G. Grenier
A5103746805- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Computational Physics and Python Applications
- Cosmology and Gravitation Theories
- Neutrino Physics Research
- Building energy efficiency and sustainability
- Radiation Detection and Scintillator Technologies
- Renewable energy and sustainable power systems
- Black Holes and Theoretical Physics
- Particle Accelerators and Free-Electron Lasers
- Astrophysics and Cosmic Phenomena
- Medical Imaging Techniques and Applications
- Distributed and Parallel Computing Systems
- International Science and Diplomacy
- Stochastic processes and statistical mechanics
- Gamma-ray bursts and supernovae
- Nuclear Physics and Applications
- Cold Fusion and Nuclear Reactions
- Nuclear reactor physics and engineering
- Muon and positron interactions and applications
- Quantum, superfluid, helium dynamics
- Algorithms and Data Compression
Institute of Nuclear Physics of Lyon
2016-2025
Institut de Physique des 2 Infinis de Lyon
2019-2025
University of Antwerp
2024
Institute of High Energy Physics
2024
A. Alikhanyan National Laboratory
2024
Universidade do Estado do Rio de Janeiro
2024
Centre National de la Recherche Scientifique
2014-2023
Université Claude Bernard Lyon 1
1999-2023
Institut National de Physique Nucléaire et de Physique des Particules
2016-2022
Institut de Physique
2020
Abstract The CALICE collaboration is developing highly granular electromagnetic and hadronic calorimeters for detectors at future energy frontier electron-positron colliders. After successful tests of a physics prototype, technological prototype the Analog Hadron Calorimeter has been built, based on design construction techniques scalable to collider detector. consists steel absorber structure active layers small scintillator tiles that are individually read out by directly coupled SiPMs....
There are many possibilities for new physics beyond the Standard Model that feature non-standard Higgs sectors. These may introduce sources of CP violation, and there be mixing between multiple bosons or other scalar bosons. Alternatively, a composite state, even no at all. scenarios have important implications collider as well cosmology, understanding their phenomenology is essential full comprehension electroweak symmetry breaking. This report discusses most relevant theories which go its...
In view of the High Luminosity upgrade CERN LHC, forward CMS Muon spectrometer will be extended with two new stations improved Resistive Plate Chambers (iRPC) covering pseudorapidity range from 1.8 to 2.4. Compared present RPC system, gap thickness is reduced lower avalanche charge, and an innovative 2D strip readout geometry proposed. These improvements allow iRPC detector cope higher background rates. A Front-End-Board (FEB) designed signals a threshold as low 30 fC integrated Time Digital...
Abstract The CMS detector, including its muon system, has been operating at the CERN LHC in increasingly challenging conditions for about 15 years. detector was designed to provide excellent triggering and track reconstruction muons produced proton–proton collisons an instantaneous luminosity ( $$\mathcal {L}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>L</mml:mi> </mml:math> ) of $$1 \times 10^{34}$$ <mml:mrow> <mml:mn>1</mml:mn> <mml:mo>×</mml:mo> <mml:msup>...
A large prototype of 1.3m3 was designed and built as a demonstrator the semi-digital hadronic calorimeter (SDHCAL) concept proposed for future ILC experiments. The is sampling 48 units. Each unit an active layer made 1m2 Glass Resistive Plate Chamber(GRPC) detector placed inside cassette whose walls are stainless steel. contains also electronics used to read out GRPC detector. lateral granularity provided by pick-up pads 1cm2 each. cassettes inserted into self-supporting mechanical structure...
Abstract The Compact Muon Solenoid (CMS) experiment will undergo phase-II upgrade to enhance the capacity of detectors in High-Luminosity Large Hadron Collider era. An important extension involves installation Improved Resistive Plate Chambers (iRPC) most forward part endcap muon system. iRPC detector addresses efficiency drop experienced by current CMS trigger system for single triggers high pseudorapidity region. It features a double-ended read-out method, allowing determination hit...
The CALICE Semi-Digital Hadronic CALorimeter (SDHCAL) prototype using Glass Resistive Plate Chambers as a sensitive medium is the first technological of family high-granularity calorimeters developed by collaboration to equip experiments future leptonic colliders. It was exposed beams hadrons, electrons and muons several times in CERN PS SPS beamlines between 2012 2018. We present here new method particle identification within SDHCAL Boosted Decision Trees (BDT) applied data collected 2015....
We report on a systematic study of double-gap and four-gap phenolic resistive plate chambers (RPCs) for future high-η RPC triggers in the CMS. In present study, we constructed real-sized RPCs with gap thicknesses 1.6 0.8 mm, respectively, 2-mm-thick high-pressure-laminated (HPL) plates. examined prototype cosmic rays 100 GeV muons provided by SPS H4 beam line at CERN. applied maximum gamma rates 1.5 kHz cm-2 137Cs sources Korea University GIF++ irradiation facility installed to examine rate...
The CALICE collaboration is developing highly granular calorimeters optimized for Particle Flow Algorithms (PFA). After having demonstrated the potential of these in a first set prototypes, next generation prototypes under development that addresses full system requirements such as compactness and low power consumption. Improvements on analysis reconstruction electromagnetic hadronic showers discussed along with tests data performance Paradigm.
The SDHCAL technological prototype is a $1 \times 1 1.3$ m$^3$ high-granularity Semi-Digital Hadronic CALorimeter using Glass Resistive Plate Chambers as sensitive medium. It one of the two HCAL options considered by ILD Collaboration to be proposed for detector future International Linear Collider project. made up 50 GRPC detectors m$^2$ size and 3 mm thickness each with an embedded semi-digital electronics readout that autotriggering power-pulsed. finely segmented into pads cm$^2$....
Abstract The CALICE Semi-Digital Hadron Calorimeter technological prototype completed in 2011 is a sampling calorimeter using Glass Resistive Plate Chamber (GRPC) detectors as the active medium. This technology one of two options proposed for hadron International Large Detector Linear Collider. was exposed 2015 to beams muons, electrons, and pions different energies at CERN Super Proton Synchrotron. use this future experiments requires reliable simulation its response that can predict...
This note summarizes results on leptoquarks and technicolor searches at the Tevatron with a more particular focus recent ones. Results leptoquark pair production decays to q{nu}, qe, q{mu} q{tau} are given for an analysed luminosity up 5.2 fb{sup -1}. In most analyses, both decay identically leading signatures of jets missing transverse momentum or charged leptons. Technicolor emphasis technirho decaying toWZ in trilepton signature aW technipion.