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

Neutron noise

research reactor

code validation

Author

Antonios Mylonakis

Subatomic, High Energy and Plasma Physics

Christophe Demaziere

Subatomic, High Energy and Plasma Physics

Paolo Vinai

Subatomic, High Energy and Plasma Physics

Vincent Lamirand

Paul Scherrer Institut

EPFL

Aldolfo Rais

EPFL

Oskari Pakari

EPFL

Pavel Frajtag

EPFL

Daniel Godat

EPFL

Mathieu Hursin

EPFL

Paul Scherrer Institut

Gregory Perret

Paul Scherrer Institut

Axel Laureau

EPFL

Carlo Fiorina

EPFL

Andreas Pautz

EPFL

Paul Scherrer Institut

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 (Horizon 2020), 2017-09-01 -- 2021-08-31.

Subject Categories

Other Engineering and Technologies

Other Natural Sciences

Areas of Advance

Energy

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Latest update

7/17/2020