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4 results on '"Stéphane Darbon"'

1. Nuclear background effects on plasma diagnostics for megajoule class laser facility

Author

Aziouz Chabane, Matthieu Hamel, Stéphane Darbon, Jean Larour, J. L. Bourgade, Sylvain Girard, Philippe Paillet, Vincent Goiffon, Melanie Raine, Paola Cervantes, Adrien Rousseau, Pierre Magnan, Olivier Duhamel, DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire Hubert Curien (LHC), Institut d'Optique Graduate School (IOGS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS), Institut Supérieur de l'Aéronautique et de l'Espace (ISAE-SUPAERO), Laboratoire Capteurs et Architectures Electroniques (LCAE), Département Métrologie Instrumentation & Information (DM2I), Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire de Physique des Plasmas (LPP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École polytechnique (X)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Perry M. Bell, Gary P. Grim, Commissariat à l'Energie Atomique et aux énergies alternatives - CEA (FRANCE), Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE), Institut d'optique Graduate School - IOGS (FRANCE), Université Pierre et Marie Curie, Paris 6 - UPMC (FRANCE), Université Jean Monnet - St Etienne (FRANCE), Ecole Polytechnique (FRANCE), Université Paris-Sud 11 (FRANCE), Laboratoire Hubert Curien - LAHC (Saint-Etienne, France), Laboratoire de physique des plasmas - LPP (Toulouse, France), Laboratoire Hubert Curien [Saint Etienne] (LHC), Université Jean Monnet [Saint-Étienne] (UJM)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS), Laboratoire d'Intégration des Systèmes et des Technologies (LIST), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Laboratoire d'Intégration des Systèmes et des Technologies (LIST), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École polytechnique (X)-Sorbonne Université (SU)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)

Subjects
Optical relay, optical relay, accelerator, vulnerability, Vulnerability, Laser MegaJoule, Radiation, Scintillator, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, high radiative constraints, law.invention, 010309 optics, laser facility, Optics, law, 0103 physical sciences, Radiative transfer, Physics, plasma diagnostics, 010308 nuclear & particles physics, business.industry, hardening, [SPI.PLASMA]Engineering Sciences [physics]/Plasmas, ICF, Optique / photonique, DT shot, Nuclear reactor, multilayer coating, Laser, radiation, Damage, optical analyzer, Multilayer coatings, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, Plasma diagnostics, nuclear reactor, business, National Ignition Facility, damage, Laser Mégajoule
Abstract

International audience; Estimating the vulnerability is a key challenge for plasma diagnostics designed to operate in radiative background associated with megajoule class laser facilities. Since DT shots at OMEGA laser facility reproduce the perturbing source expected during the first 100 nanoseconds of a typical DT shot realized at National Ignition Facility (NIF) and Laser MegaJoule facility (LMJ), vulnerability of diagnostic elements such as optical relays or optical analyzers were experimentally studied and, if necessary, hardening approaches have been initiated to authorize their use at higher radiative constraints. Other facilities such as nuclear reactor or accelerator have been also used to estimate vulnerability issues as radiation induced emission of glasses or damage in multilayer coatings.

Published
2013
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2. Mitigation technique for use of CMOS image sensors in megajoule class laser radiative environment

Author

Adrien Rousseau, Sylvain Girard, Philippe Paillet, Stéphane Darbon, Paola Cervantes, Aziouz Chabane, Vincent Goiffon, Pierre Magnan, J. L. Bourgade, Institut Supérieur de l'Aéronautique et de l'Espace (ISAE-SUPAERO), Laboratoire Hubert Curien (LHC), Institut d'Optique Graduate School (IOGS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Commissariat à l'Energie Atomique et aux énergies alternatives - CEA (FRANCE), Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE), Université Jean Monnet - St Etienne (FRANCE), Laboratoire Hubert Curien - LAHC (Saint-Etienne, France), Laboratoire Hubert Curien [Saint Etienne] (LHC), and Institut d'Optique Graduate School (IOGS)-Université Jean Monnet [Saint-Étienne] (UJM)-Centre National de la Recherche Scientifique (CNRS)

