Vincent Lamirand
EPFL SB IPHYS LRS
PH D3 475 (Bâtiment PH)
Station 3
1015 Lausanne
Web site: Site web: https://lrs.epfl.ch/
+41 21 693 33 46
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Domaines de compétences
Détection de rayonnements, Instrumentation, Physique des réacteurs, Mesure et métrologie, Méthodes Monte Carlo, Radioprotection, Réactions nucléaires, Analyse de données, Analyse par faisceau d'ions, Accélérateurs de particules (MeV)
Mission
Je suis responsable des activités de recherche expérimentale du LRS à l'EPFL, principalement sur le réacteur expérimental CROCUS et la cavité d'irradiation LOTUS. Je suis également adjoint du Chef des installations nucléaires O. Pakari. Enfin, j'enseigne à destination des étudiants de Physique et en particulier du Master en Génie nucléaire, par le cours de Détection de rayonnements, et les travaux pratiques sur le réacteur et dans nos installations.Je suis actuellement membre du Conseil de Faculté des Sciences de base, et ce depuis 2016.
Biographie
J'ai effectué ma thèse de doctorat sur la mesure de sections efficaces de réactions (p,n) sur accélérateur à l'IRSN, suivi d'un postdoctorat sur le développement de détecteurs neutron pour la physique des réacteurs au CEA, les deux en France au centre de recherche de Cadarache. J'ai été recruté par Andreas Pautz pour prendre la direction des activités expérimentales du LRS, et en particulier relancer les expériences sur le réacteur nucléaire CROCUS. Je suis en poste à l'EPFL depuis octobre 2014, en double affiliation avec l'Institut Paul Scherrer depuis 2016, où j'ai soutenu ma tenure en 2020.Parcours professionnel
Program manager of experimental research, Deputy Head of LRS nuclear facilities
Laboratory for Reactor Physics and Systems Behaviour (LRS)
EPFL and Paul Scherrer Institute (since 2016)
2014
Physicist, postdoctoral fellow
Experimental Physics Service (SPEx)
Atomic Energy Commission (CEA, France)
2012-2014
PhD student
Laboratory for Neutron Metrology and Dosimetry (LMDN)
Radioprotection and Nuclear Safety Institute (IRSN, France)
2008-2011
Formation
PhD degree
Nuclear Physics
UJF Grenoble 1 (France)
2011
Master Degree
Physics, sp. in Subatomic Physics
UCB Lyon 1 (France)
2008
Bachelor Degree
Physics
UCB Lyon 1 (France)
2006
Publications
Publications Infoscience
Comparison of high-fidelity transport code predictions against the NECTAR intra-pin reaction rate measurements
Annals of Nuclear Energy. 2025. DOI : 10.1016/j.anucene.2025.111430.Measurement of the Prompt Neutron Decay Constant in a Zero-Power Reactor Using a Novel 3D Detector System
NUCLEAR SCIENCE AND ENGINEERING. 2025. DOI : 10.1080/00295639.2025.2456411.CORTEX experiments – Part I: Modulation campaigns in AKR-2 & CROCUS for the validation of neutron noise codes
Annals of Nuclear Energy. 2025. DOI : 10.1016/j.anucene.2024.110928.Welch Method and Bootstrapping Applied to Subcritical Gamma Noise
NUCLEAR SCIENCE AND ENGINEERING. 2025. DOI : 10.1080/00295639.2024.2445469.CORTEX experiments, Part III: Experimental determination of the zero power transfer function of AKR-2 with reliable uncertainties
Annals of Nuclear Energy. 2024. DOI : 10.1016/j.anucene.2024.110686.CORTEX experiments, Part II: Postprocessing of neutron noise time series to determine reliable mean and uncertainties
Annals of Nuclear Energy. 2024. DOI : 10.1016/j.anucene.2024.110704.Revision of PSI calculation capabilities and validation experience on the BEPU-type reactor dosimetry applications
