M. De Cian
A5068534486- 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
- Computational Physics and Python Applications
- Medical Imaging Techniques and Applications
- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Atomic and Subatomic Physics Research
- Nuclear physics research studies
- Distributed and Parallel Computing Systems
- Stochastic processes and statistical mechanics
- Cosmology and Gravitation Theories
- Radiation Detection and Scintillator Technologies
- International Science and Diplomacy
- Advanced NMR Techniques and Applications
- Markov Chains and Monte Carlo Methods
- Cold Atom Physics and Bose-Einstein Condensates
- Advanced Data Storage Technologies
- Astrophysics and Cosmic Phenomena
- Scientific Computing and Data Management
- Geophysics and Gravity Measurements
European Organization for Nuclear Research
2014-2025
Heidelberg University
2013-2025
École Polytechnique Fédérale de Lausanne
2012-2024
University of Zurich
2010-2023
Tsinghua University
2020-2023
Université Paris-Saclay
2021
Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
2021
Institut National de Physique Nucléaire et de Physique des Particules
2013-2021
Centre National de la Recherche Scientifique
2013-2021
University of Chinese Academy of Sciences
2020
The LHCb Outer Tracker is a gaseous detector covering an area of 5 × 6 m2 with 12 double layers straw tubes. performance the presented based on data LHC Run 2 running period from 2015 and 2016. Occupancies operational experience for collected in pp, pPb PbPb collisions are described. An updated study ageing effects showing no signs gain deterioration or other radiation damage effects. In addition several improvements respect to 1 taking introduced. A novel real-time calibration...
Particle physics has an ambitious and broad experimental programme for the coming decades. This requires large investments in detector hardware, either to build new facilities experiments, or upgrade existing ones. Similarly, it commensurate investment R&D of software acquire, manage, process, analyse shear amounts data be recorded. In planning HL-LHC particular, is critical that all collaborating stakeholders agree on goals priorities, efforts complement each other. this spirit, white paper...
The LHCb collaboration has redesigned its trigger to enable the full offline detector reconstruction be performed in real time. Together with real-time alignment and calibration of detector, a software infrastructure make persistent high-level physics objects produced during processing, this redesign enabled widespread deployment analysis Run 2. We describe design 2 reconstruction, present data-driven performance measurements for representative sample LHCb's programme.
An evolved real-time data processing strategy is proposed for high-energy physics experiments, and its implementation at the LHCb experiment presented. The reduced event model allows not only signal candidate firing trigger to be persisted, as previously available, but also an arbitrary set of other reconstructed or raw objects from event. This higher rates a given output bandwidth, when compared traditional saving full detector each trigger, whilst accommodating inclusive triggers...
A bstract We propose an approach for measuring the moments of hadronic invariant mass distribution in semileptonic $$ {B}_s^0 <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>B</mml:mi> <mml:mi>s</mml:mi> <mml:mn>0</mml:mn> </mml:msubsup> </mml:math> meson decays using a sum-of-exclusive technique. Using present and foreseen knowledge about exclusive decays, we estimate uncertainties on kinematic distribution. Semileptonic can be described, as their B 0...
The LHCb experiment at CERN is undergoing an upgrade in preparation for the Run 3 data taking period of LHC. As part this trigger moving to a fully software implementation operating LHC bunch crossing rate. We present evaluation CPU-based and GPU-based first stage High Level Trigger. After detailed comparison both options are found be viable. This document summarizes performance details these options, outcome which has led choice as baseline.
Realizing the physics programs of planned and upgraded high-energy (HEP) experiments over next 10 years will require HEP community to address a number challenges in area software computing. For this reason, has engaged planning process past two years, with objective identifying prioritizing research development required enable generation detectors fulfill their full potential. The aim is produce Community White Paper which describe strategy roadmap for computing 2020s. topics event...
We present an alternative implementation of the Kalman filter employed for track fitting within LHCb experiment. It uses simple parametrizations extrapolation particle trajectories in field dipole magnet and effects multiple scattering detector material. A speedup more than a factor four is achieved while maintaining quality estimated quantities. This could be used purely software-based trigger upgrade.
Starting in 2022, the upgraded LHCb detector is collecting data with a pure software trigger. In its first stage, reducing rate from 30MHz to about 1MHz, GPUs are used reconstruct and trigger on B D meson topologies high-pT objects event. second CPU farm full event perform candidate selections, which persisted for offline use an output of 10GB/s. Fast processing, flexible custom-designed structures tailored SIMD architectures efficient storage intermediate at various steps processing...
The LHCb detector at the LHC is a general purpose in forward region with focus on reconstructing decays of c- and b-hadrons. For Run II LHC, new trigger strategy real-time reconstruction, alignment calibration was employed. This made possible by implementing an offline-like track reconstruction high level trigger. However, ever increasing need for higher throughput move to parallelism CPU architectures last years necessitated use vectorization techniques achieve desired speed more extensive...