update

9/29/2020