2024. 17 International Symposium on Reactor Dosimetry (Part II), Lausanne, Switzerland, 2023-05-21 - 2023-05-26. DOI : 10.1051/epjconf/202430803011.Towards a highly efficient and unbiased population-control algorithm for kinetic Monte Carlo simulations
2024. Joint International Conference on Supercomputing in Nuclear Applications + Monte Carlo, Paris, France, 2024-10-20 - 2024-10-24. DOI : 10.1051/epjconf/202430209006.Fast simulation of neutron noise using the Transient Fission Matrix approach and validation on the CROCUS reactor
2024. Joint International Conference on Supercomputing in Nuclear Applications + Monte Carlo, Paris, France, 2024-10-20 - 2024-10-24. DOI : 10.1051/epjconf/202430208002.Neutron-Gamma Noise Measurements in a Zero-Power Reactor Using Organic Scintillators
Ieee Transactions On Nuclear Science. 2024. DOI : 10.1109/TNS.2023.3337657.Gamma-ray Spectroscopy in Low-Power Nuclear Research Reactors
Journal Of Nuclear Engineering. 2024. DOI : 10.3390/jne5010003.Intra-pin Reaction Rate Measurements in the CROCUS Experimental Reactor
IEEE Transactions on Nuclear Science. 2024. DOI : 10.1109/TNS.2024.3370371.High-Resolution Modeling Without Computation Slowdown for PETALE in CROCUS
Nuclear Science and Engineering. 2024. DOI : 10.1080/00295639.2024.2357963.Gamma noise to non-invasively monitor nuclear research reactors
Scientific Reports. 2024. DOI : 10.1038/s41598-024-59127-y.Large volume dosimetry for BLOOM in CROCUS
2024Sub-critical gamma noise measurements in the CROCUS zero-power reactor
2024. International Conference on Physics of Reactors, San Francisco, United States, 2024-04-21 - 2024-04-24. p. 118 - 127. DOI : 10.13182/PHYSOR24-43501.Measurement of the Prompt Decay Constant in a Zero Power Reactor Using a Novel 3D Detector System
2024. International Conference on Physics of Reactors, San Francisco, United States, 2024-04-21 - 2024-04-24. p. 155 - 163. DOI : 10.13182/PHYSOR24-43877.Design of an Open-Loop Pile-Oscillation Program in the CROCUS Reactor
IEEE Transactions on Nuclear Science. 2024. DOI : 10.1109/TNS.2024.3371183.Modeling noise experiments performed at AKR-2 and CROCUS zero-power reactors
Annals Of Nuclear Energy. 2023. DOI : 10.1016/j.anucene.2023.110066.Development of a multi-channel gamma-blind fast neutron detector based on wavelength shifting fibers embedded in a ZnS:Ag epoxy mixture
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2023. DOI : 10.1016/j.nima.2023.168385.Analysis of the preliminary campaign for the PETALE program
Epj Nuclear Sciences & Technologies. 2023. DOI : 10.1051/epjn/2023010.Design of an Instrumented Fuel Rod for Intra-pin Neutron Flux Measurements in the CROCUS Experimental Reactor
EPJ Web of Conferences. 2023. DOI : 10.1051/epjconf/202328804007.High accuracy measurement of the prompt neutron decay constant in CROCUS using Gamma Noise and bootstrapped uncertainties
Annals Of Nuclear Energy. 2022. DOI : 10.1016/j.anucene.2022.109011.Characterization of High Harmonic Frequencies in Reactor Noise Experiments Within the CORTEX Project
IEEE Transactions on Nuclear Science. 2022. DOI : 10.1109/TNS.2022.3143238.Millimetric fuel rod displacements: an experimental study of the impact on local thermal neutron flux in the CROCUS reactor
2022. International Conference on Physics of Reactors, Pittsburgh, United States, 2022-05-15 - 2022-05-20. p. 2632 - 2641. DOI : 10.13182/PHYSOR22-37846.Miniature and Minimalistic Neutron Detectors for Online High-Resolution Experiments in the Zero-Power Reactor CROCUS
Lausanne, EPFL, 2022. DOI : 10.5075/epfl-thesis-9492.Modeling the response of a diamond detector in the zero power reactor CROCUS
