Irradiation tests in BR2 of miniature fission chambers in pulse, Campbelling and current mode

Conference · Fri Jul 01 00:00:00 EDT 2011

DOI:https://doi.org/10.1109/ANIMMA.2011.6172885· OSTI ID:22039913

Vermeeren, L ^[1]; Geslot, B; Breaud, S; Filliatre, P; Jammes, C ^[2]; Legrand, A ^[3]; Barbot, L ^[2]

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1. SCK.CEN, Boeretang 200, B-2400 Mol (Belgium)
2. CEA/DEN/SPEx/LDCI, Centre de Cadarache, F-13109 Saint-Paul-lez-Durance (France)
3. CEA/DEN/DRSN/SIREN/LASPI Saclay, F-91191 Gif sur Yvette Cedex (France)

The FNDS system ('Fast Neutron Detection System') for the on-line in-pile detection of the fast neutron flux in the presence of a significant thermal neutron flux and a high gamma dose rate is being developed in the framework of the SCK.CEN-CEA Laboratoire Commun. The system has been patented in 2008. The system consists of a miniature Pu-242 fission chamber as main detector, complemented by a U-235 fission chamber or a rhodium Self-Powered Neutron Detector (SPND) for thermal neutron flux monitoring and a dedicated acquisition system that also takes care of the processing of the signals from both detectors to extract fast neutron flux data. This paper describes a FNDS qualification experiment in the SCK.CEN BR2 reactor, with experimental results on a large set of fission chambers in current and Campbelling mode. (authors)

• OSTI ID: 22039913
• Resource Relation: Conference: ANIMMA 2011: 2. International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and their Applications, Ghent (Belgium), 6-9 Jun 2011; Other Information: Country of input: France; 6 refs.; IEEE Catalog Number: CFP1124I-CDR
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
BR-2 REACTOR
CAMPBELLING CIRCUITS
CURRENTS
DOSE RATES
FAST NEUTRONS
FISSION CHAMBERS
IRRADIATION
NEUTRON DETECTION
NEUTRON FLUX
PLUTONIUM 242
PULSES
RHODIUM
SELF-POWERED NEUTRON DETECTORS
THERMAL NEUTRONS
URANIUM 235