G. Passaleva
A5082409908- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Black Holes and Theoretical Physics
- Computational Physics and Python Applications
- Particle Accelerators and Free-Electron Lasers
- Medical Imaging Techniques and Applications
- Cosmology and Gravitation Theories
- Superconducting Materials and Applications
- Radiation Detection and Scintillator Technologies
- Atomic and Subatomic Physics Research
- Nuclear physics research studies
- Nuclear Physics and Applications
- Distributed and Parallel Computing Systems
- Stochastic processes and statistical mechanics
- Particle accelerators and beam dynamics
- Astrophysics and Cosmic Phenomena
- CCD and CMOS Imaging Sensors
- Diamond and Carbon-based Materials Research
- Markov Chains and Monte Carlo Methods
- International Science and Diplomacy
- Cold Atom Physics and Bose-Einstein Condensates
Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
2016-2025
University of Maryland, College Park
2003-2023
Istituto Nazionale di Fisica Nucleare
2011-2022
European Organization for Nuclear Research
2004-2021
Petersburg Nuclear Physics Institute
2012-2021
University of Chinese Academy of Sciences
2020
Tsinghua University
2020
Peking University
2020
State Key Laboratory of Nuclear Physics and Technology
2020
Central China Normal University
2014-2020
The performance of the LHCb Muon system and its stability across full 2010 data taking with LHC running at ps = 7 TeV energy is studied. optimization detector setting time calibration performed first collisions delivered by described. Particle rates, measured for wide range luminosities beam operation conditions experienced during run, are compared values expected from simulation. space alignment detectors, chamber efficiency, resolution cluster size evaluated. found to be as specifications...
The design and construction of the silicon strip microvertex detector (SMD) L3 experiment at LEP are described. We present sensors, readout electronics, data acquisition system, mechanical assembly support, displacement monitoring systems radiation system recently installed double-sided, double-layered SMD. This utilizes novel sophisticated techniques for its readout.
The performance of the muon identification in LHCb is extracted from data using muons and hadrons produced J/ψ → μ+μ−, Λ0 pπ− D⋆+→π+D0(K−π+) decays. procedure based on pattern hits chambers. A momentum dependent binary requirement used to reduce probability be misidentified as level 1%, keeping efficiency range 95-98%. As further refinement, a likelihood built for non-muon hypotheses. Adding this that provides total at 93%, hadron misidentification probabilities are below 0.6%.
Abstract We present first results obtained with a prototype 4D-tracking demonstrator, using sensors and electronics developed within the TimeSPOT project, tested on positive charged pion beam at CERN SPS. The setup consists of five small tracking layers in row, having area about 3 mm 2 each, three which equipped 3D-trench silicon two 3D-column diamond sensors. are then read-out by KC705 Xilinx board PC. describe demonstrator structure operation illustrate preliminary its capabilities.
The muon detector of LHCb, which comprises 1368 multi-wire-proportional-chambers (MWPC) for a total area 435 m2, is the largest instrument its kind exposed to such high-radiation environment. In nine years operation, from 2010 until 2018, we did not observe appreciable signs ageing in terms reduced performance. However, during long period, many chamber gas gaps suffered HV trips. Most trips were due Malter-like effects, characterised by appearance local self-sustained high currents,...
Diamond sensors provide a promising radiation hard solution to the challenges posed by future experiments at hadron machines. A 3D geometry with thin columnar resistive electrodes orthogonal diamond surface, obtained laser nanofabrication, is expected significantly better time resolution respect extensively studied planar sensors. We report on development, production and characterisation of innovative achieving 30% improvement in both space from previous generation. This first complete...
The status of the Silicon Microvertex Detector (SMD) and its installation into LEP-I.3experiment are presented, highiighting novel features sophisticated techniques.Preliminary results based on 1993 data given compared with Monte Carlo predictions, to understand detector performances tracking capabilities.
In this work we describe an algorithm for muon track reconstruction in the LHCb Muon System. The is based on a recursive neural network known as Hopfield Network. particularly suitable harsh environment, where expected number of hits per event detector order 2–3*10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> . has been tested successfully cosmic ray tracks, collected during commissioning phase System, and simulated proton-proton...
ELI-NP is an European Research Infrastructure that will provide a monochromatic, high brilliance gamma beam with tunable energy up to 19.5 MeV. The time structure of the consists 32 intensity bunches separated by interval 16 ns and delivered at repetition rate 100 Hz. In order match such unprecedented specifications, specific devices techniques have been developed measure monitor parameters during commissioning operational phase. This paper presents overview characterization system,...
A Gamma Beam System (GBS), designed by the EuroGammaS collaboration, will be implemented for ELI-NP facility in Magurele, Romania. The deliver an intense gamma beam, obtained collimatio of emerging radiation from inverse Compton interaction. beam energy range span 0.2 up to 19.5 MeV with unprecedented performances terms brilliance, photon flux and bandwidth. For characterisation during commissioning normal operation, a full detection system has been measure spectrum, intensity, space time...
We present a study on the radiation tolerance and timing properties of 3D diamond detectors fabricated by laser engineering synthetic Chemical Vapor Deposited (CVD) plates. evaluated hardness sensors using Charge Collection Efficiency (CCE) measurements after neutron fluences up to 1016 n/cm2 (1 MeV equivalent.) The is significantly higher when moving from standard planar architecture increases with increasing density columnar electrodes. Also, maximum applicable bias voltage before electric...