11 results on '"Gauthier, Yannick"'
Search Results
2. Commissioning of the Proton-Linac ECR Source for FAIR
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Fils, JéRôMe, Berezov, Rustam, Bolzon, Benoit, Chauvin, Nicolas, Delferrière, Olivier, Gauthier, Yannick, Hollinger, Ralph, Sauce, Yannick, Tuske, Olivier, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay
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solenoid ,rfq ,emittance ,Physics::Instrumentation and Detectors ,[PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph] ,Physics::Accelerator Physics ,linac ,Beam extraction and optics ,Accelerator Physics ,proton - Abstract
The construction of the source and Low Energy Beam Transport of the future Proton-Linac for the FAIR facility in Darmstadt, Germany (Facility for Antiproton and Ion Research) is going forward at CEA-Saclay in France. The latest results of normalized emittance and of species proportions are shown at different position, directly at the source exit, between the 2 solenoids of the LEBT, and also around the theoretical focal point at RFQ entrance position. A new software for emittance treatment allows separating the different species after emittance measurement and is used to process the data. This paper presents the status of the FAIR injector commissioning at Saclay in summer 2018., Proceedings of the 23th Int. Workshop on ECR Ion Sources, ECRIS2018, Catania, Italy
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- 2018
3. ESS nBLM: Beam Loss Monitors based on Fast Neutron Detection
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Papaevangelou, Thomas, Alves, Helder, Aune, Stephan, Beltramelli, Joel, Bertrand, Quentin, Bey, Thomas, Bolzon, Benoit, Chauvin, Nicolas, Combet, Michel, Desforge, Daniel, Desmons, Michel, Dolenc Kittelmann, Irena, Gauthier, Yannick, Giner-Demange, Emeline, Gomes, Adelino, Gougnaud, Francoise, Gressier, Vincent, Hall-Wilton, Richard, Harrault, Francis, Höglund, Carina, Iguaz Gutierrez, Francisco Jose, Joannem, Tom, Kebbiri, Mariam, Lahonde-Hamdoun, Caroline, Le Bourlout, Pascal, Legou, Philippe, Maillard, Olivier, Marcel, Alain, Marchand, Claude, Mariette, Yannick, Marroncle, Jacques, Nadot, Victor, Nikolopoulos, Konstantinos, Oublaid, Maryam, Perreu, Gabrielle, Piquet, Olivier, Pomorski, Michal, Pottin, Bruno, Robinson, Linda, Sauce, Yannick, Schwindling, Jerome, Segui, Laura, Senée, Franck, Shea, Thomas, Svensson, Per-Olof, Touzery, Robert, Tsiledakis, Georgios, Tuske, Olivier, Uriot, Didier, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Laboratoire d'Intégration des Systèmes et des Technologies (LIST), 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), European Spallation Source ERIC, Lund University [Lund], School of Physics and Astronomy [Birmingham], University of Birmingham [Birmingham], Laboratoire Capteurs Diamant (LCD-LIST), Département Métrologie Instrumentation & Information (DM2I), 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)-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, Dong-O Jeon (IBS), Dong-Eon Kim (PAL), Volker RW Schaa (GSI), European Project: 676548,H2020,H2020-INFRADEV-1-2015-1,BrightnESS(2015), and European Project: 654168,H2020,H2020-INFRAIA-2014-2015,AIDA-2020(2015)
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Physics::Instrumentation and Detectors ,[PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph] ,Micromegas detector ,7. Clean energy ,01 natural sciences ,Accelerator Physics ,neutron ,ionization chamber ,0103 physical sciences ,X-rays ,photons ,fast neutrons ,linac ,010302 applied physics ,instrumentation ,Neutron-gamma discrimination ,detector ,010308 nuclear & particles physics ,photon ,neutrons ,gamma-rays ,radioactivity ,Beam Instruments and Interactions ,European Spallation Source ,Physics::Accelerator Physics ,ionizing radiation ,proton - Abstract
A new type of Beam Loss Monitor (BLM) system is being developed for use in the European Spallation Source (ESS) linac, primarily aiming to cover the low energy part (proton energies between 3-100 MeV). In this region of the linac, typical BLM detectors based on charged particle detection (i.e. Ionization Cham-bers) are not appropriate because the expected particle fields will be dominated by neutrons and photons. Another issue is the photon background due to the RF cavities, which is mainly due to field emission from the electrons from the cavity walls, resulting in brems-strahlung photons. The idea for the ESS neutron sensi-tive BLM system (ESS nBLM) is to use Micromegas detectors specially designed to be sensitive to fast neutrons and insensitive to low energy photons (X and gammas). In addition, the detectors must be insensitive to thermal neutrons, because those neutrons may not be directly correlated to beam losses. The appropriate configuration of the Micromegas operating conditions will allow excellent timing, intrinsic photon back-ground suppression and individual neutron counting, extending thus the dynamic range to very low particle fluxes., Proceedings of the 61\textsuperscript{st} ICFA ABDW on High-Intensity and High-Brightness Hadron Beams, HB2018, Daejeon, Korea
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- 2018
4. Increase of IPHI Beam Power at CEA Saclay
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Senée, Franck, Ausset, Patrick, Belloni, Francesca, Ben Abdillah, Mohammed, Benedetti, Florian, Bolzon, Benoit, Chauvin, Nicolas, Desmons, Michel, Gauthier, Yannick, Giner-Demange, Emeline, Gomes, Adelino, Harrault, Francis, Joly, Christophe, Marchand, Claude, Marroncle, Jacques, Oublaid, Maryam, Papaevangelou, Thomas, Perreu, Gabrielle, Piquet, Olivier, Pottin, Bruno, Sauce, Yannick, Schwindling, Jerome, Segui, Laura, Touzery, Robert, Tuske, Olivier, Uriot, Didier, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)
