D. Chamont
A5073640043- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Neutrino Physics Research
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Black Holes and Theoretical Physics
- Particle Accelerators and Free-Electron Lasers
- Distributed and Parallel Computing Systems
- Computational Physics and Python Applications
- Scientific Computing and Data Management
- Atomic and Subatomic Physics Research
- Superconducting Materials and Applications
- Nuclear physics research studies
- Medical Imaging Techniques and Applications
- Advanced Data Storage Technologies
- Astrophysics and Cosmic Phenomena
- Numerical Methods and Algorithms
- Stochastic processes and statistical mechanics
- Parallel Computing and Optimization Techniques
- advanced mathematical theories
- International Science and Diplomacy
- Cosmology and Gravitation Theories
- Advanced NMR Techniques and Applications
- Radiative Heat Transfer Studies
Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
2020-2024
Université Paris-Saclay
2017-2021
Centre National de la Recherche Scientifique
2008-2021
Institut National de Physique Nucléaire et de Physique des Particules
2017-2021
Université Paris-Sud
2017-2020
GANIL
2017-2019
Centro Brasileiro de Pesquisas Físicas
2016-2019
Universidade Federal do Rio de Janeiro
2019
Centre Hospitalier d'Orsay
2019
Laboratoire Leprince-Ringuet
2005-2018
The energy resolution of the barrel part CMS Electromagnetic Calorimeter has been studied using electrons 20 to 250 GeV in a test beam. incident electron's was reconstructed by summing measured arrays 3 × or 5 channels. There no significant amount correlated noise observed within these arrays. For at centre crystals, mean stochastic term be 2.8% and constant 0.3%. electrons' which is contained array depends on its position incidence. variation containment with corrected for distribution...
We report on a measurement of the flavor-specific $B^0_s$ lifetime and $D^-_s$ using proton-proton collisions at center-of-mass energies 7 8 TeV, collected by LHCb experiment corresponding to 3.0 $fb^{−1}$ integrated luminosity. Approximately 407 000 $B^0_s \to D^{(*)-}_s \mu^+\nu_{\mu}$ decays are partially reconstructed in $K^+ K^- \pi^- \mu^+$ final state. The natural widths determined using, as reference, kinematically similar same resulting differences between $B^0$ mesons $D^-$...
Lot of efforts have been devoted by ATLAS and CMS teams to improve the quality LHC events analysis with Matrix Element Method (MEM). Up now, very few implementations try face up huge computing resources required this method. We propose here a highly parallel version, combining MPI OpenCL, which makes MEM exploitation reachable for whole datasets moderate cost. In article, we describe status two software projects under development, one focused on physics computing. also showcase their...
Abstract The long-term sustainability of the high-energy physics (HEP) research software ecosystem is essential to field. With new facilities and upgrades coming online throughout 2020s, this will only become increasingly important. Meeting challenge requires a workforce with combination HEP domain knowledge advanced skills. required skills fall into three broad groups. first fundamental generic engineering (e.g., Unix, version control, C++, continuous integration). second domain-specific...
The AGATA project aims at building a 4π gamma-ray spectrometer consisting of 180 germanium crystals, each crystal being divided into 36 segments. Each gamma ray produces an electrical signal within several neighbouring segments, which is compared with data base reference signals, enabling to locate the interaction. This step called Pulse-Shape Analysis (PSA). In execution chain leading PSA, we observe successive conversions: original 14-bit integers given by electronics are finally converted...
C ++ is a vital part of particle physics as it allows for high level abstractions while offering state the art performance. In this article we will first introduce 20 concepts , major C++ usability enhancement. We then Kiwaku, new multidimensional arrays library taking advantage most advanced features at time writing, providing user with intuitive API retaining Multidimensional are basic building block many scientific experiments and simulations, no exception. Using examples borrowed from...
The High Performance Computing (HPC) domain aims to optimize code use the latest multicore and parallel technologies including specific processor instructions. In this computing framework, portability reproducibility are key concepts. A way handle these requirements is Linux containers. These "light virtual machines" allow users encapsulate applications within its environment in processes. Containers have been recently highlighted because they provide multi-infrastructure environnement for...
The High Performance Computing (HPC) domain aims to optimize code in order use the latest multicore and parallel technologies including specific processor instructions. In this computing framework, portability reproducibility are key concepts. A way handle these requirements is Linux containers. These “light virtual machines” allow encapsulate applications within its environment processes. Containers have been recently rediscovered due their abilities provide both multi-infrastructure...
Abstract The aim of this work is to compare the performance and ease programming various data transfer strategies provided by SYCL 2020: buffers/accessors on one hand different storage types exposed Unified Shared Memory (USM) other hand. We measured relative USM exclusively located either host ( ) or device ), automatically managed moved shared ). also tried quantify impact formatting in a GPU-friendly manner as opposed using regular pointer-based structure which C++ allocator was replaced...
Like many HEP researchers, the members of Fermi collaboration have chosen to store their experiment data within ROOT trees. A frequent activity such physicists is tuning selection criteria which define events interest, thus cutting and pruning trees so extract all linked those specific physical events. It rather straightforward write a script skim single kind data, for example raw measurements LAT detector. This proves be trickier if one wants process also some simulated or analysis at same...