European Physical Journal Plus. 2021. DOI : 10.1140/epjp/s13360-021-02230-0.Delayed gamma fraction determination in the zero power reactor CROCUS
Epj Nuclear Sciences & Technologies. 2021. DOI : 10.1051/epjn/2021015.Preliminary analysis of the PETALE program and comparison to simulations
2021Investigation of the Fission Matrix methodology using the Monte Carlo code Serpent 2 and application to the CROCUS reactor
2021Extension of miniature neutron scintillators features in CROCUS: novel acquisition scheme and extended flux range
2021High resolution measurements with miniature neutron scintillators in the SUR-100 zero power reactor
2021. Conference on Advancements in Nuclear Instrumentation Measurement Methods and their Applications (ANIMMA), Prague, CZECH REPUBLIC, Jun 21-25, 2021. DOI : 10.1051/epjconf/202125304029.PISTIL, a reactivity modulation device to probe the transfer function of the nuclear reactor CROCUS
2021. Conference on Advancements in Nuclear Instrumentation Measurement Methods and their Applications (ANIMMA), Prague, CZECH REPUBLIC, Jun 21-25, 2021. DOI : 10.1051/epjconf/202125304007.First in-core gamma spectroscopy experiments in a zero power reactor
2021. Conference on Advancements in Nuclear Instrumentation Measurement Methods and their Applications (ANIMMA), Prague, CZECH REPUBLIC, Jun 21-25, 2021. DOI : 10.1051/epjconf/202125304022.Local and high distance neutron and gamma measurements of fuel rods oscillation experiments
2021. Conference on Advancements in Nuclear Instrumentation Measurement Methods and their Applications (ANIMMA), Prague, CZECH REPUBLIC, Jun 21-25, 2021. DOI : 10.1051/epjconf/202125304024.Design of a 150-miniature detectors 3D core-mapping system for the CROCUS reactor
2021. Conference on Advancements in Nuclear Instrumentation Measurement Methods and their Applications (ANIMMA), Prague, CZECH REPUBLIC, Jun 21-25, 2021. DOI : 10.1051/epjconf/202125304023.Kilogram-Scale Crystallogenesis of Halide Perovskites for Gamma-Rays Dose Rate Measurements
Advanced Science. 2020. DOI : 10.1002/advs.202001882.Review of kinetic modulation experiments in low power nuclear reactors
Epj Nuclear Sciences & Technologies. 2020. DOI : 10.1051/epjn/2020017.The Unscented Kalman Filter: Introduction and Application to Point Reactor Kinetics
2020Uncertainty propagation based on correlated sampling technique for nuclear data applications
Epj Nuclear Sciences & Technologies. 2020. DOI : 10.1051/epjn/2020003.Uncertainty propagation for the design study of the PETALE experimental programme in the CROCUS reactor
Epj Nuclear Sciences & Technologies. 2020. DOI : 10.1051/epjn/2020004.A mm(3) Fiber-Coupled Scintillator for In-Core Thermal Neutron Detection in CROCUS
Ieee Transactions On Nuclear Science. 2020. DOI : 10.1109/TNS.2020.2977530.Measurement of the Gas Velocity in a Water-Air Mixture in CROCUS Using Neutron Noise Techniques
Nuclear Technology. 2020. DOI : 10.1080/00295450.2019.1701906.Validation of the Serpent 2 model for the CARROUSEL facility
2020Noise analysis techniques of in-core modulation experiments of the European CORTEX project
2020. 29th International Conference Nuclear Energy for New Europe (NENE 2020), Portorož, Slovenia, September 7–10, 2020. p. 212.1 - 212.8.Developing and testing a miniature fiber-coupled scintillator for in-core neutron counting in CROCUS
2020. 6th International Conference on Advancements in Nuclear Instrumentation Measurement Methods and their Applications (ANIMMA), Portoroz, SLOVENIA, Jun 17-21, 2019. DOI : 10.1051/epjconf/202022504018.Power calibration methodology at the CROCUS reactor
