System for measuring fast neutron fluence for a nuclear reactor, associated installation, measurement method and computer program product

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United States of America Patent

PATENT NO 12111432
APP PUB NO 20230017787A1
SERIAL NO

17789545

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Abstract

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A measuring system includes a detector having an optical waveguide including a primary dopant capable of transmuting, by neutron capture, into a stable secondary dopant that is less neutron-absorbent than the primary dopant, a moderation layer suitable for slowing down fast neutrons, and an analysis device connected to the detector. The analysis device is configured to inject, into the waveguide, an interrogation wave having a wavelength corresponding to an absorption peak of the secondary dopant, detect a response wave emitted by the waveguide, calculate, from the detected response wave, a piece of information relating to a concentration of secondary dopant in the waveguide, and, based on the information relating to the calculated concentration of secondary dopant, determine a fluence of fast neutrons during a predetermined secondary period.

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Patent Owner(s)

Patent OwnerAddress
COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES25 RUE LEBLANC BAT LE PONANT 75015 PARIS 75015

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Coulon, Romain Montrouge, FR 7 18
Dumazert, Jonathan Ales, FR 1 0
Laffont, Guillaume Meudon, FR 12 17
Magne, Sylvain Chatillon, FR 12 279

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