Towards the validation of neutron noise simulators: Qualification of data acquisition systems
Paper i proceeding, 2019

This paper deals with the processes involved in the generation of reliable experimental data for the validation of computer simulations. In the field of neutron noise, the analysis of results is based on spectral features of the detector signals in the frequency domain. Neutron noise simulators also produce estimates that are subjected to studies in the same domain. The validation process of such simulations begins with the generation of reliable experimental data. In this work, we analyze results from two neutron noise experimental campaigns. The focus is placed upon de comparison of results obtained by different data acquisition systems (DAQs) that were used to record the data in parallel. The goal is to verify whether results obtained by the different DAQs are consistent, and thus reliable. The neutron noise-dedicated experiments were carried out in the AKR-2 reactor at the Technische Universität Dresden and in the CROCUS reactor at the École polytechnique fédérale de Lausanne. The experiments consisted in introducing different types of periodic reactivity perturbations: a rotating neutron absorber with a varying absorption crosssection with respect to the rotation angle; a linearly vibrating absorber that is moved back and forth inside the reactor core; and a fuel rods oscillator that allows to vibrate a set of fuel rods.

CORTEX

CROCUS reactor

AKR-2 reactor

neutron noise

Författare

Aldolfo Rais

Ecole Polytechnique Federale de Lausanne (EPFL)

Vincent Lamirand

Ecole Polytechnique Federale de Lausanne (EPFL)

Oskari Pakari

Ecole Polytechnique Federale de Lausanne (EPFL)

Axel Laureau

Ecole Polytechnique Federale de Lausanne (EPFL)

Joachim Pohlus

ISTec

ISTec

Christoph Pohl

TIS

Sebastian Hübner

Technische Universität Dresden

Mathieu Hursin

Ecole Polytechnique Federale de Lausanne (EPFL)

Christophe Demaziere

Chalmers, Fysik, Subatomär fysik och plasmafysik

Andreas Pautz

Ecole Polytechnique Federale de Lausanne (EPFL)

Int. Conf. Mathematics & Computational Methods Applied to Nuclear Science & Engineering (M&C 2019)

Int. Conf. Mathematics & Computational Methods Applied to Nuclear Science & Engineering (M&C 2019)
Portland, USA,

Core monitoring techniques and experimental validation and demonstration (CORTEX)

Europeiska kommissionen (EU), 2017-09-01 -- 2021-08-31.

Styrkeområden

Energi

Ämneskategorier

Annan fysik

ISBN

9780894487699

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Senast uppdaterat

2020-09-29