D. Boumediene
A5053613045- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Quantum Chromodynamics and Particle Interactions
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Computational Physics and Python Applications
- Neutrino Physics Research
- Radiation Detection and Scintillator Technologies
- Black Holes and Theoretical Physics
- Astrophysics and Cosmic Phenomena
- Distributed and Parallel Computing Systems
- Medical Imaging Techniques and Applications
- Superconducting Materials and Applications
- Advanced Data Storage Technologies
- Atomic and Subatomic Physics Research
- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Big Data Technologies and Applications
- Radiation Effects in Electronics
- Digital Radiography and Breast Imaging
- Muon and positron interactions and applications
- Structural Analysis of Composite Materials
- Nuclear reactor physics and engineering
- SARS-CoV-2 detection and testing
Institut National de Physique Nucléaire et de Physique des Particules
2014-2025
Centre National de la Recherche Scientifique
2016-2025
Université Clermont Auvergne
2016-2025
Clermont Université
2013-2025
Laboratoire de Physique Corpusculaire
2015-2024
A. Alikhanyan National Laboratory
2024
SR Research (Canada)
2024
Federación Española de Enfermedades Raras
2024
University of California, Santa Cruz
2017-2024
The University of Adelaide
2014-2023
The CALICE collaboration is studying the design of high performance electromagnetic and hadronic calorimeters for future International Linear Collider detectors. For calorimeter, current baseline choice a granularity sampling calorimeter with tungsten as absorber silicon detectors sensitive material. A ``physics prototype'' has been constructed, consisting thirty layers. Each layer an active area 18 × cm2 pad size 1 cm2. thickness totals 24 radiation lengths. It exposed in 2006 2007 to...
The ILD detector is proposed for an electron-positron collider with collision centre-of-mass energies from 90~\GeV~to about 1~\TeV. It has been developed over the last 10 years by international team of scientists goal to design and eventually propose a fully integrated detector, primarily International Linear Collider, ILC. In this report fundamental ideas concepts behind are discussed technologies needed realisation reviewed. document starts short review science goals ILC, how can be...
The CALICE Semi-Digital Hadronic Calorimeter (SDHCAL) prototype, built in 2011, was exposed to beams of hadrons, electrons and muons two short periods 2012 on different beam lines the CERN SPS. prototype with its 48 active layers, made Glass Resistive Plate Chambers their embedded readout electronics, run triggerless power-pulsing mode. performance SDHCAL during test found be very satisfactory an efficiency exceeding 90% for almost all layers. A linear response (within 5%) a good energy...
The High Granularity Timing Detector (HGTD) will be installed in the ATLAS experiment to mitigate pile-up effects during Luminosity (HL) phase of Large Hadron Collider (LHC) at CERN. Low Gain Avalanche Detectors (LGADs) provide high-precision measurements time arrival particles HGTD, improving particle-vertex assignment. To cope with high-radiation environment, LGADs have been optimized by adding carbon gain layer, thus reducing acceptor removal rate after irradiation. Performances several...
Abstract This paper presents the design and characterisation of a front-end prototype ASIC for ATLAS High Granularity Timing Detector, which is planned High-Luminosity phase LHC. prototype, called ALTIROC1, consists 5 × 5-pad matrix contains analog part single-channel readout (preamplifier, discriminator, two TDCs SRAM). Two preamplifier architectures (transimpedance voltage) were implemented tested. The was characterised both alone as module when connected to array LGAD sensors. In...
This article describes the Laser calibration system of ATLAS hadronic Tile Calorimeter that has been used during run 1 LHC . First, stability associated readout electronics is studied. It found to be stable with variations smaller than 0.6 %. Then, method developed compute constants, correct for gain calorimeter photomultipliers, described. These constants were determined a statistical uncertainty 0.3 % and systematic 0.2 central part 0.5 end-caps. Finally, detection correction timing...
The increase of the particle flux at HL-LHC with instantaneous luminosities up to L=7.5 × 10 34 cm −2 s −1 will have a severe impact on ATLAS detector reconstruction and trigger performance. end-cap forward region where liquid Argon calorimeter has coarser granularity inner tracker poorer momentum resolution be particularly affected. A High Granularity Timing Detector installed in front calorimeters help charged-particle luminosity measurement. This low angle is introduced augment new...
This article reports the laser calibration of hadronic Tile Calorimeter ATLAS experiment in LHC Run 2 data campaign. The upgraded Laser II system is described. was commissioned during first Long Shutdown, exhibiting a stability better than 0.8% for light monitoring. methods employed to derive detector factors with from runs are also detailed. These allowed correct response fluctuations 9852 photomultiplier tubes total uncertainty 0.5% plus luminosity-dependent sub-dominant term. Finally, we...
