Mariano Cababié
A5004752634- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- CCD and CMOS Imaging Sensors
- Particle physics theoretical and experimental studies
- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Advanced Optical Sensing Technologies
- Radiation Detection and Scintillator Technologies
- Photocathodes and Microchannel Plates
- Nuclear Physics and Applications
- Spectroscopy and Laser Applications
- High-Energy Particle Collisions Research
- Radio Astronomy Observations and Technology
- Ocular and Laser Science Research
- Superconducting and THz Device Technology
- Integrated Circuits and Semiconductor Failure Analysis
- Radiation Therapy and Dosimetry
- Scientific Research and Discoveries
- Advanced Semiconductor Detectors and Materials
- Nuclear physics research studies
- Advanced Thermodynamic Systems and Engines
Institute of High Energy Physics
2024-2025
TU Wien
2024-2025
University of Buenos Aires
2020-2025
Consejo Nacional de Investigaciones Científicas y Técnicas
2020-2025
Fermi National Accelerator Laboratory
2020-2025
University of Washington
2024
Fundación Ciencias Exactas y Naturales
2023
Bariloche Atomic Centre
2021
We present the first direct-detection search for sub-GeV dark matter using a new ∼2-gram high-resistivity Skipper CCD from dedicated fabrication batch that was optimized searches. Using 24 days of data acquired in MINOS cavern at Fermi National Accelerator Laboratory, we measure lowest rates silicon detectors events containing one, two, three, or four electrons, and achieve world-leading sensitivity large range masses. Data taken with different thicknesses detector shield suggest correlation...
Many low-threshold experiments observe sharply rising event rates of yet unknown origins below a few hundred eV, and larger than expected from known backgrounds. Due to the significant impact this excess on dark matter or neutrino sensitivity these experiments, collective effort has been started share knowledge about individual observations. For this, EXCESS Workshop was initiated. In its first iteration in June 2021, ten rare search collaborations contributed initiative via talks...
We present the first results from a dark matter search using six Skipper-CCDs in SENSEI detector operating at SNOLAB. employ bias-mitigation technique of hiding approximately 46% our total data and aggressively mask images to remove backgrounds. Given exposure after masking 100.72 gram-days well-performing sensors, we observe 55 two-electron events, 4 three-electron no events containing 4-10 electrons. The are consistent with pileup one-electron events. Among 2 appear pixels that likely...
Millicharged particles, proposed by various extensions of the standard model, can be created in pairs high-energy photons within nuclear reactors and interact electromagnetically with electrons matter. Recently, existence a plasmon peak interaction cross section silicon eV range was highlighted as promising approach to enhance low-energy sensitivities. The CONNIE Atucha-II reactor neutrino experiments utilize Skipper-CCD sensors, which enable detection interactions range. We present...
We use a science-grade skipper charge-coupled device (skipper CCD) operating in low-radiation background environment to develop semiempirical model that characterizes the origin of single-electron events CCDs. identify, separate, and quantify three independent contributions events, which were previously bundled together classified as ``dark counts'': dark current, amplifier light, spurious charge. measure depends on exposure,...
We present results from a 3.25 kg-day target exposure of two silicon charge-coupled devices (CCDs), each with 24 megapixels and skipper readout, deployed in the DAMIC setup at SNOLAB. With reduction pixel readout noise factor 10 relative to previous detector, we investigate excess population low-energy events CCD bulk previously observed above expected backgrounds. address dominant systematic uncertainty analysis through depth fiducialization designed reject surface backgrounds on CCDs. The...
Millicharged particles appear in several extensions of the standard model, but have not yet been detected. These hypothetical could be produced by an intense proton beam striking a fixed target. We use data collected 2020 SENSEI experiment MINOS cavern at Fermi National Accelerator Laboratory to search for ultrarelativistic millicharged collisions protons NuMI with graphite The absence any ionization events 3 6 electrons allow us place world-leading constraints on masses between 30 380 MeV....
We present results from data acquired by the SENSEI experiment at SNOLAB after a major upgrade in May 2023, which includes deploying 16 new sensors and replacing copper trays that house CCDs with light-tight design. observe single-electron event rate of $(1.39 \pm 0.11) \times 10^{-5}$ e$^-$/pix/day, corresponding to $(39.8 3.1)$ e$^-$/gram/day. This is an order-of-magnitude improvement compared previous lowest silicon detector for any photon near-infrared-ultraviolet range. use these obtain...
Abstract While neutrinos are often treated as a background for many dark matter experiments, these particles offer new avenue physics: the detection of core-collapse supernovae. Supernovae extremely energetic, violent and complex events that mark death massive stars. During their collapse stars emit large number in short burst. These carry 99% emitted energy which makes fundamental understanding This paper illustrates how COSINUS (Cryogenic Observatory SIgnatures seen Next-generation...
We present the first results from a dark matter search using six Skipper-CCDs in SENSEI detector operating at SNOLAB. With an exposure of 534.9 gram-days well-performing sensors, we select events containing 2 to 10 electron-hole pairs. After aggressively masking images remove backgrounds, observe 55 two-electron events, 4 three-electron and no electrons. The are consistent with pileup one-electron events. Among appear pixels that likely impacted by defects, although not strongly enough...
A bstract Charge Coupled Devices (CCD) are being used for reactor neutrino experiments and have already demonstrated their potential in constraining new physics models. The prospect of a Skipper-CCD experiment looking standard beyond model (BSM) nuclear has been evaluated different benchmark scenarios. Here, we report the first installation 2-g inside containment building 2 GW th power plant analyze its performance throughout 18 months operation. sensor was successfully deployed at Atucha...
