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Étude du potentiel de la détection des antineutrinos pour la surveillance des réacteurs nucléaires à des fins de lutte contre la prolifération.

Sandrine Cormon 1
SUBATECH - Laboratoire SUBATECH Nantes
Abstract : The field of applied neutrino physics has shown new developments in the last decade. Indeed, the antineutrinos (ne) emitted by a nuclear power plant depend on the composition of the fuel : thus their detection could be exploited for determining the isotopic composition of the reactor fuel. The International Atomic Energy Agency (IAEA) has expressed its interest in the potentialities of this detection as a new safeguard tool and has created an Ad Hoc working group devoted to this study. Our aim is to determine on the one hand, the current sensitivity reached with the ne detection and on the other hand, the sensitivity required to be useful to the IAEA and then we deduce the required performances required for a cubic meter detector.We will first present the physics on which our feasibility study relies : the neutrinos, the b-decay of the fission products (FP) and their conversion into ne spectra. We will then present our simulation tools : we use a package called MCNP Utility for Reactor Evolution (MURE), initially developed by CNRS/IN2P3 labs to study Generation IV reactors. Thanks to MURE coupled with nuclear data bases, we build the ne spectra by summing the FP contributions. The method is the only one that allows the ne spectra calculations associated to future reactors : we will present the predicted spectra for various innovative fuels. We then calculate the emitted ne associated to various concepts of current and future nuclear reactors in order to determine the sensitivity of the ne probe to various diversion scenarios, taking neutronics into account. The reactor studied are CANadian DeUterium, Pebble Bed Reactor and Fast Breeder Reactor.
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Submitted on : Wednesday, May 22, 2013 - 8:11:07 PM
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  • HAL Id : tel-00825082, version 1


Sandrine Cormon. Étude du potentiel de la détection des antineutrinos pour la surveillance des réacteurs nucléaires à des fins de lutte contre la prolifération.. Physique Nucléaire Théorique [nucl-th]. Université de Nantes, 2012. Français. ⟨tel-00825082⟩



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