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On the use of neutr...
On the use of neutron flux gradient with ANNs for the detection of diverted spent nuclear fuel
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- al-Dbissi, Moad, 1994 (författare)
- Belgian Nuclear Research Center (SCK CEN),Chalmers tekniska högskola,Chalmers University of Technology
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- Pazsit, Imre, 1948 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Rossa, Riccardo (författare)
- Belgian Nuclear Research Center (SCK CEN)
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- Borella, Alessandro (författare)
- Belgian Nuclear Research Center (SCK CEN)
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- Vinai, Paolo, 1975 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2024
- 2024
- Engelska.
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Ingår i: Annals of Nuclear Energy. - 0306-4549 .- 1873-2100. ; 204
- Relaterad länk:
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https://research.cha... (primary) (free)
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- One of the main tasks in nuclear safeguards is regular inspections of Spent Nuclear Fuel (SNF) assemblies to detect possible diversions of special nuclear material such as 235U and 239Pu. In these inspections, characteristic signatures of SNF such as emissions of neutrons and gamma rays from the radioactive decay, are measured and their consistency with the declared assemblies is verified to ensure that no fuel pins have been removed. Research in this field is focused on both the development of detection equipment and methods for the analysis of the acquired measurement data. In this paper, the use of the neutron flux gradient, which is not considered in regular SNF verification, is investigated in combination with the scalar neutron flux as input to artificial neural network models for the quantification of fuel pins in SNF assemblies. The training and testing of these ANN models rely on a synthetic dataset that is generated from Monte Carlo simulations of a typical intact pressurized water reactor assembly and with different patterns of fuel pins replaced by dummy pins. The dataset consists of unique scenarios so that the ANN can be assessed over “unknown” cases that are not part of the learning phase. Results show that the neutron flux gradient is advantageous for a more accurate reconstruction of diversions within SNF assemblies.
Ämnesord
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Nyckelord
- Artificial neural networks
- Nuclear safeguards
- Monte Carlo
- Spent nuclear fuel
- Neutron flux gradient
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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