Commissariat a L'energie Atomique Et Aux Energies Alternatives

Université´ D'aix-Marseille

Commissariat a L'energie Atomique

Centre National De La Recherche Scientifique

Compagnie Generale Des Matieres Nucleaires

Areva Nc

Abdallah Lyoussi

Michel Carette

Christelle Reynard-Carette

Emmanuel Payan

Laurent Ottaviani

Krzysztof Umiastowski

Alain Mariani

Julie Brun

Jean-François Villard

Philippe Guimbal

Vanessa Vervisch

Fatima Issa

Frederic Laine

Adrien Volte

Emmanuel Rés La Petite Négresse Payan

A measurement core for measuring nuclear heating, the core extending in a longitudinal direction and having a main plane, includes at least: a first layer of material, forming a first sample; a first thin layer of electrical insulation on the first sample; a thin conductive layer forming a heating electrical resistor on the first layer of electrical insulation; and a second thin layer of electrical insulation on the heating electrical resistor. A calorimetric sensor includes: an outer jacket; a gas contained in the jacket; a measurement core disposed in the jacket; a link for holding the core in the jacket and transferring the heat between the core and the jacket; and temperature measurement capable of measuring the temperature at a hot point, and the temperature at a cold point.

Measurement core for measuring nuclear heating in a nuclear reactor and calorimetric sensor incorporating such a measurement core

A sample holder for the measurement of nuclear heating in a nuclear reactor, comprises: a body configured to contain a heat-sensitive sample along a longitudinal axis; and means for removing heat from the body to the exterior of the sample holder, wherein the means for removing heat from the body to the exterior of the sample holder comprise: a peripheral structure located on the periphery of the body; and a central structure mechanically linking the body and the peripheral structure, the central linking structure being configured to transfer heat radially, i.e. perpendicularly to the longitudinal axis, between the body and the peripheral structure. A calorimeter cell for the measurement of nuclear heating in a nuclear reactor, comprises: at least one sample holder; a seal-tight casing in which the sample holder is placed; and temperature-measuring means.

Sample holder for measuring nuclear heating in a nuclear reactor, and calorimetric cell including at least one such sample holder

A method for producing a device for detecting flux of neutrons with parameters in predetermined ranges, including: one phase of determining parameters, including: simulating penetration of a flux of incident neutrons with parameters in the predetermined ranges through a modelled stack including in succession and in order at least: one first electrode; one substrate including: a first layer; and a second layer; and one second electrode; and simulating at least one defect peak created in the first layer by vacancies and/or ionization of the particles generated by collisions between neutrons of the flux of incident neutrons and atoms of the second dopant species; and identifying depth of the defect peak closest the interface between the first and second layers of the modelled stack.

Method for carrying out a neutron detector and neutron detector

A method for determining the spectral and spatial distribution of a braking photon flow along at least one direction in space (x, y, z), characterized in that the method comprises measuring the neutrons resulting from the impact of the braking photons (ph) on at least one conversion target which is moved in the direction (x, y, z) in space. The invention can be used for X-rays, medical imaging, tomography, etc.

Method for determining the spectral and spatial distribution of braking photons, and related device

The system for automatic determination of the density of an object () comprises: The method for using the system described above includes steps to calibrate components of apparatusesand, and steps to actually determine the significant dimension of objects (), that are done on each object () in said set of objects.

Method and system for determining the density and dimensional characteristics of an object and application to checking of nuclear fuel pellets during manufacturing

Irradiation and/or counting enclosure for neutron detection analysis

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Manosque, France

Abdallah Lyoussi