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rfq ,neutron ,detector ,[PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph] ,T01 Proton and Ion Sources ,04 Hadron Accelerators ,Accelerator Physics ,target ,proton - Abstract
For the first time, in April 2016, the SILHI source produced a proton beam for IPHI RFQ. Due to several technical difficulties on the RFQ water cooling skid, a short RF power pulse (100 μs at the beginning until few hundred microseconds) is injected into the RFQ accelerates the high intensity proton beam up to 3 MeV. The repetition rate is tuned between 1 and 5 Hz. Under these conditions, the beam power after the RFQ is lower than 100 W. At the end of 2017, the 352 MHz RFQ conditioning has been completed (with the same duty cycle) and the proton beam has been accelerated. The increase of the beam power is expected to continue in 2018 in order to reach several kilowatts by the end of the year. In addition, two Ionization beam Profile Monitors (IPM) developed for ESS have been tested on the deviated beam line with a very low duty cycle. The IPHI facility should demonstrate the possibility to produce neutrons with a flexible compact accelerator in the framework of the SONATE project. This paper presents the status of the IPHI project in April 2018., Proceedings of the 9th Int. Particle Accelerator Conf., IPAC2018, Vancouver, BC, Canada
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- 2018
5. Les publics de la démocratie participative. Contribution à une étude quantitative et qualitative à travers les dispositifs des départements du Nord et du Pas-de-Calais
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Gauthier, Yannick, Centre d'Etudes et de Recherches Administratives, Politiques et Sociales - UMR 8026 (CERAPS), Sciences Po Lille - Institut d'études politiques de Lille (IEP Lille)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), and Université de Lille-Centre National de la Recherche Scientifique (CNRS)
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[SHS.SCIPO]Humanities and Social Sciences/Political science - Abstract
National audience; Ce projet de thèse vise à répondre à l’énigme de l’engagement participatif des« habitué.e.s » de la participation et des « inouï.e.s » en mobilisant les outils de la sociologie dumilitantisme. La mise en œuvre d’un protocole d’enquête quantitatif et qualitatif permettra dedresser des portraits typiques et atypiques de profanes engagés dans les conseils citoyens duNord et du Pas-de-Calais.
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- 2018
6. Les publics de la démocratie participative. Contribution à une étude quantitative et qualitative à travers les conseils citoyens des départements du Nord et du Pas-de-Calais
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Gauthier, Yannick
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- 2018
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7. « Devenir quelqu’un ». (Re)valorisation de l’identité sociale par les bénéfices symboliques de l’engagement participatif
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Gauthier, Yannick, primary
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- 2019
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8. ESS Emittance Measurements at INFN CATANIA
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Tuske, Olivier, Celona, Luigi, Cheymol, Benjamin, Chu, Isabelle, Daniel-Thomas, Philippe, Denis, Jean Francois, Gauthier, Yannick, Joannem, Tom, Midttun, Oystein, Misiara, Nicolas, Monteremand, Mathieu, Nadot, Victor, Neri, Lorenzo, Perreu, Gabrielle, Senée, Franck, Shea, Thomas, Silva, Victor, Vacher, Thierry, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux (LITEN), Institut National de L'Energie Solaire (INES), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)
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emittance ,[PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph] ,06 Beam Instrumentation, Controls, Feedback and Operational Aspects ,ion-source ,ion ,simulation ,7. Clean energy ,Accelerator Physics ,proton - Abstract
Beam characteristics at low energy are an absolute necessity for an acceptable injection in the next stage of a linear accelerator, and are also necessary to reduce beam loss and radiation inside the machine. CEA is taking part of ESS linac construction, by designing Emittance Measurement Units (EMU) for the Low Energy Beam Transport (LEBT). The EMU are designed to qualify the proton beam produced by the INFN Catania ion source. This measurement has been decided to be time resolved, allowing to follow the beam emittance reduction, during the pulse length. A 1Mhz acquisition board controlled by EPICS save raw datas to an archiver in order to be able to post process the measurements for time resolution. The design corresponds to an Allison's scanner, using entrance and exit slits, electrostatic plates and a faraday cup. The beamstopper protects the device and can be removable to fit to beam power. It has been manufactured by the CEA/LITEN with copper tungsten HIP technique. This article report the first measurements on the ESS injector at INFN CATANIA., Proceedings of the 8th Int. Particle Accelerator Conf., IPAC2017, Copenhagen, Denmark
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- 2017
9. Commissioning of the High Intensity Proton Injector of the Facility for Anti Proton and Ion Research at CEA-Saclay
