A5050072331- CCD and CMOS Imaging Sensors
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Astrophysics and Cosmic Phenomena
- Neutrino Physics Research
- Photocathodes and Microchannel Plates
- Particle physics theoretical and experimental studies
- Infrared Target Detection Methodologies
- Radiation Detection and Scintillator Technologies
- Integrated Circuits and Semiconductor Failure Analysis
- Advanced Semiconductor Detectors and Materials
- Advanced Optical Sensing Technologies
- Thin-Film Transistor Technologies
- Image Processing Techniques and Applications
- GaN-based semiconductor devices and materials
- Advanced X-ray and CT Imaging
- Semiconductor Quantum Structures and Devices
- Engineering Applied Research
- Atomic and Subatomic Physics Research
- Heat Transfer and Boiling Studies
- Heat Transfer and Optimization
Fermi National Accelerator Laboratory
2012-2024
Bariloche Atomic Centre
2021
Consejo Nacional de Investigaciones Científicas y Técnicas
2021
University of Buenos Aires
2021
Universidad Nacional del Sur
2012
The CONNIE experiment is located at a distance of 30 m from the core commercial nuclear reactor, and has collected 3.7 kg-day exposure using CCD detector array sensitive to an ∼1 keV threshold for study coherent neutrino-nucleus elastic scattering. Here we demonstrate potential this low-energy neutrino as probe physics Beyond Standard Model, by recently published results constrain two simplified extensions Model with light mediators. We compare new limits those obtained same models neutrinos...
A bstract Oscura is a planned light-dark matter search experiment using Skipper-CCDs with total active mass of 10 kg. As part the detector development, collaboration plans to build Integration Test (OIT), an engineering test 10% mass. Here we discuss early science opportunities OIT for millicharged particles (mCPs) NuMI beam at Fermilab. mCPs would be produced low energies through photon-mediated processes from decays scalar, pseudoscalar, and vector mesons, or direct Drell-Yan productions....
A bstract We explore the sensitivity to new physics of recently proposed vIOLETA experiment: a 10 kg Skipper Charged Coupled Device detector deployed 12 meters away from commercial nuclear reactor core. investigate two broad classes models which benefit very low energy recoil threshold these detectors, namely neutrino magnetic moments and light mediators coupled neutrinos quarks or electrons. find that this experimental setup is sensitive light, weakly physics, in particular it could probe...
Abstract Oscura is a proposed multi-kg skipper-CCD experiment designed for dark matter (DM) direct detection search that will reach unprecedented sensitivity to sub-GeV DM-electron interactions with its 10 kg detector array. planning operate at SNOLAB 2070 m overburden, and aims background goal of less than one event in each electron bin the 2–10 ionization-signal region full 30 kg-year exposure, radiation rate 0.01 dru.[1 dru (differential unit) corresponds 1 event/kg/day/keV.] In order...
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...
A bstract We analyze in detail the physics potential of an experiment like one recently proposed by vIOLETA collaboration: a kilogram-scale Skipper CCD detector deployed 12 meters away from commercial nuclear reactor core. This would be able to detect coherent elastic neutrino nucleus scattering neutrinos, capitalizing on exceptionally low ionization energy threshold CCDs. To estimate reach, we elect measurement weak mixing angle as case study. choose realistic benchmark experimental setup...
The Skipper-in-CMOS image sensor integrates the non-destructive readout capability of Skipper Charge Coupled Devices (Skipper-CCDs) with high conversion gain a pinned photodiode in CMOS imaging process, while taking advantage in-pixel signal processing. This allows both single photon counting as well frame rate through highly parallel first results obtained from 15 x um^2 pixel cell fabricated Tower Semiconductor's commercial 180 nm Image Sensor process are presented. Measurements confirm...
Oscura is a proposed multi-kg skipper-CCD experiment designed for dark matter (DM) direct detection search that will reach unprecedented sensitivity to sub-GeV DM-electron interactions with its 10 kg detector array. planning operate at SNOLAB 2070 m overburden, and aims background goal of less than one event in each electron bin the 2-10 ionization-signal region full 30 kg-year exposure, radiation rate 0.01 dru. In order achieve this goal, must address potential source events, including...
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...
The next generation of high energy physics experiments, such as the proposed low mass dark matter detector in Oscura experiment, will require advanced semiconductor sensors skipper-CCD developed by Fermilab. In order to minimize sensor current, devices are designed operate at cryogenic temperatures. Additionally, these detectors must an ultra-low background radiation environment. These requirements pose a major engineering challenge. As alternative currently solution submerging liquid...
Future space observatories dedicated to direct imaging and spectroscopy of extra-solar planets will require ultra-low-noise detectors that are sensitive over a broad range wavelengths. Silicon charge-coupled devices (CCDs), such as EMCCDs, Skipper CCDs, Multi-Amplifier Sensing have demonstrated the ability detect measure single photons from ultra-violet near-infrared wavelengths, making them candidate technologies for this application. In context, we study relatively unexplored source...
We study the amplifier light emission of a set MOSFET transistors with different Drain-Source to Gate (DS-G) distances using dedicated Skipper-CCD sensor single photon resolution. This comes in form near-infrared photons produced on Skipper's readout stage by "hot electrons" generated output transistor. Depending applied voltages, this effect can be very faint generating only few or produce noticeable glow that greatly impact quality CCD images. A four and distance each them was specifically...
The next generation of experiments for rare-event searches based on skipper Charge Coupled Devices (skipper-CCDs) presents new challenges the sensor packaging and readout. Scaling active mass simultaneously reducing experimental backgrounds in orders magnitude requires a novel high-density silicon-based package that must be massively produced tested. In this work, we present design, fabrication, testing, empirical signal model multi-channel silicon package. addition, outline chosen...
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...
Oscura is a planned light-dark matter search experiment using Skipper-CCDs with total active mass of 10 kg. As part the detector development, collaboration plans to build Integration Test (OIT), an engineering test 10% mass. Here we discuss early science opportunities OIT for millicharged particles (mCPs) NuMI beam at Fermilab. mCPs would be produced low energies through photon-mediated processes from decays scalar, pseudoscalar, and vector mesons, or direct Drell-Yan productions. Estimates...
Fano noise, readout and the partial charge collection (PCC) effect collectively contribute to degradation of energy spectra in Charge Coupled Devices (CCD) measurements, especially at low energies. In this work, X-ray produced by fluorescence fluorine (677 eV) aluminum (1486 were recorded using a Skipper-CCD, which enabled reading noise be reduced 0.2 e-. Based on an analytical description photopeak shapes resulting from convolution PCC we achieved precise characterization spectra. This us...
Scientific CCD detectors are typically readout using the Correlated Double Sampling (CDS) technique. At low pixel rates, noise of ~2e- RMS is achieved. The limitation for reaching lower comes from 1/f component on output CCD, and this cannot be eliminated CDS. A new technique based a digital filter presented here suppressing 1/f. Using 0.4e-
This paper presents the implementation of a multiplexed analog readout electronics system that can achieve single-electron counting using Skipper-CCDs with non-destructive readout. The proposed allows best performance sensors to be maintained, sub-electron noise-level operation, while maintaining low-bandwidth data transfer, minimum number analog-to-digital converters (ADC) and low disk storage requirement zero added multiplexing time, even for simultaneous operation thousands channels....