A5002831833- Particle physics theoretical and experimental studies
- Particle Detector Development and Performance
- High-Energy Particle Collisions Research
- Astrophysics and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Quantum Chromodynamics and Particle Interactions
- Dark Matter and Cosmic Phenomena
- Gamma-ray bursts and supernovae
- Advanced Optical Sensing Technologies
- Radio Astronomy Observations and Technology
- Neutrino Physics Research
- Astronomy and Astrophysical Research
- Particle Accelerators and Free-Electron Lasers
- Astronomical Observations and Instrumentation
- Advanced Data Storage Technologies
- Cosmology and Gravitation Theories
- Computational Physics and Python Applications
- CCD and CMOS Imaging Sensors
- Scientific Computing and Data Management
- Opportunistic and Delay-Tolerant Networks
- Computer Graphics and Visualization Techniques
- Distributed and Parallel Computing Systems
- Nanowire Synthesis and Applications
- Black Holes and Theoretical Physics
- Data Visualization and Analytics
Osservatorio Astrofisico di Catania
2015-2024
University of California, Santa Cruz
2012-2023
National Institute for Astrophysics
2013-2022
Brera Astronomical Observatory
2021
Osservatorio di Astrofisica e Scienza dello Spazio
2021
University of Perugia
2021
University of Salerno
2021
Budker Institute of Nuclear Physics
2015-2016
Siberian Branch of the Russian Academy of Sciences
2015-2016
Campbell Collaboration
2013
The ASTRI Mini-Array (MA) is an INAF project to build and operate a facility study astronomical sources emitting at very high-energy in the TeV spectral band. MA consists of group nine innovative Imaging Atmospheric Cherenkov telescopes. telescopes will be installed Teide Astronomical Observatory Instituto de Astrofisica Canarias (IAC) Tenerife (Canary Islands, Spain) on basis host agreement with INAF. Thanks its expected overall performance, better than those current telescopes' arrays for...
The present work aims to address a comprehensive analytical analysis of new accurate equivalent electrical model silicon photomultiplier (SiPM) detectors. proposed circuit allows truthfully reproduce the output signal waveform generated by light sensors apart from specific technology adopted for fabrication process, and can also be profitably exploited perform reliable circuit-level simulations. A detailed in-depth investigation functional parameters involved in pulse signals is here...
We report on the first detection of very high-energy (VHE) gamma-ray emission from Crab Nebula by a Cherenkov telescope in dual-mirror Schwarzschild-Couder (SC) configuration. The result has been achieved means 4 m size ASTRI-Horn telescope, operated Mt. Etna (Italy) and developed context Telescope Array Observatory preparatory phase. SC design is aplanatic characterized small plate scale, allowing us to implement large field view cameras with small-size pixel sensors high compactness....
In this paper, the development of dual mirror Small Size Telescopes (SST) for Cherenkov Telescope Array (CTA) is reviewed. Up to 70 SST, with a primary diameter 4 m, will be produced and installed at CTA southern site. These allow investigation gamma-ray sky highest energies accessible CTA, in range from about 1 TeV 300 TeV. The telescope presented contribution characterized by two major innovations: use Schwarzschild-Couder configuration an innovative camera using as sensors either...
In the context of Cherenkov Telescope Array observatory project, ASTRI SST-2M end-to-end prototype telescope, entirely supported by Italian National Institute Astrophysics, is designed to detect cosmic primary gamma ray energies from few TeV up hundreds TeV. The camera part challenging synergy novel optical design, sensors, front-end electronics and telescope structure design. devoted imaging recording images air showers induced particles into Earth's atmosphere. order match energy range...
The Cherenkov Telescope Array (CTA) foresees, in its southern site (Chile), the implementation of up to 70 small-sized telescopes (SSTs), which will extend energy coverage hundreds TeV. It has been proposed that one first set CTA SSTs be represented by ASTRI mini-array, includes (at least) nine telescopes. endto-end prototype such telescopes, named SST-2M, is installed Italy and it now completing overall commissioning entering science verification phase. are characterized an optical system...