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Tuske, Olivier, Ameil, Frederic, Berezov, Rustam, Chauvin, Nicolas, Delferrière, Olivier, Fils, Jérôme, Gauthier, Yannick, Girardot, Patrick, Hollinger, Ralph, Misiara, Nicolas, Sauce, Yannick, Senée, Franck, Simon, Claire, Vacher, Thierry, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay
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solenoid ,Status reports and new development ,p: linear accelerator ,Physics::Instrumentation and Detectors ,[PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph] ,beam transport ,particle source: design ,7. Clean energy ,microwaves ,Accelerator Physics ,ion: particle source ,diagnostics ,Physics::Accelerator Physics ,beam: injection ,Darmstadt GSI FAIR ,beam: pulsed ,ion ,performance ,activity report ,plasma ,acceptance ,proton - Abstract
The Facility for Antiproton and Ion Research (FAIR) located at GSI (Darmstadt) in Germany addresses several fields of physics research within a single installation. One of the contribution of Irfu/SACM at CEA-Saclay to the FAIR linear proton accelerator concerns the development and construction of the ion source and the low energy line. The 2.45 GHz microwave ion source will deliver a 100 mA H⁺ beam pulsed at 4 Hz with an energy of 95 keV. A low energy beam transport (LEBT) line based on a dual solenoids focusing scheme allows the injection of the proton beam into the radio frequency quadrupole (RFQ) within an acceptance of 0.3π mm.mrad (norm., rms). An electrostatic chopper system located between the second solenoid and the RFQ is used to cut the beam macro pulse from the source to inject 36 μs long beam pulses into the RFQ. This article reports the finalization of the installation of the injector with the detail of dedicated diagnostics, the first beam measurements and gives a planning of the different commissioning phases, Proceedings of the 22nd Int. Workshop on ECR Ion Sources, ECRIS2016, Busan, Korea
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- 2016
10. Development of a Compact High Intensity Ion Source for Light Ions at CEA-Saclay
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Delferrière, Olivier, Gauthier, Yannick, Gobin, Raphael, Harrault, Francis, Tuske, Olivier, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay
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[PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph] ,high-voltage ,extraction ,Physics::Accelerator Physics ,light-ion ,ion ,7. Clean energy ,Beam extraction and optics ,plasma ,Accelerator Physics - Abstract
During the past 5 years, a R&D program has been launched to improve the beam quality of ECR 2.45 GHz high intensity light ion sources for high power accelerators. The main goal was to minimize the divergence and emittance growth of intense beams due to the space charge as early as possible on the low energy transfer line for a better injection in the second stage of acceleration (RFQ). This has been achieved by reducing the length of the extraction system, to be able to put the first solenoid as close as possible to the extraction aperture. This was performed with the ALISES concept (Advanced Light Ion Source Extraction System). Encouraging results have been obtained in 2012 but with limitations due to Penning discharges in the accelerating column. Taking advantages of ALISES geometry, intensive studies and simulations have been undertaken to eliminate the discharge phenomena. An Innovative and compact source geometry has been found and the source has been fabricated. This new prototype and its performances will be described, as well as magnetic field configuration studies and its influence on the extracted beam., Proceedings of the 22nd Int. Workshop on ECR Ion Sources, ECRIS2016, Busan, Korea
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- 2016
11. High Intensity Beam Production at CEA/Saclay For The IPHI Project
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Gobin, Raphael, Bogard, Daniel, Delferrière, Olivier, Desmons, Michel, Gauthier, Yannick, Harrault, Francis, Peauger, Franck, Perreu, Gabrielle, Pottin, Bruno, Sauce, Yannick, Schwindling, Jerome, Senée, Franck, Tuske, Olivier, Uriot, Didier, Vacher, Thierry, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay
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solenoid ,rfq ,Status reports and new development ,[PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph] ,diagnostics ,Physics::Accelerator Physics ,ion ,7. Clean energy ,proton ,Accelerator Physics - Abstract
CEA/Saclay is involved in high power proton accelerators for long years. This activity started in the 90's, with the development of the SILHI source which routinely produces tens mA of proton beam. Several industrial difficulties led to a very long IPHI RFQ construction process. The 352 MHz RFQ conditioning is presently in progress. Before the completion of the conditioning in CW mode, tests with pulsed proton beam have been decided. As a consequence, the SILHI source recently produced very short H⁺ beam pulses in order to allow the first IPHI beam acceleration. Such very short pulses, in the range of few hundred microseconds, allowed analyzing the beam loading of the RFQ cavity as well as conditioning the middle energy diagnostic. This article will focus on the source parameters and beam characteristics in the low energy beam line leading to the best RFQ transmission., Proceedings of the 22nd Int. Workshop on ECR Ion Sources, ECRIS2016, Busan, Korea
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- 2016
- Full Text
- View/download PDF
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