S. Zambito
A5114376478- 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
- Computational Physics and Python Applications
- Cosmology and Gravitation Theories
- Neutrino Physics Research
- Radiation Detection and Scintillator Technologies
- Black Holes and Theoretical Physics
- Distributed and Parallel Computing Systems
- Astrophysics and Cosmic Phenomena
- Medical Imaging Techniques and Applications
- Atomic and Subatomic Physics Research
- CCD and CMOS Imaging Sensors
- Advanced Optical Sensing Technologies
- Particle Accelerators and Free-Electron Lasers
- Advanced Data Storage Technologies
- Big Data Technologies and Applications
- Superconducting Materials and Applications
- Nuclear reactor physics and engineering
- Radiation Effects in Electronics
- Particle accelerators and beam dynamics
- Digital Radiography and Breast Imaging
- Muon and positron interactions and applications
University of Geneva
2022-2025
University of Manchester
2023-2024
European Organization for Nuclear Research
2014-2024
Leibniz Institute for High Performance Microelectronics
2023-2024
Institute for High Energy Physics
2023-2024
Institute of Science and Technology
2023-2024
Atlas Scientific (United States)
2024
A. Alikhanyan National Laboratory
2024
SR Research (Canada)
2024
Federación Española de Enfermedades Raras
2024
We report the first direct observation of neutrino interactions at a particle collider experiment. Neutrino candidate events are identified in 13.6 TeV center-of-mass energy pp collision dataset 35.4 fb^{-1} using active electronic components FASER detector Large Hadron Collider. The candidates required to have track propagating through entire length and be consistent with muon charged-current interaction. infer 153_{-13}^{+12} significance 16 standard deviations above background-only...
The FASER experiment at the LHC is designed to search for light, weakly-interacting particles produced in proton-proton collisions ATLAS interaction point that travel far-forward direction. first results from a dark photons decaying an electron-positron pair, using dataset corresponding integrated luminosity of 27.0 fb−1 collected center-of-mass energy s=13.6 TeV 2022 Run 3, are presented. No events seen almost background-free analysis, yielding world-leading constraints on with couplings...
Abstract FASER, the ForwArd Search ExpeRiment, is an experiment dedicated to searching for light, extremely weakly-interacting particles at CERN's Large Hadron Collider (LHC). Such may be produced in very forward direction of LHC's high-energy collisions and then decay visible inside FASER detector, which placed 480 m downstream ATLAS interaction point, aligned with beam axis. also includes a sub-detector, ν , designed detect neutrinos LHC study their properties. In this paper, each...
The Forward Search Experiment (FASER) at CERN’s Large Hadron Collider (LHC) has recently directly detected the first collider neutrinos. Neutrinos play an important role in all FASER analyses, either as signal or background, and it is therefore essential to understand neutrino event rates. In this study, we update previous simulations present prescriptions for theoretical predictions of fluxes cross sections, together with their associated uncertainties. With these results, discuss potential...
Abstract A monolithic silicon pixel detector prototype has been produced in the SiGe BiCMOS SG13G2 130 nm node technology by IHP. The ASIC contains a matrix of hexagonal pixels with pitch approximately 100 μm. Three analog were calibrated laboratory radioactive sources and tested 180 GeV/c pion beamline at CERN SPS. detection efficiency (99.9 -0.2 +0.1 )% was measured together time resolution (36.4 ± 0.8) ps highest preamplifier bias current working point 150 μA sensor voltage 160 V. also...
A second monolithic silicon pixel prototype was produced for the MONOLITH project. The ASIC contains a matrix of hexagonal pixels with 100 {\mu}m pitch, readout by low-noise and very fast SiGe HBT frontend electronics. Wafers 50 thick epilayer 350 {\Omega}cm resistivity were used to produce fully depleted sensor. Laboratory testbeam measurements analog channels present in show that sensor has 130 V wide bias-voltage operation plateau at which efficiency is 99.8%. Although this does not...