INTRODUÇÃO: O melanoma cutâneo é um dos tipos de câncer mais agressivos e maior incidência em diversas populações ao redor do mundo, com destaque para os países alta exposição solar, como o Brasil. Esse origina-se nos melanócitos, células responsáveis pela pigmentação da pele, sua tem aumentado longo das últimas décadas, especialmente faixas etárias avançadas. Fatores a solar excessiva, histórico familiar características individuais, cor pele presença sinais atípicos, estão entre principais...
A comprehensive and in-depth characterization procedure for obtaining very accurate measurements on silicon photomultiplier (SiPM) detectors is described here. large amount of electro-optical tests are systematically carried out in terms the most significant SiPM performance parameters; particular, an estimation photon detection efficiency achieved, based single-photon counting technique, with substraction dark noise contribution avoiding additional sources crosstalk after pulsing. Some...
ASTRI is a Flagship Project financed by the Italian Ministry of Education, University and Research, led National Institute Astrophysics, INAF. Primary goal project design production an end-to-end prototype Small Size Telescope for CTA (Cherenkov Array) in dual-mirror configuration (SST-2M) equipped with camera at focal plane composed array Silicon Photo-Multipliers devoted to investigation highest gamma-ray energy band. The SST-2M will be placed INAF M.G. Fracastoro observing station Serra...
All camera designs for Small-Sized telescopes (SSTs) proposed the Cherenkov Telescope Array (CTA) utilize silicon photomultipliers (SiPM) as their baseline photon sensor technology. The dual-mirror SST (SST-2M) has a smaller plate scale (i.e. image size) than single-mirror SST, allowing it to employ 2,000 square SiPMs with pixel sizes of approximately 6 mm, close mainstream SiPM sizes. In CTA, night sky background level typically ∼25 Mcounts/s/pixel (>100 at maximum) places severe...
A comprehensive and in-depth characterization procedure for obtaining very accurate measurements on silicon photomultiplier detectors (SiPMs) is here described. large amount of optical tests are systematically carried out discussed in terms the most important SiPM performance parameters; particular, an estimation photon detection efficiency 350-900-nm wavelength spectral range steps 10 nm achieved, based single-photon counting technique, with substraction dark noise contribution avoiding...
This paper addresses a comprehensive analytical analysis of new accurate electrical model silicon photomultiplier (SiPM) detectors. The adopted circuit allows to truly reproduce the SiPM output signal waveform apart from specific technology employed for fabrication process, and can also be profitably exploited perform reliable circuit-level simulations. A novel expression transient single-photoelectron response due photon absorption is systematically developed. attained function accurately...
ASTRI is a Flagship Project financed by the Italian Ministry of Education, University and Research, led INAF, National Institute Astrophysics. The primary goal project realization an end-to-end prototype Small Size Telescope for Cherenkov Array. prototype, named SST-2M, based on completely new double mirror optics design will be equipped with camera made matrix SiPM detectors. Here we describe SST-2M concept: basic idea, detectors, electronics, current status some results coming from...
ASTRI (Astrofisica con Specchi a Tecnologia Replicante Italiana) is Flagship Project financed by the Italian Ministry of Education, University and Research, led INAF, National Institute Astrophysics. The main goals project are realization an end-to-end prototype Small Size Telescope (SST) for Cherenkov Array (CTA) in dual- mirror configuration (SST-2M) and, subsequently, mini-array comprising seven SST-2M telescopes. will be placed at final CTA Southern Site, which part seed array, around...
Silicon photomultipliers (SiPMs) are emerging semiconductor-based photosensors, addressing the challenge of low-light detection down to single-photon counting level. A design high-performance front-end electronics for SiPM readout requires development accurate electrical models. Numerous reliable models have matured in recent years; however, circuit parameter extraction is rather cumbersome and involves extensive measurement steps be performed. Starting from a recently developed model device...
In this letter, a recently published model of silicon photomultiplier (SiPM) sensors is profitably extended to include the important effects read-out electronics on shape output pulse waveforms. An improved analytical expression has been developed, also accounting for loading effect and bandwidth limitation coupled front-end, through which SiPM dynamic response can be accurately reproduced predicted. Experimental tests actual detection systems corroborate results.