The high granularity of the CALICE Semi-Digital Hadronic CALorimeter (SDHCAL) provides capability to reveal track segments present in hadronic showers. These are then used as a tool probe behaviour active layers situ, better reconstruct energy these showers and also distinguish them from electromagnetic ones. In addition, comparison data simulation helps discriminate among different shower models simulation. To extract recorded SDHCAL, Hough Transform is after being adapted presence dense...
Abstract In the past years, it has been observed at several beam test campaigns that irradiated LGAD sensors break with a typical star shaped burn mark when operated voltages much lower than those which they were safely during laboratory tests. The study presented in this paper was designed to determine safe operating voltage these can withstand. Many from various producers tested two facilities, DESY (Hamburg) and CERN-SPS (Geneva), as part of ATLAS High Granularity Timing Detector (HGTD)...
This paper presents results obtained with the combined CALICE Scintillator Electromagnetic Calorimeter, Analogue Hadronic Calorimeter and Tail Catcher & Muon Tracker, three high granularity scintillator-silicon photomultiplier calorimeter prototypes. The response of system to pions momenta between 4 GeV/c 32 is analysed, including average energy response, resolution, longitudinal shower profiles. Two techniques are applied reconstruct initial particle from measured depositions; a standard...
The CALICE Semi-Digital Hadron Calorimeter (SDHCAL) technological prototype is a sampling calorimeter using Glass Resistive Plate Chamber detectors with three-threshold readout as the active medium. This technology one of two options proposed for hadron International Large Detector Linear Collider. was exposed to beams muons, electrons and pions different energies at CERN Super Proton Synchrotron. To be able study performance such in future experiments it important ensure reliable simulation...
The CALICE [1] Si-W electromagnetic calorimeter [2] has been tested with low energy electron beams at DESY (1 to 6 GeV) in May 2006, as well higher electrons (6 45 CERN August and October 2006. large amount of high quality data allows the characterisation ECAL physics performance.
The Tile Calorimeter (TileCal) is the central section of hadronic calorimeter ATLAS experiment. TileCal provides important information for reconstruction hadrons, jets, decays tau leptons and missing transverse energy. This sampling uses iron plates as absorber scintillating tiles active medium. light produced by passage charged particles transmitted means wavelength shifting fibers to photomultiplier tubes (PMTs). readout segmented into about 5000 cells (longitudinally transversally), each...
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....
The ATLAS detector was designed and built to study proton-proton collisions produced at the LHC centre-of-mass energies up 14 TeV instantaneous luminosities $10^{34}cm^{−2}s^{−1}$. A Liquid Argon-lead sampling (LAr) calorimeter is employed as electromagnetic hadronic calorimeters, except in barrel region, where a scintillator-steel (TileCal) used calorimeter. This presentation gives first an overview of operation data quality, well achieved performances calorimetry system. Additionally...
This paper presents results obtained with the combined CALICE Scintillator Electromagnetic Calorimeter, Analogue Hadronic Calorimeter and Tail Catcher & Muon Tracker, three high granularity scintillator-SiPM calorimeter prototypes. The response of system to pions momenta between 4 GeV/c 32 is analysed, including energy response, resolution, longitudinal shower profiles. a software compensation technique based on weighting according hit are compared those standard linear reconstruction....
The TileCal is the hadronic calorimeter covering most central region of ATLAS experiment at LHC. It a sampling with iron plates as absorber and plastic scintillating tiles active material. scintillation light produced by passage charged particles transmitted wavelength shifting fibers to about 10,000 photomultiplier tubes (PMTs). Integrated calorimeter, there composite device that allows monitor and/or equalize signals various stages their formation. This based on signal generation from...
The ATLAS Tile Calorimeter (TileCal) is the central section of hadronic calorimeter experiment at Large Hadron Collider. It provides important information for reconstruction hadrons, jets, decays tau leptons and missing transverse energy. This sampling uses steel plates as absorber scintillating tiles active medium. Scintillating light transmitted by wavelength shifting fibres to photomultiplier tubes (PMTs) in rear girders wedge-shaped modules. Photomultiplier signals are then digitized 40...
Abstract The CALICE Semi-Digital Hadronic CALorimeter (SDHCAL) is the first technological prototype in a family of high-granularity calorimeters developed by Collaboration to equip experiments future lepton colliders. SDHCAL sampling calorimeter using stainless steel for absorber and Glass Resistive Plate Chambers (GRPC) as sensitive medium. GRPC are read out 1 cm× cm pickup pads combined multi-electronics. was exposed hadron beams both CERN PS SPS beamlines 2015 allowing test large energy...