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Modeling noise expe...
Modeling noise experiments performed at AKR-2 and CROCUS zero-power reactors
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- Hursin, Mathieu (författare)
- Paul Scherrer Institut,Ecole Polytechnique Federale de Lausanne (EPFL),Swiss Federal Institute of Technology in Lausanne (EPFL)
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- Zoia, Andrea (författare)
- Université Paris-Saclay,University Paris-Saclay
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- Rouchon, Amélie (författare)
- Université Paris-Saclay,University Paris-Saclay
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- Brighenti, A. (författare)
- Université Paris-Saclay,University Paris-Saclay
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- Zmijarevic, I. (författare)
- Université Paris-Saclay,University Paris-Saclay
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- Santandrea, S. (författare)
- Université Paris-Saclay,University Paris-Saclay
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- Vinai, Paolo, 1975 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Mylonakis, Antonios, 1987 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Yi, Huaiqian, 1993 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Demaziere, Christophe, 1973 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Lamirand, Vincent (författare)
- Ecole Polytechnique Federale de Lausanne (EPFL),Swiss Federal Institute of Technology in Lausanne (EPFL),Paul Scherrer Institut
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- Ambrozic, K. (författare)
- Ecole Polytechnique Federale de Lausanne (EPFL),Swiss Federal Institute of Technology in Lausanne (EPFL)
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- Yamamoto, T. (författare)
- Kyoto University
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- Hübner, S. (författare)
- Technische Universität Dresden
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- Knospe, A. (författare)
- Technische Universität Dresden
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- Lange, Carsten (författare)
- Technische Universität Dresden
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- Yum, S. (författare)
- Technische Universität München (TUM),Technical University of Munich (TUM)
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- Macian, R. (författare)
- Technische Universität München (TUM),Technical University of Munich (TUM)
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- Vidal, A. (författare)
- Universitat Politecnica de Valencia (UPV),Polytechnic University of Valencia (UPV)
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- Ginestar, Damian (författare)
- Universitat Politecnica de Valencia (UPV),Polytechnic University of Valencia (UPV)
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- Verdu, Gumersindo (författare)
- Universitat Politecnica de Valencia (UPV),Polytechnic University of Valencia (UPV)
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(creator_code:org_t)
- 2023
- 2023
- Engelska.
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Ingår i: Annals of Nuclear Energy. - 0306-4549 .- 1873-2100. ; 194
- Relaterad länk:
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https://research.cha... (primary) (free)
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https://doi.org/10.1...
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https://research.cha...
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Abstract
Ämnesord
Stäng
- CORTEX is a EU H2020 project (2017-2021) devoted to the analysis of ’reactor neutron noise’ in nuclear reactors, i.e. the small fluctuations occurring around the stationary state due to external or internal disturbances in the core. One important aspect of CORTEX is the development of neutron noise simulation codes capable of modeling the spatial variations of the noise distribution in a reactor. In this paper we illustrate the validation activities concerning the comparison of the simulation results obtained by several noise simulation codes with respect to experimental data produced at the zero-power reactors AKR-2 (operated at TUD, Germany) and CROCUS (operated at EPFL, Switzerland). Both research reactors are modeled in the time and frequency domains, using transport or diffusion theory. Overall, the noise simulators managed to capture the main features of the neutron noise behavior observed in the experimental campaigns carried out in CROCUS and AKR-2, even though computational biases exist close to the region where the noise-inducing mechanical vibration was located (the so-called ”noise source”). In some of the experiments, it was possible to observe the spatial variation of the relative neutron noise, even relatively far from the noise source. This was achieved through reduced uncertainties using long measurements, the installation of numerous, robust and efficient detectors at a variety of positions in the near vicinity or inside the core, as well as new post-processing methods. For the numerical simulation tools, modeling the spatial variations of the neutron noise behavior in zero-power research reactors is an extremely challenging problem, because of the small magnitude of the noise field; and because deviations from a point-kinetics behavior are most visible in portions of the core that are especially difficult to be precisely represented by simulation codes, such as experimental channels. Nonetheless the limitations of the simulation tools reported in the paper were not an issue for the CORTEX project, as most of the computational biases are found close to the noise source.
Ämnesord
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Nyckelord
- Validation
- CORTEX
- Noise simulators
- Experimental data
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- art (ämneskategori)
- ref (ämneskategori)
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Till lärosätets databas
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Hursin, Mathieu
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Zoia, Andrea
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Rouchon, Amélie
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Brighenti, A.
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Zmijarevic, I.
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Santandrea, S.
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visa fler...
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Vinai, Paolo, 19 ...
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Mylonakis, Anton ...
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Yi, Huaiqian, 19 ...
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Demaziere, Chris ...
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Lamirand, Vincen ...
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Ambrozic, K.
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Yamamoto, T.
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Hübner, S.
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Knospe, A.
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Lange, Carsten
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Yum, S.
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Macian, R.
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Vidal, A.
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Ginestar, Damian
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Verdu, Gumersind ...
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- NATURVETENSKAP
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NATURVETENSKAP
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och Fysik
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och Annan fysik
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Annals of Nuclea ...
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Chalmers tekniska högskola