Carlo Alberto Fenoglio
A5000766189- Particle Detector Development and Performance
- CCD and CMOS Imaging Sensors
- Radiation Detection and Scintillator Technologies
- Particle physics theoretical and experimental studies
- Advanced Optical Sensing Technologies
- Dark Matter and Cosmic Phenomena
- Neutrino Physics Research
- Radiation Effects in Electronics
- Integrated Circuits and Semiconductor Failure Analysis
- Cosmology and Gravitation Theories
- Scientific Research and Discoveries
- Photocathodes and Microchannel Plates
- Advanced Fluorescence Microscopy Techniques
- Atomic and Subatomic Physics Research
- Astrophysics and Cosmic Phenomena
- Thin-Film Transistor Technologies
- High-Energy Particle Collisions Research
- Superconducting Materials and Applications
- Silicon and Solar Cell Technologies
University of Geneva
2022-2024
Leibniz Institute for High Performance Microelectronics
2024
European Organization for Nuclear Research
2024
Instituto Valenciano de la Edificación
2023
École Polytechnique Fédérale de Lausanne
2021-2022
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...
The first results of the study high-energy electron neutrino (ν_{e}) and muon (ν_{μ}) charged-current interactions in FASERν emulsion-tungsten detector FASER experiment at LHC are presented. A 128.8 kg subset volume was analyzed after exposure to 9.5 fb^{-1} sqrt[s]=13.6 TeV pp data. Four (eight) ν_{e} interaction candidate events observed with a statistical significance 5.2σ (5.7σ). This is direct observation particle collider includes highest-energy ν_{μ} ever detected from an artificial...
A bstract The first FASER search for a light, long-lived particle decaying into pair of photons is reported. uses LHC proton-proton collision data at $$ \sqrt{s} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> </mml:math> = 13 . 6 TeV collected in 2022 and 2023, corresponding to an integrated luminosity 57 7 fb − 1 model with axion-like particles (ALPs) dominantly coupled weak gauge bosons the primary target. Signal events are...
Major advances in silicon pixel detectors, with outstanding timing performance, have recently attracted significant attention the community. In this work we present and discuss use of state-of-the-art Geiger-mode APDs, also known as single-photon avalanche diodes (SPADs), for detection minimum ionizing particles (MIPs) best-in-class resolution. The SPADs were implemented standard CMOS technology integrated on-chip quenching recharge circuitry. Two devices coincidence allowed to measure...
This paper presents the first results of study high-energy electron and muon neutrino charged-current interactions in FASER$\nu$ emulsion/tungsten detector FASER experiment at LHC. A subset volume, which corresponds to a target mass 128.6~kg, was exposed neutrinos from LHC $pp$ collisions with centre-of-mass energy 13.6~TeV an integrated luminosity 9.5 fb$^{-1}$. Applying stringent selections requiring electrons reconstructed above 200~GeV, four interaction candidate events are observed...
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 ASIC prototype, produced in 2024 as part of the Horizon 2020 MONOLITH ERC Advanced project, was tested with a 120 GeV/c pion beam. The features matrix hexagonal pixels 100 μm pitch, read by low-noise, high-speed front-end electronics built using 130 nm SiGe BiCMOS technology. It includes PicoAD sensor, which employs continuous, deep PN junction to generate avalanche gain. Data were taken across power densities from 0.05 2.6 W/cm 2 and sensor bias voltages...
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...
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 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...
The radiation hardness of 180 nm complementary metal–oxide–semiconductor (CMOS) and 55 bipolar–CMOS–double-diffused MOS single-photon avalanche diodes (SPADs) is studied using 10 MeV 100 protons up to a displacement damage dose 1 PeV/g. It found that the dark count rate (DCR) levels are dependent on number type defects created. A new stepwise increase in DCR presented. Afterpulsing was be significant contributor observed increase. model for prediction proposed considering afterpulsing. Most...
This paper presents a modular asynchronous read-out architecture suitable for large pixel detectors, specifically designed single cluster events reconstruction. The is based on projection structure to efficiently transmit hits the periphery using limited number of lines, resulting in low power consumption and fast-timing performance. proposed readout has been implemented 2.3×3.0 cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> ASIC 130...
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...
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 first FASER search for a light, long-lived particle decaying into pair of photons is reported. uses LHC proton-proton collision data at $\sqrt{s}=13.6~\text{TeV}$ collected in 2022 and 2023, corresponding to an integrated luminosity $57.7\text{fb}^{-1}$. A model with axion-like particles (ALPs) dominantly coupled weak gauge bosons the primary target. Signal events are characterised by high-energy deposits electromagnetic calorimeter no signal veto scintillators. One event observed,...
This letter presents the measurement of energy-dependent neutrino-nucleon cross section in tungsten and differential flux muon neutrinos anti-neutrinos. The analysis is performed using proton-proton collision data at a center-of-mass energy $13.6 \, {\rm TeV}$ corresponding to an integrated luminosity $(65.6 \pm 1.4) \mathrm{fb^{-1}}$. Using active electronic components FASER detector, $338.1 21.0$ charged current neutrino interaction events are identified, with backgrounds from other...
Major advances in silicon pixel detectors, with outstanding timing performance, have recently attracted significant attention the community. In this work we present and discuss use of state-of-the-art Geiger-mode APDs, also known as single-photon avalanche diodes (SPADs), for detection minimum ionizing particles (MIPs) best-in-class resolution. The SPADs were implemented standard CMOS technology integrated on-chip quenching recharge circuitry. Two devices coincidence allowed to measure...
In this work we present and discuss the use of state-of-the-art Geiger-mode APDs, also known as singlephoton avalanche diodes (SPADs), for detection minimum ionizing particles (MIPs) with best-in-class timing resolution.The SPADs were implemented in standard CMOS technology integrated on-chip quenching recharge circuitry.Two devices coincidence allowed to measure time-of-flight 180 GeV/c momentum pions a time resolution 22 ps FWHM (9.4 Gaussian sigma).This result paves path new generation...
This paper proposes a novel readout architecture for monolithic pixel sensors photon and particle detection, capable of handling event rates on the order tens kilohertz, while maintaining accurate timing resolution energy deposition measurements. An ideal approach providing local measurement unit each is not feasible, due to increased junction capacitance, potential crosstalk, higher power consumption. intermediate solution involves scalable versatile with ADC integrated outside pixels, but...
We first characterized large 180 nm CMOS single-photon avalanche diode (SPAD) imagers under 10 and 100 MeV protons irradiation up to a displacement damage dose of 1 PeV/g. used the dark count rate (DCR) assess non-ionizing levels created by protons. It is shown that DCR are determined number type defects within photocollector region irradiated SPAD. also found activation energies correspond defect energy oxygen-vacancy, divacancy, phosphorus-vacancy complexes. After irradiation, reduction...