2020. 6th International Conference on Advancements in Nuclear Instrumentation Measurement Methods and their Applications (ANIMMA), Portoroz, SLOVENIA, Jun 17-21, 2019. DOI : 10.1051/epjconf/202022504022.Experimental and numerical study of stochastic branching noise in nuclear reactors
Lausanne, EPFL, 2020. DOI : 10.5075/epfl-thesis-8336.Neutron noise experiments in the AKR-2 and CROCUS reactors for the European project CORTEX
2020. 6th International Conference on Advancements in Nuclear Instrumentation Measurement Methods and their Applications (ANIMMA), Portoroz, SLOVENIA, Jun 17-21, 2019. DOI : 10.1051/epjconf/202022504023.Assessment of representativity of the PETALE experiments for validation of Swiss LWRs ex-core dosimetry calculations
2020. International Conference on Nuclear Data for Science and Technology (ND), Beijing, PEOPLES R CHINA, May 19-24, 2019. DOI : 10.1051/epjconf/202023922001.Towards the validation of neutron noise simulators: qualification of data acquisition systems
2019. International Conference on Mathematics and Computational Methods applied to Nuclear Science and Engineering (M&C 2019), Portland, OR, USA, August 25-29, 2019.Measurement of the gas velocity in a water-air mixture in crocus by neutron noise technique
2019. International conference on mathematics and computational methods applied to nuclear science and engineering (M&C 2019), Portland, OR, USA, August 25-29, 2019.Determination of the activity inventory and associated uncertainty quantification for the CROCUS zero power research reactor
Annals of Nuclear Energy. 2019. DOI : 10.1016/j.anucene.2019.107034.An Experimental Programme optimized with Uncertainty Propagation: PETALE in the CROCUS Reactor
2019. WONDER 2018 : 5th International Workshop On Nuclear Data Evaluation for Reactor applications, Aix-en-Provence, France, October 8-12, 2018. DOI : 10.1051/epjconf/201921103003.Kinetic Parameter Measurements in the CROCUS Reactor Using Current Mode Instrumentation
Ieee Transactions On Nuclear Science. 2018. DOI : 10.1109/TNS.2018.2831180.Intercomparison of neutron noise measurement systems in the CROCUS reactor
2018. PHYSOR 2018: Reactor Physics paving the way towards more efficient systems, Cancún, Mexico, April 22-26, 2018.Investigation of spatial effects on neutron noise measurements in the zero power reactor CROCUS
2018. PHYSOR 2018: Reactor Physics paving the way towards more efficient systems, Cancún, Mexico, April 22-26, 2018.Design of Separated Element Reflector Experiments in CROCUS: PETALE
2018. 16th International Symposium on Reactor Dosimetry, Santa Fe, NM, May 07-12, 2017. p. 1 - 14. DOI : 10.1520/STP760820170090.Total Monte Carlo acceleration for the PETALE experimental programme in the CROCUS reactor
2018. WONDER 2018 : 5th International Workshop On Nuclear Data Evaluation for Reactor applications, Aix-en-Provence, France, October 8-12, 2018. DOI : 10.1051/epjconf/201921103002.Design of Separated Element Reflector Experiments in CROCUS: PETALE
2017. ISRD16 International Symposium on Reactor Dosimetry, Santa Fe, New Mexico, USA, May 7-12, 2017.Future experimental programmes in the CROCUS reactor
2016. RRFM/IGORR 2016, Berlin, Germany, March 13-17, 2016. p. 284 - 292. DOI : 10.13140/RG.2.1.2309.6728.Correction factors to apply to fission rates measured by miniature fission chambers in various neutron spectra
2014. IGORR Conference 2014, San Carlos de Bariloche, Argentina, November 17-21, 2014. DOI : 10.13140/RG.2.1.3106.3923.Recherche
Mon travail s'inscrit dans le cadre des activités expérimentales de recherche du LRS, détaillées sur ses pages : ici.
