Alix Sardet

Photon Flux Characterization of a New Electron LINAC in the CINPHONIE Irradiation Facility Through a Bayesian Framework

Malo Lebreton, B. Geslot, Nicolas Estre, Emmanuel Payan et autres

For several years, CEA has been developing high-energy imaging and photon interrogation techniques in the CINPHONIE irradiation bunker (CHICADE facility, CEA IRESNE, Cadarache, France). A new linear electron accelerator (K15 LINAC from Varex) has recently been commissioned and its irradiation field requires …

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Integrating tagged neutron inspection with explainable AI for threat material identification

Hadi Shahabinejad, Davorin Sudac, Karlo Nađ, Isabelle Espagnon et autres

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Performances of TOMIS, a transportable LINAC-based X-ray tomograph

Alix Sardet, Christophe Roure, Olivier Gueton, Emmanuel Payan et autres

Industrial X-ray imaging exams based on linear accelerators (LINAC), while being a powerful tool for the physical inspection of large and/or thick objects, are difficult to implement due to the important radiological constraints associated to the photon spectrum and the irradiation dose …

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Performance of 9 to 15 MV Computed Tomography of large objects in industrial and nuclear field

Nicolas Estre, Olivier David, Daniel J. Eck, B. Geslot et autres

As part of its R&D programs on large objects characterization, the Nuclear Measurement Laboratory at the CEA-Cadarache center has equipped its high-energy tomograph with a new linear accelerator (linac): a VAREX K15 (9 to 15 MV range). This linac delivers a very …

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Delayed neutrons yields and group abundances for thermal-neutron-induced fission of 233U

B. Geslot, Alix Sardet, P. Casoli, Grégoire Kessedjian et autres

In the field of nuclear reactor physics, the precise measurement of delayed neutrons (DN) is crucial for accurately predicting reactor behavior and ensuring safety. This article focuses on the measurement of DN parameters for 233 U, conducted at the Institut Laue-Langevin (ILL, …

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High-energy dual-energy computed tomography for the characterization of large and thick objects

Alix Sardet, Daniel J. Eck, Nicolas Estre, Frédéric Moutet et autres

Usual computed tomography (CT) systems provide information on the layout and nature of materials composing an object. However, this information is limited to the apparent linear attenuation μ of the materials. To reach a more precise and accurate description, in the form …

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Elemental identification of sealed cargo based on fast neutron activation analysis and artificial neural network

Hadi Shahabinejad, Davorin Sudac, Karlo Nađ, Isabelle Espagnon et autres

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Photon flux characterization of a new electron LINAC in the CINPHONIE irradiation facility

B. Geslot, Nicolas Estre, Emmanuel Payan, Daniel J. Eck et autres

Electron linear accelerators (LINACs) are versatile and powerful X-ray sources, that can be used in medical radiotherapy as well as in various industrial applications including non-destructive testing, imaging and security inspection. LINACs accelerate electrons by passing them through a series of oscillating …

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Accurate measurements of delayed neutron data for reactor applications: methodology and application to 235U(nth,f)

Pierre Leconte, Dorian Belverge, David R. Bernard, A. Chebboubi et autres

Abstract Large inconsistencies still exist in nuclear data libraries regarding the kinetic parameters of delayed neutron (DN) precursors. As an example, there is a 17% gap between ENDF-B/VIII.0 and JEFF-3.3 on the average lifetime T1/2 of DN precursors from thermal fission of …

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Integrating Tagged Neutron Inspection with Explainable AI for Threat Material Identification

Hadi Shahabinejad, Davorin Sudac, Karlo Nađ, Isabelle Espagnon et autres

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Extended time-of-flight measurements down to 100 keV at the AMANDE facility with a stilbene scintillator

Michael G. Petit, Augusto Di Chicco, Alix Sardet, Richard Babut et autres

The time-of-flight (ToF) method with scintillators is routinely used for determining neutron energy. However, a technical difficulty related to the loss of scintillator efficiency below 1 MeV makes this technique difficult to implement for the energy decade [100 keV-1 MeV]. New crystal …

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Identification de matériaux par tomodensitométrie haute-énergie dans des objets bétonnés

Nicolas Estre, Daniel J. Eck, Frédéric Moutet, Emmanuel Payan et autres

L’identification des matériaux présents dans des objets volumineux comme des colis de déchets nucléaires nécessite la plupart du temps soit une opération destructive (carottage, découpe) pour les colis bétonnés, soit une intervention humaine (tri, inventaire) sur des colis de faible activité dont …

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