Subjects
010504 meteorology & atmospheric sciences, Photonics & Electro-Optics, Fields, Waves & Electromagnetics, Transportation, Radiation, 01 natural sciences, Signal Processing & Analysis, law.invention, Optics, Power, Energy, & Industry Applications, Robotics & Control Systems, law, 0103 physical sciences, Electronic engineering, Radiative transfer, Traitement du signal et de l'image, Neutron, Electrical and Electronic Engineering, Image sensor, Inertial confinement fusion, 0105 earth and related environmental sciences, Physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Engineered Materials, Dielectrics & Plasmas, Pixel, 010308 nuclear & particles physics, business.industry, Laser, CMOS, business
Abstract

International audience; Presented is a new mitigation technique to improve the radiation tolerance of CMOS image sensors to the radiation constraints associated to the fusion by inertial confinement experiments at megajoule class laser facilities. Using the global reset mode, results acquired at the OMEGA facility show the efficiency of this technique to reduce by more than 70% the number of white pixels induced by the mixed 14 MeV neutron and gamma-ray pulse.

Published
2012
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3. Vulnerability of optical detection systems to megajoule class laser radiative environment

Author

Stéphane Darbon, J. L. Bourgade, Sylvain Girard, Philippe Paillet, Adrien Rousseau, Valerian Lalucaa, Vincent Goiffon, Jean Larour, Pierre Magnan, Matthieu Hamel, Laboratoire de Physique des Plasmas (LPP), Université Paris-Saclay-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-École polytechnique (X)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Commissariat à l'Energie Atomique et aux énergies alternatives - CEA (FRANCE), Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE), Université Pierre et Marie Curie, Paris 6 - UPMC (FRANCE), Ecole Polytechnique (FRANCE), Université Paris-Sud 11 (FRANCE), and Département d'Electronique, Optronique et Signal - DEOS (Toulouse, France)

Subjects
Optical relay, Vulnerability, Context (language use), Laser MegaJoule, Scintillator, 01 natural sciences, law.invention, 010309 optics, Optics, law, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], 0103 physical sciences, Radiative transfer, APSb, Nuclear fusion, Neutron, Inertial confinement fusion, CCD, Physics, 010308 nuclear & particles physics, business.industry, CMOS, Laser, Optique, business, Laser Mégajoule
Abstract

International audience; The Laser MegaJoule (LMJ) facility will host inertial confinement fusion experiments in order to achieve ignition by imploding a Deuterium-Tritium filled microballoon [1]. In this context an X-ray imaging system is necessary to diagnose the core size and the shape of the target in the 10-100 keV band. Such a diagnostic will be composed of two parts: an X-ray optical system and a detection assembly. The survivability of each element of this diagnostic has to be ensured within the mixed pulse consisting of X-rays, gamma rays and 14 MeV neutrons created by fusion reactions. The design of this diagnostic will take into account optics and detectors vulnerability to neutron yield of at least 1016. In this work, we will present the main results of our vulnerability studies and of our hardening-by-system and hardening-by- design studies.

Published
2012

4. Development of an x-ray imaging system for the Laser Megajoule (LMJ)

Author

S. Normand, Stéphane Darbon, Grégory Turk, Vesna Simic, C. Reverdin, Gilles Ledoux, Matthieu Hamel, Christophe Dujardin, D. Gontier, Oliver Lodge Laboratory, University of Liverpool, Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Commissariat à l'Energie Atomique (CEA), Département de Physique Théorique et Appliquée (DPTA), DAM Île-de-France (DAM/DIF), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire de Physico-Chimie des Matériaux Luminescents (LPCML), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Mécanique Appliquée, Université des sciences et de la Technologie d'Oran Mohamed Boudiaf [Oran] (USTO MB), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon

Subjects
010302 applied physics, Physics, business.industry, 02 engineering and technology, Scintillator, 021001 nanoscience & nanotechnology, Laser, 01 natural sciences, 7. Clean energy, law.invention, Optics, law, 0103 physical sciences, Shielded cable, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Nuclear fusion, Plasma diagnostics, 0210 nano-technology, business, Instrumentation, Image resolution, Inertial confinement fusion, ComputingMilieux_MISCELLANEOUS, Laser Mégajoule
Abstract

This imaging system aims at recording images of the core size and shape of an imploding deuterium-tritium (DT) microballoon on LMJ inertial confinement fusion (ICF) experiments. Image acquisition is difficult due to the harsh surrounding created by the fusion reaction, which affects system specifications. This one is made of a scintillator, an optical relay, and a CCD camera shielded from the surrounding. The system was tested on different facilities at CEA/DIF, where a spatial resolution of 120 μm was achieved and gamma dose up to 20 rad effects were measured. Setup and performed test are described.

Published
2010
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