Mon travail actuel consiste à analyser le programme expérimental PETALE, portant sur les données nucléaires de l'acier, et à préparer les prochains programmes dans CROCUS sur des mesures de flux intrapin (NECTAR) et de réactivité par oscillation d'échantillon (BLOOM). Je co-encadre la thèse de doctorat de Thomas Ligonnet sur l'analyse et l'extension de PETALE dans le cadre du projet HARVEST-X.
Mes doctorants Fanny Vitullo et Yifeng Jiang (co-encadrement en collaboration avec le CEA en France), dont les travaux portent sur le développement de mesure neutron en cœur par scintillateur miniature et fibre optique, et sur la modulation neutronique en réacteur, ont soutenu leurs thèse en septembre et octobre 2022, respectivement.
Mon travail actuel consiste à analyser le programme expérimental PETALE, portant sur les données nucléaires de l'acier, et à préparer les prochains programmes dans CROCUS sur des mesures de flux intrapin (NECTAR) et de réactivité par oscillation d'échantillon (BLOOM). Je co-encadre la thèse de doctorat de Thomas Ligonnet sur l'analyse et l'extension de PETALE dans le cadre du projet HARVEST-X.
Mes doctorants Fanny Vitullo et Yifeng Jiang (co-encadrement en collaboration avec le CEA en France), dont les travaux portent sur le développement de mesure neutron en cœur par scintillateur miniature et fibre optique, et sur la modulation neutronique en réacteur, ont soutenu leurs thèse en septembre et octobre 2022, respectivement.
Enseignement & Phd
Doctorants
Dupont-Bembinoff Alexis Paul Boris Claude, Ligonnet Thomas Jean-François,A dirigé les thèses EPFL de
Pakari Oskari Ville , Vitullo Fanny ,Thèses de Master
- Thomas Ligonnet (EPFL-ETH Zurich, Nuclear eng.), encadrement partagé avec A. Laureau (CNRS) : "Preliminary analysis of the PETALE program and comparison to simulations", 2021
- Colin Rochat (EPFL, Physics), encadrement partagé avec F. Vitullo : "Application of miniature scintillators to high neutron flux reactor measurements", 2021
- Edoardo Brunetto (PoliTo, Italie, Nuclear eng.), encadrement partagé avec F. Vitullo : "Highly localized measurements in UniStuttgart reactor", 2020
- Tom Mager (Phelma, France-PoliTo, Italie, Nuclear eng.), encadrement partagé avec O. Pakari : "The LEAF system and gamma detection applications in CROCUS", 2019-2020
- Yifeng Jiang (INSA-INSTN, France, Nuclear eng.), encadrement partagé avec A. Laureau : "Characterization of the neutron spectrum in the EPFL CROCUS reactor by foil activation dosimetry and Monte Carlo calculations", 2018
- Adrien Theler (EPFL, Physique), encadrement partagé avec B. Geslot (CEA) : "Caractérisation et analyse des signaux de chambres à fission miniatures à double dépôt dans le réacteur MINERVE", 2017
- Oskari Pakari (EPFL-ETH Zurich, Nuclear eng.), encadrement partagé avec G. Perret (PSI) : "Implementation of neutron noise instrumentation in current mode", 2016
Projets semestriels
- Michel Saliba (EPFL-ETH Zurich, Nuclear eng.), encadrement partagé avec W. Monange (IRSN, France) : "Neutron correlation experiments in CROCUS using SAFFRON", 2022
- Daniel Gönczy (EPFL, Mechanics), encadrement avec T. Ligonnet "Development and modelling of a conveyor device for activity mapping", 2021
