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Title: Combined analysis of neutron and photon flux measurements for the Jules Horowitz reactor core mapping

Abstract

We study the combined analysis of nuclear measurements to improve the knowledge of the irradiation conditions in the experimental locations of the future Jules Horowitz Reactor (JHR). The goal of the present work is to measure more accurately neutron flux, photon flux and nuclear heating in the reactor. In a Material Testing Reactor (MTR), nuclear heating is a crucial parameter to design the experimental devices to be irradiated in harsh nuclear conditions. This parameter drives the temperature of the devices and of the samples. The numerical codes can predict this parameter but in-situ measurements are necessary to reach the expected accuracy. For this reason, one objective of the IN-CORE program [1] is to study the combined measurements of neutron and photon flux and their cross advanced interpretation. It should be reminded that both neutron and photon sensors are not totally selective as their signals are due to neutron and photon interactions. We intend to measure the neutron flux by three different kinds of sensors (Uranium Fission chamber, Plutonium Fission chamber and Self Powered Neutron Detector), the photon flux by two different sensors (Ionization chamber and Self Powered Gamma Detector) and the nuclear heating by two different ones (Differential calorimeter andmore » Gamma Thermometer). For the same parameter, we expect that the use of different kinds of sensors will allow a better estimation of the aimed parameter by mixing different spectrum responses and different neutron and gamma contributions. An experimental test called CARMEN-1 is scheduled in OSIRIS reactor (CEA Saclay - France) at the end of 2011, with the goal to map irradiation locations in the reactor reflector to get a first validation of the analysis model. This article focuses on the sensor selection for CARMEN-1 experiment and to the way to link neutron and photon flux measurements in view to reduce their uncertainties but also to better assess the neutron and photon contributions to nuclear heating. (authors)« less

Authors:
; ;  [1];  [2]; ; ; ; ;  [1]; ; ; ; ; ;  [2]
  1. DEN Reactor Studies Dept., French Nuclear Energy and Alternative Energies Commission, CEA Cadarache, 13108 Saint Paul-Lez-Durance (France)
  2. Laboratoire Chimie Provence LCP UMR 6264, Univ. of Provence, Centre St. Jerome, 13397 Marseille Cedex 20 (France)
Publication Date:
OSTI Identifier:
22039816
Resource Type:
Conference
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; 22 refs.; IEEE Catalog Number: CFP1124I-CDR
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; ACCURACY; FISSION CHAMBERS; IRRADIATION; JULES HOROWITZ REACTOR; MAPPING; NEUTRON FLUX; OSIRIS REACTOR; PHOTONS; PLUTONIUM; SELF-POWERED GAMMA DETECTORS; SELF-POWERED NEUTRON DETECTORS; SENSORS; SHOWER COUNTERS; SIGNALS; SPECTRA; THERMOMETERS; URANIUM; VALIDATION

Citation Formats

Fourmentel, D, Villard, J F, Lyoussi, A, Reynard-Carette, C, Bignan, G, Chauvin, J P, Gonnier, C, Guimbal, P, Malo, J Y, Carette, M, Janulyte, A, Merroun, O, Brun, J, Zerega, Y, and Andre, J. Combined analysis of neutron and photon flux measurements for the Jules Horowitz reactor core mapping. United States: N. p., 2011. Web. doi:10.1109/ANIMMA.2011.6172905.
Fourmentel, D, Villard, J F, Lyoussi, A, Reynard-Carette, C, Bignan, G, Chauvin, J P, Gonnier, C, Guimbal, P, Malo, J Y, Carette, M, Janulyte, A, Merroun, O, Brun, J, Zerega, Y, & Andre, J. Combined analysis of neutron and photon flux measurements for the Jules Horowitz reactor core mapping. United States. https://doi.org/10.1109/ANIMMA.2011.6172905
Fourmentel, D, Villard, J F, Lyoussi, A, Reynard-Carette, C, Bignan, G, Chauvin, J P, Gonnier, C, Guimbal, P, Malo, J Y, Carette, M, Janulyte, A, Merroun, O, Brun, J, Zerega, Y, and Andre, J. 2011. "Combined analysis of neutron and photon flux measurements for the Jules Horowitz reactor core mapping". United States. https://doi.org/10.1109/ANIMMA.2011.6172905.
@article{osti_22039816,
title = {Combined analysis of neutron and photon flux measurements for the Jules Horowitz reactor core mapping},
author = {Fourmentel, D and Villard, J F and Lyoussi, A and Reynard-Carette, C and Bignan, G and Chauvin, J P and Gonnier, C and Guimbal, P and Malo, J Y and Carette, M and Janulyte, A and Merroun, O and Brun, J and Zerega, Y and Andre, J},
abstractNote = {We study the combined analysis of nuclear measurements to improve the knowledge of the irradiation conditions in the experimental locations of the future Jules Horowitz Reactor (JHR). The goal of the present work is to measure more accurately neutron flux, photon flux and nuclear heating in the reactor. In a Material Testing Reactor (MTR), nuclear heating is a crucial parameter to design the experimental devices to be irradiated in harsh nuclear conditions. This parameter drives the temperature of the devices and of the samples. The numerical codes can predict this parameter but in-situ measurements are necessary to reach the expected accuracy. For this reason, one objective of the IN-CORE program [1] is to study the combined measurements of neutron and photon flux and their cross advanced interpretation. It should be reminded that both neutron and photon sensors are not totally selective as their signals are due to neutron and photon interactions. We intend to measure the neutron flux by three different kinds of sensors (Uranium Fission chamber, Plutonium Fission chamber and Self Powered Neutron Detector), the photon flux by two different sensors (Ionization chamber and Self Powered Gamma Detector) and the nuclear heating by two different ones (Differential calorimeter and Gamma Thermometer). For the same parameter, we expect that the use of different kinds of sensors will allow a better estimation of the aimed parameter by mixing different spectrum responses and different neutron and gamma contributions. An experimental test called CARMEN-1 is scheduled in OSIRIS reactor (CEA Saclay - France) at the end of 2011, with the goal to map irradiation locations in the reactor reflector to get a first validation of the analysis model. This article focuses on the sensor selection for CARMEN-1 experiment and to the way to link neutron and photon flux measurements in view to reduce their uncertainties but also to better assess the neutron and photon contributions to nuclear heating. (authors)},
doi = {10.1109/ANIMMA.2011.6172905},
url = {https://www.osti.gov/biblio/22039816}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jul 01 00:00:00 EDT 2011},
month = {Fri Jul 01 00:00:00 EDT 2011}
}

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