The Oscura experiment will lead the search for low-mass dark matter particles using a very large array of novel silicon Charge Coupled Devices (CCDs) with threshold two electrons and total exposure 30 kg-yr. R&D effort, which began in FY20, is currently entering design phase goal being ready to start construction late 2024. have unprecedented sensitivity sub-GeV that interact electrons, probing matter-electron scattering masses down 500 keV absorbed by 1 eV. effort has made some significant...
We present experimental results using a single-electron resolution skipper CCD running above ground level to demonstrate the potential of this technology for its use in reactor neutrino observations and other low-energy particle-interaction experiments. Operating conditions event-selection criteria are provided decouple most background rate at low energies. The majority comes from interactions inactive silicon surrounding active detector volume that ends up readout register sensor. Our final...
Fully depleted thick silicon skipper-charge-coupled devices (skipper CCDs) are an important technology to probe neutrino and light-dark-matter interactions due their subelectron read-out noise. However, the successful search for rare or dark-matter events requires signal all backgrounds be fully characterized. In particular, a measurement of electron-hole pair creation energy below 150 eV Fano factor necessary characterizing dark matter signals. Moreover, photons from background radiation...
Millicharged particles appear in several extensions of the Standard Model, but have not yet been detected. These hypothetical could be produced by an intense proton beam striking a fixed target. We use data collected 2020 SENSEI experiment MINOS cavern at Fermi National Accelerator Laboratory to search for ultra-relativistic millicharged collisions protons NuMI with graphite The absence any ionization events 3 6 electrons allow us place world-leading constraints on masses between 30 MeV 380...
Abstract COSINUS is a dark matter (DM) direct search experiment that uses sodium iodide (NaI) crystals as cryogenic calorimeters. Thanks to the low nuclear recoil energy threshold and event-by-event discrimination capability, will address long-standing DM claim made by DAMA/LIBRA collaboration. The currently under construction at Laboratori Nazionali del Gran Sasso, Italy, employs large cylindrical water tank passive shield meet required background rate. However, muon-induced neutrons can...
COSINUS is a dark matter (DM) direct search experiment that uses sodium iodide (NaI) crystals as cryogenic calorimeters. Thanks to the low nuclear recoil energy threshold and event-by-event discrimination capability, will address long-standing DM claim made by DAMA/LIBRA collaboration. The currently under construction at Laboratori Nazionali del Gran Sasso, Italy, employs large cylindrical water tank passive shield meet required background rate. However, muon-induced neutrons can mimic...
Fano noise, readout and the partial-charge-collection (PCC) effect collectively contribute to degradation of energy spectra in charge-coupled device (CCD) measurements, especially at low energies. In this work, x rays produced by fluorescence fluorine (677 eV) aluminum (1486 were recorded using a Skipper-CCD, which enabled noise be reduced $0.2\phantom{\rule{0.2em}{0ex}}{e}^{\ensuremath{-}}$. Based on an analytical description photopeak shapes resulting from convolution PCC we achieved...
We present experimental results using a single-electron resolution Skipper-CCD running above ground level to demonstrate the potential of this technology for its use in reactor neutrino observations and other low-energy particle interaction experiments. Operating conditions event-selection criteria are provided decouple most background rate at low energies. Our final events with energies as $5$ ionized electron-hole pairs show that exponentially increasing seen technologies is not our data....
Thick fully-depleted charge-coupled devices (CCDs) with high-resistivity silicon are used in a wide range of scientific applications, from particle detection to astronomical imaging. Their low noise and high charge collection efficiency allow us reach unprecedented sensitivity physical processes low-energy transfers. The newly-developed Skipper-CCD enhances this by reducing the read-out reaching sub-electron resolution. In work, we summarize fundamentals skipper-CCD operation prospects for...
Charge Coupled Devices (CCD) are used for reactor neutrino experiments and already shown their potential in constraining new physics models. The prospect of a Skipper-CCD experiment looking standard beyond model (BSM) nuclear has been recently evaluated different benchmark scenarios. Here we report the installation first 2 g inside containment building GW$_{th}$ power plant, positioned 12 meters from center core. We discuss challenges involved commissioning detector present data acquired...
We present results from a 3.2 kg-day target exposure of two 24-megapixel skipper charge-coupled devices (CCDs) deployed in the DAMIC setup at SNOLAB. With 10× reduction pixel noise, we investigate excess population low-energy bulk events previously observed. address dominant systematic uncertainty previous analysis through depth fiducialization designed to reject surface backgrounds on CCDs. The observed energy spectrum and spatial distribution ionization with electron-equivalent energies...
Millicharged particles, proposed by various extensions of the standard model, can be created in pairs high-energy photons within nuclear reactors and interact electromagnetically with electrons matter. Recently, existence a plasmon peak interaction cross-section silicon eV range was highlighted as promising approach to enhance low-energy sensitivities. The CONNIE Atucha-II reactor neutrino experiments utilize Skipper-CCD sensors, which enable detection interactions range. We present...
Abstract COSINUS is a new cryogenic observatory for rare event searches located in the Laboratori Nazionali del Gran Sasso Italy. COSINUS’s first goal to clarify whether signal detected by DAMA/LIBRA experiment originates from dark matter particle interactions or has different nature. To this aim, sodium iodide (NaI) scintillating calorimeters read out transition edge sensors (TESs) are developed. preserve NaI crystal TES fabrication process, implemented novel design, remoTES, where...