- Thomas Ligonnet (EPFL-ETH Zurich, Nuclear eng.), encadrement partagé avec A. Laureau (CNRS) : "Preliminary analysis of the PETALE program and comparison to simulations", 2021
- Roxane Oesterle (EPFL, Physique), en collaboration avec l'IRA (CHUV), encadrement par Thierry Buchillier : "In-Situ Gamma Spectroscopy with HPGe", 2020
- Edoardo Brunetto, encadrement avec F. Vitullo : "Validation of the Serpent 2 model for the CARROUSEL facility", 2019
- Roxane Oesterle, en collaboration avec l'IRA (CHUV), encadrement par Nicolas Cherbuin et Jérôme Damet : "Extremity Dosimetry: Effect of Plexiglass Syringe Shield on Ga-68, and TLD-100 v.s. MCP-Oeil Results", 2019
- Felix Grimberg, encadrement par D. Siefman : "The Unscented Kalman Filter: Introduction and Application to Point Reactor Kinetics", 2019
- Bert Vandereydt (EPFL-ETH Zurich, Nuclear eng.), encadrement avec O. Pakari : "Modelling of gamma detectors for CROCUS using Monte Carlo transport codes", 2018
- Felix Von Rütte, encadrement avec S. Radman : "Design of a cloud chamber", 2017
- Isabelle Tanseri, encadrement avec D. Siefman : "Measurement of concrete neutron activation in the cavity of the CROCUS reactor", 2017
- Harrison Gavotto, encadrement avec D. Siefman : "Neutron activation in the cavity of the CROCUS reactor" 2015-2016 printemps,
- Adrien Theler (EPFL, Physique) : "Gamma characteristion of the LOTUS cavity", 2016
- Adrien Theler (EPFL, Physique) : "Development of an experimental channel for CROCUS", 2015
- Oskari Pakari (EPFL-ETH Zurich, Nuclear eng.), encadrement avec G. Perret (PSI) : "Neutron noise measurements in current mode", 2015
Stages
- Jean-Baptiste Valentin (EPFL, Physique), encadrement avec T. Mager et T. Ligonnet: "Test of activation dosimeters with unconventional shapes for position sensitive measurements", 06-07.2022
- Philippe Simbsler (Phelma, France), encadrement avec T. Ligonnet : "Study of the spatial dependence of the neutron spectrum in CROCUS", 05-07.2022
- François Guillier (Ecole Normale Supérieure Paris-Saclay, France), encadrement avec K. Ambrožič : "Investigation of the fission matrix methodology for the analysis of the SAFFRON experiments", 04.2021-07.2021
- Jihyo Seo (KONICOF exchange program, South Korea), 08.2019-01.2020
- Alexandre Colin (Phelma, France), encadrement avec O. Pakari : "Characterisation of the neutron activation of the EPFL CROCUS reactor's structures", 05.2018-08.2018
- Vincent Chaussonnet (EPF Montpellier, France), encadrement avec O. Pakari et D. Siefman : "Assessment of the activation of the concrete cavity of the experimental reactor CROCUS", 09.2017-12.2017
- Michael Chadwick (McGill University, Canada) : "Mechanical modeling of the LOTUS cavity and design of experimental setup", 05.2016-08/2016
- Michael Chadwick (McGill University, Canada) : "Mechanical modeling of the CROCUS reactor", 05.2015-08.2015
Cours
Radiation and reactor experiments
Le cours a pour but principal de familiariser les étudiant-e-s aux différentes techniques expérimentales de détection des radiations ionisantes et aux mesures expérimentales sur un réacteur nucléaire. Les mesures sont effectuées sur CROCUS, le réacteur de l'EPFL.