Abstract A monolithic silicon pixel prototype produced for the MONOLITH ERC Advanced project was irradiated with 70 MeV protons up to a fluence of 1 × 10 16 n eq /cm 2 . The ASIC contains matrix hexagonal pixels 100 μm pitch, readout by low-noise and very fast SiGe HBT frontend electronics. Wafers 50 thick epilayer resistivity 350 Ωcm were used produce fully depleted sensor. Laboratory tests conducted 90 Sr source show that detector works satisfactorily after irradiation. signal-to-noise...
Abstract The time resolution of the second monolithic silicon pixel prototype produced for MONOLITH H2020 ERC Advanced project was studied using a femtosecond laser. ASIC contains matrix hexagonal pixels with 100 μm pitch, readout by low-noise and very fast SiGe HBT frontend electronics. Silicon wafers 50 thick epilayer resistivity 350 Ωcm were used to produce fully depleted sensor. At highest power density tested 2.7 W/cm 2 , laser pulses found be 45 ps signals generated 1200 electrons, 3...
Abstract The Picosecond Avalanche Detector is a multi-junction silicon pixel detector based on (NP) drift gain structure, devised to enable charged-particle tracking with high spatial resolution and picosecond time-stamp capability. It uses continuous junction deep inside the sensor volume amplify primary charge produced by ionizing radiation in thin absorption layer. signal then induced secondary charges moving thicker region. A proof-of-concept monolithic prototype, consisting of matrix...
Abstract The proof-of-concept prototype of the Picosecond Avalanche Detector, a multi-PN junction monolithic silicon detector with continuous gain layer deep in sensor depleted region, was tested beam 180 GeV pions at CERN SPS. features low noise and fast SiGe BiCMOS frontend electronics hexagonal pixels 100 μm pitch. At bias voltage 125 V, provides full efficiency average time resolution 30, 25 17 ps overall pixel area for power consumption 0.4, 0.9 2.7 W/cm 2 , respectively. In this first...
We report the first direct observation of neutrino interactions at a particle collider experiment. Neutrino candidate events are identified in 13.6 TeV center-of-mass energy $pp$ collision data set 35.4 fb${}^{-1}$ using active electronic components FASER detector Large Hadron Collider. The candidates required to have track propagating through entire length and be consistent with muon charged-current interaction. infer $153^{+12}_{-13}$ significance 16 standard deviations above...
The time resolution of the second monolithic silicon pixel prototype produced for MONOLITH H2020 ERC Advanced project was studied using a femtosecond laser. ASIC contains matrix hexagonal pixels with 100 {\mu}m pitch, readout by low-noise and very fast SiGe HBT frontend electronics. Silicon wafers 50 thick epilayer resistivity 350 {\Omega}cm were used to produce fully depleted sensor. At highest power density tested 2.7 W/cm2, laser pulses found be 45 ps signals generated 1200 electrons, 3...
Abstract Samples of the monolithic silicon pixel ASIC prototype produced in 2022 within framework Horizon 2020 MONOLITH ERC Advanced project were irradiated with 70 MeV protons up to a fluence 1 × 10 16 n eq /cm 2 , and then tested using beam 120 GeV/c pions. The contains matrix 100 μ m pitch hexagonal pixels, read out by low noise very fast frontend electronics 130 nm SiGe BiCMOS technology process. dependence on proton efficiency time resolution this was measured operated at power density...
The Picosecond Avalanche Detector is a multi-junction silicon pixel detector devised to enable charged-particle tracking with high spatial resolution and picosecond time-stamping capability. A proof-of-concept prototype of the PicoAD sensor has been produced by IHP microelectronics. Measurements 55Fe X-ray radioactive source show that functional an avalanche gain up maximum electron 23.
Recent developments in semiconductor pixel detectors allow a new generation of positron-emission tomography (PET) scanners that, combined with advanced image reconstruction algorithms, will for few hundred microns spatial resolutions. Such novel pioneer ultra-high resolution molecular imaging, field that is expected to have an enormous impact several medical domains, neurology among others. The University Geneva, the École Polytechnique Fédérale de Lausanne, and Lucerne, launched 100μPET...