Igor Fonseca Pains
A5068761284- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Particle physics theoretical and experimental studies
- CCD and CMOS Imaging Sensors
- Atomic and Subatomic Physics Research
- Astrophysics and Cosmic Phenomena
- Neutrino Physics Research
- Nuclear Physics and Applications
- Microbial bioremediation and biosurfactants
- Calibration and Measurement Techniques
- Opportunistic and Delay-Tolerant Networks
- Data-Driven Disease Surveillance
- Atmospheric Ozone and Climate
- Spectroscopy and Laser Applications
- Cosmology and Gravitation Theories
- Nuclear reactor physics and engineering
- Computational Physics and Python Applications
Universidade Federal de Juiz de Fora
2020-2024
Sapienza University of Rome
2022-2024
University of Coimbra
2024
Gran Sasso Science Institute
2024
Istituto Nazionale di Fisica Nucleare, Sezione di Roma Tre
2024
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran Sasso
2024
Istituto Nazionale di Fisica Nucleare
2024
Roma Tre University
2024
Istituto Nazionale di Fisica Nucleare, Sezione di Roma I
2022
The search for a novel technology able to detect and reconstruct nuclear electron recoil events with the energy of few keV has become more important now that large regions high-mass dark matter (DM) candidates have been excluded. Moreover, detector sensitive incoming particle direction will be crucial in case DM discovery open possibility studying its properties. Gaseous time projection chambers (TPC) optical readout are very promising detectors combining detailed event information provided...
CYGNO is an international collaboration with the aim of operating a optical time projection chamber (TPC) for directional Dark Matter (DM) searches and solar neutrino spectroscopy, to be deployed at Laboratori Nazionali del Gran Sasso (LNGS). A / (60/40) mixture used, along triple Gas Electron Multiplier (GEM) cascade amplify ionization signal. The scintillation produced in electron avalanches read out using scientific complementary metal–oxide–semiconductor (sCMOS) camera. This solution has...
Abstract The nature of dark matter is still unknown and an experimental program to look for particles in our Galaxy should extend its sensitivity light the GeV mass range exploit directional information DM particle motion (Vahsen et al. CYGNUS: feasibility a nuclear recoil observatory with neutrinos, arXiv:2008.12587 , 2020). Cygno project studying gaseous time projection chamber operated at atmospheric pressure Gas Electron Multiplier (Sauli Nucl Instrum Meth A 386:531,...
Abstract The CYGNO collaboration is developing next generation directional Dark Matter (DM) detection experiments, using gaseous Time Projection Chambers (TPCs), as a robust method for identifying Weakly Interacting Massive Particles (WIMPs) below the Neutrino Fog. SF 6 potentially ideal this since it provides high fluorine content, enhancing sensitivity to spin-dependent interactions and, Negative Ion Drift (NID) gas, reduces charge diffusion leading improved positional resolution. CF 4 ,...
Abstract The CYGNO experiment aims to study rare events related the search for low-mass dark matter and solar neutrino events. One of main components background comes from cosmic rays that generate long tracks in detector’s images. interaction such particles with gas releases a variable energy profile along its trajectory form multiple cores can be easily reconstructed erroneously by being split into more than one cluster. Thus, this work offers newly adapted version well-known density-based...
Abstract We are going to discuss the R&D and prospects for CYGNO project, towards development of an innovative, high precision 3D tracking Time Projection Chamber with optical readout using He:CF 4 gas at 1 bar. uses a stack triple thin GEMs charge multiplication, this induces scintillation in CF gas, which is by PMTs sCMOS cameras. High granularity low noise along sampling PMT allows have head tail capability particle identification down O(keV) energy directional Dark Matter searches...
The CYGNO project aims at developing a high resolution Time Projection Chamber with optical readout for directional dark matter searches and solar neutrino spectroscopy. Peculiar CYGNO’s features are the 3D tracking capability provided by combination of photomultipliers scientific CMOS camera signals, combined helium-fluorine-based gas mixture atmospheric pressure amplified electron multipliers structures. In this paper, performances achieved prototypes prospects upcoming underground...
Abstract Active Pixel sensors play a crucial role in enabling successful low-light scientific experiments due to their inherent advantages and capabilities. Such devices not only offer high spatial resolution but also feature individual pixels with integrated amplifiers, allowing for direct signal amplification at the pixel level. This results reduced readout noise improved signal-to-noise ratio (SNR), which are particularly vital when dealing limited photon counts environments. holds true...
The CYGNO project aims to develop a high-precision optical Time Projection Chamber (TPC) for directional Dark Matter search and solar neutrino spettroscopy, be hosted at Laboratori Nazionali del Gran Sasso (LNGS). distinctive feature of include the exploitation scientific CMOS cameras photomultiplier tubes coupled Gas Electron Multiplier amplification within helium-fluorine-based gas mixture atmospheric pressure. primary objective this is achieve three-dimentional tracking with head-tail...
