A. Lai

ORCID: 0000-0003-1633-0496
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About
Contact & Profiles
Research Areas
  • Particle physics theoretical and experimental studies
  • Quantum Chromodynamics and Particle Interactions
  • High-Energy Particle Collisions Research
  • Particle Detector Development and Performance
  • Neutrino Physics Research
  • Dark Matter and Cosmic Phenomena
  • Radiation Detection and Scintillator Technologies
  • Black Holes and Theoretical Physics
  • Computational Physics and Python Applications
  • Particle Accelerators and Free-Electron Lasers
  • CCD and CMOS Imaging Sensors
  • Medical Imaging Techniques and Applications
  • Atomic and Subatomic Physics Research
  • Superconducting Materials and Applications
  • Nuclear physics research studies
  • Advanced NMR Techniques and Applications
  • Advancements in PLL and VCO Technologies
  • Stochastic processes and statistical mechanics
  • Electron Spin Resonance Studies
  • Distributed and Parallel Computing Systems
  • Particle accelerators and beam dynamics
  • Advanced Data Storage Technologies
  • Cosmology and Gravitation Theories
  • Metabolomics and Mass Spectrometry Studies
  • Metal complexes synthesis and properties

Istituto Nazionale di Fisica Nucleare, Sezione di Cagliari
2016-2025

University of Cagliari
1996-2025

University of Trento
2022

Istituto Nazionale di Fisica Nucleare, Sezione di Padova
2022

Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara
2022

Istituto Nazionale di Fisica Nucleare, Sezione di Torino
2022

Istituto Nazionale di Fisica Nucleare, Trento Institute for Fundamental Physics And Applications
2022

Istituto Nazionale di Fisica Nucleare
2006-2020

Polytechnic University of Turin
2020

Centro Brasileiro de Pesquisas Físicas
2013-2019

A new general purpose fixed target facility is proposed at the CERN SPS accelerator which aimed exploring domain of hidden particles and make measurements with tau neutrinos. Hidden are predicted by a large number models beyond Standard Model. The high intensity 400~GeV beam allows probing wide variety containing light long-lived exotic masses below ${\cal O}$(10)~GeV/c$^2$, including very weakly interacting low-energy SUSY states. experimental programme capable being extended in future,...

10.48550/arxiv.1504.04956 preprint EN other-oa arXiv (Cornell University) 2015-01-01

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...

10.1088/1748-0221/8/02/p02022 article EN Journal of Instrumentation 2013-02-27

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%.

10.1088/1748-0221/8/10/p10020 article EN cc-by Journal of Instrumentation 2013-10-17

We study the behavior of string tension in SU(3) lattice pure-gauge theory close to deconfining critical point. find very large correlation lengths, increasing with size. This result is strongly suggestive a second-order phase transition, and excludes presence strong first-order transition.

10.1103/physrevlett.61.1545 article EN Physical Review Letters 1988-10-03

10.1016/s0168-9002(02)00515-6 article EN Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 2002-08-01

In the last years, high-resolution time tagging has emerged as tool to tackle problem of high-track density in detectors next generation experiments at particle colliders. Time resolutions below 50ps and event average repetition rates tens MHz on sensor pixels having a pitch 50$\mu$m are typical minimum requirements. This poses an important scientific technological challenge development sensors processing electronics. The TIMESPOT initiative (which stands for TIME SPace real-time Operating...

10.1088/1748-0221/15/09/p09029 article EN cc-by Journal of Instrumentation 2020-09-21

Abstract In this paper the results of a beam test characterization campaign 3D trench silicon pixel sensors are presented. A time resolution in order 10 ps was measured both for non-irradiated and irradiated up to fluence 2.5 × 16 1 MeV n eq cm −2 . This feature detection efficiency close 99% make one best candidates 4D tracking detectors High-Energy-Physics experiments.

10.1088/1748-0221/18/01/c01051 article EN Journal of Instrumentation 2023-01-01

We present the first characterization results of Timespot1, an ASIC designed in CMOS 28 nm technology, featuring a $32 \times 32$ pixel matrix with pitch $55 ~ \mu m$. Timespot1 is small-size prototype, conceived to readout fine-pitch pixels single-hit time resolution below $50 ps_\text{rms}$ and input rates several hundreds kilohertz per pixel. Such experimental conditions will be typical next generation high-luminosity collider experiments, from LHC run5 beyond. Each includes charge...

10.1088/1748-0221/18/03/p03034 article EN Journal of Instrumentation 2023-03-01

CdSe/CdS colloidal nanocrystals are members of a novel class light-emitting nanoparticles with remarkable optical properties such as suppressed fluorescence blinking and enhanced emission from multiexciton states. These have been linked to the suppression non-radiative Auger recombination. In this work we employ ultrafast spectroscopy techniques identify signatures neutral charged excitonic multiexcitonic We show that recombination biexcitons is not suppressed, while observe gain amplified...

10.1088/0957-4484/23/1/015201 article EN Nanotechnology 2011-12-08

10.1016/j.nima.2020.164491 article EN publisher-specific-oa Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 2020-08-03

For the next generation of vertex detectors, accurate measurement charged particle timing at pixel level is considered to be ultimate solution in experiments operating very high instantaneous luminosities. This work shows that 55 μm × µm wide 150 thick 3D trench-type pixels, developed by TimeSPOT Collaboration, achieve a time resolution close 10 ps with minimum ionizing particles while maintaining detection efficiency 100% when operated tilt angle larger than 10° from normal incidence....

10.3389/fphy.2023.1117575 article EN cc-by Frontiers in Physics 2023-02-08

Among various silicon sensor technologies, 3D sensors demonstrate significant potential for applications requiring exceptional radiation hardness and intrinsic high time resolutions. Silicon pixel with columnar-type electrodes are already operational within the ATLAS experiment, serving in previous Inner B-Layer (IBL) upcoming Tracking (ITk) detectors. Concurrently, advancements driven by next-generation LHCb VELO detector have led to development of fast-timing trench INFN TimeSPOT project,...

10.3390/s25030926 article EN cc-by Sensors 2025-02-04

We describe APE-100, a SIMD, modular parallel processor architecture for large scale scientific computation. The largest configuration that will be implemented in the present design deliver peak speed of 100 Gflops. This performance is, instance, required high precision computations Quantum Chromo Dynamics, which APE-100 is very well suited.

10.1142/s0129053393000268 article EN International Journal of High Speed Computing 1993-12-01
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