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Characterization and localization of partial-discharge-induced pulses in fission chambers designed for sodium-cooled fast reactors

Galli, Giacomo and Hamrita, Hassen and Jammes, Christian and Kirkpatrick, Michael J. and Odic, Emmanuel and Dessante, Philippe and Molinié, Philippe and Cantonnet, B. and Nappé, J.-C. Characterization and localization of partial-discharge-induced pulses in fission chambers designed for sodium-cooled fast reactors. (2018) IEEE Transactions on Nuclear Science, 65 (9). 2412-2420. ISSN 0018-9499

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Official URL: https://doi.org/10.1109/TNS.2018.2861566

Abstract

During the operation of the Superphenix and Phenix reactors, an aberrant electrical signal was detected from the fission chambers used for neutron flux monitoring. This signal, thought to be due to partial electrical discharge (PD) is similar to the signal resulting from neutron interactions, and is generated in fission chambers at temperatures above 400°C. This paper reports work on the characterization and localization of the source of this electrical signal in a High Temperature Fission Chamber (HTFC). The dependence of the shape of the PD or neutron signal on the various experimental parameters (nature and pressure of the chamber filling gas, electrode gap distance, and fission chamber geometry) are described. Next, experiments designed to identify the location within the chambers where the PD are being generated are presented in way to propose changes to the fission chamber in order to reduce or eliminate the PD signal.

Item Type:Article
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Commissariat à l'Energie Atomique et aux énergies alternatives - CEA (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Sorbonne Université (FRANCE)
Other partners > Université Paris-Saclay (FRANCE)
Other partners > Université Pierre et Marie Curie, Paris 6 - UPMC (FRANCE)
Other partners > CentraleSupélec (FRANCE)
Other partners > Photonis (FRANCE)
Laboratory name:
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Deposited On:21 May 2021 09:26

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