The INFN Cloud project was launched at the beginning of 2020, aiming to build a distributed infrastructure and provide advanced services for scientific communities. A Platform as Service (PaaS) created inside that allows experiments develop access resources Software (SaaS), CYGNO is betatester this system. aim experiment realize large gaseous Time Projection Chamber based on optical readout photons produced in avalanche multiplication ionization electrons GEM stack. To extent, exploits...
The CYGNO project aims to study rare events, as low-mass (few GeV) Dark Matter (DM) particle or solar neutrino interactions, exploiting the approach of optical readout scintillation light produced in amplification a multiple Gas Electron Multiplier (GEM) structure, primary ionization originated large volume Time Projection Chamber (TPCs). is filled with an He:CF4 gas mixture at atmospheric pressure. 3D topology, and therefore direction recoils, reconstructed thanks combined use...
The CYGNO collaboration is developing next generation directional Dark Matter (DM) detection experiments, using gaseous Time Projection Chambers (TPCs), as a robust method for identifying Weakly Interacting Massive Particles (WIMPs) below the Neutrino Fog. SF6 potentially ideal this since it provides high fluorine content, enhancing sensitivity to spin-dependent interactions and, Negative Ion Drift (NID) gas, reduces charge diffusion leading improved positional resolution. CF4, although not...
The CYGNO experiment aims to build a large ($\mathcal{O}(10)$ m$^3$) directional detector for rare event searches, such as nuclear recoils (NRs) induced by dark matter (DM), weakly interactive massive particles (WIMPs). concept comprises time projection chamber (TPC), filled with He:CF$_4$ 60/40 scintillating gas mixture at room temperature and atmospheric pressure, equipped an amplification stage made of stack three electron multipliers (GEMs) which are coupled optical readout. latter...
Abstract The CYGNO experiment aims to build a large ( $$\mathcal {O}(10)$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>O</mml:mi> <mml:mo>(</mml:mo> <mml:mn>10</mml:mn> <mml:mo>)</mml:mo> </mml:mrow> </mml:math> m $$^3$$ <mml:mmultiscripts> <mml:mrow/> <mml:mn>3</mml:mn> </mml:mmultiscripts> ) directional detector for rare event searches, such as nuclear recoils (NRs) induced by dark matter (DM), weakly interactive massive particles (WIMPs). concept comprises...
The Cygno project aims at the construction of a gaseous Time Projection Chamber (TPC) with optical readout for high precision three-dimensional tracking low energy nuclear and electronic recoils down to few keVs. efficient discrimination between these two processes represents main challenge modern dark matter direct detection experiments. In this context, TPCs are promising innovative technique that can reach very good 3D position reconstruction capabilities thanks performance latest...
The ν-Angra experiment aims to estimate the flux of antineutrino particles coming out from Angra II nuclear reactor. Such is proportional thermal power released in fission process and therefore can be used infer quantity fuel that has been burned during a certain period. To do so, Collaboration developed an detector complete acquisition system readout store signals generated by its sensors. entire detection installed inside container laboratory placed beside dome reactor, restricted zone...
The Neutrinos Angra Experiment aims at monitoring nuclear plants by detecting antineutrino particles coming out from its fuel burn-up process. Collaboration developed a fully-equipped detector to accomplish this task. It is currently in operation on the surface and next dome of II reactor. Selecting antineutrinos events challenge task due high level background noise produced cosmic ray particles. One main parameters used select number photons acquired detector's sensors. This quantity...
The CYGNO experiment aims at the development of a large gaseous TPC with GEM-based amplification and an optical readout by means PMTs scientific CMOS cameras for 3D tracking down to O(keV) energies, directional detection rare events such as low mass Dark Matter solar neutrino interactions. largest prototype built so far towards realisation demonstrator is 50 L active volume LIME, 4 single sCMOS imaging 33$\times$33 cm\textsuperscript{2} area cm drift, that has been installed in underground...
The CYGNO project for the development of a high precision optical readout gaseous TPC directional Dark Matter search and solar neutrino spectroscopy will be presented. It is to hosted at Laboratori Nazionali del Gran Sasso. peculiar features are use sCMOS cameras PMTs coupled GEMs amplification helium-based gas mixture atmospheric pressure, in order achieve 3D tracking with head tail capability background rejection down O(keV) energy, boost sensitivity low WIMP masses. latest R&D results...
The v-Angra experiment aims to estimate the flux of antineutrino particles coming out from Angra II nuclear reactor. Such is proportional thermal power released in fission process and therefore can be used infer quantity fuel that has been burned during a certain period. To do so, Collaboration developed an detector complete acquisition system readout store signals generated by its sensors. entire detection installed inside container laboratory placed beside dome reactor, restricted zone...
The Neutrinos Angra Experiment aims at developing a system capable of monitoring the fuel-burning process nuclear reactors. This is based on an antineutrino detector located few meters far from core II reactor. One main parameters used to select events released energy left by particle when interacting with medium which, in turn, proportional amplitude and area signals generated detector's transducers. However, estimation such quantities may lose accuracy due saturation effects caused...