D. Navas-Nicolás
A5012355001- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Atomic and Subatomic Physics Research
- Planetary Science and Exploration
- Nuclear Physics and Applications
- Scientific Research and Discoveries
- Quantum, superfluid, helium dynamics
- Nuclear physics research studies
- Superconducting and THz Device Technology
- Muon and positron interactions and applications
- Rare-earth and actinide compounds
Institut National de Physique Nucléaire et de Physique des Particules
2021-2025
Centre National de la Recherche Scientifique
2021-2025
Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
2020-2025
Université Paris-Saclay
2021-2025
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
2016-2024
Pontifical Catholic University of Rio de Janeiro
2022
Federico Santa María Technical University
2022
Universidade Estadual de Londrina
2022
A. Alikhanyan National Laboratory
2022
Beijing Normal University
2022
The Double Chooz collaboration presents a measurement of the neutrino mixing angle θ 13 using reactor $$ \overline{\nu_{\mathrm{e}}} observed via inverse beta decay reaction in which neutron is captured on hydrogen. This based 462.72 live days data, approximately twice as much data previous such analysis, collected with detector positioned at an average distance 1050 m from two cores. Several novel techniques have been developed to achieve significant reductions backgrounds and systematic...
Abstract In 1956 Reines & Cowan discovered the neutrino using a liquid scintillator detector. The neutrinos interacted with scintillator, producing light that propagated across transparent volumes to surrounding photo-sensors. This approach has remained one of most widespread and successful detection technologies used since. article introduces concept breaks conventional paradigm transparency by confining collecting near its creation point an opaque dense array optical fibres. technique,...
A study on cosmic muons has been performed for the two identical near and far neutrino detectors of Double Chooz experiment, placed at $\sim$120 $\sim$300 m.w.e. underground respectively, including corresponding simulations using MUSIC simulation package. This characterization allowed to measure muon flux reaching both be (3.64 $\pm$ 0.04) $\times$ 10$^{-4}$ cm$^{-2}$s$^{-1}$ detector (7.00 0.05) 10$^{-5}$ one. The seasonal modulation signal also studied observing a positive correlation with...
We present a search for signatures of neutrino mixing electron anti-neutrinos with additional hypothetical sterile flavors using the Double Chooz experiment. The is based on data from 5 years operation Chooz, including 2 in two-detector configuration. analysis profile likelihood, i.e.\ comparing to model prediction disappearance data-to-data comparison two respective detectors. optimized three active and one neutrino. It sensitive typical mass range $5 \cdot 10^{-3} $ eV$^2 \lesssim \Delta...
The measurement of neutrino Mass Ordering (MO) is a fundamental element for the understanding leptonic flavour sector Standard Model Particle Physics. Its determination relies on precise $\Delta m^2_{31}$ and m^2_{32}$ using either vacuum oscillations, such as ones studied by medium baseline reactor experiments, or matter effect modified oscillations those manifesting in long-baseline beams (LB$\nu$B) atmospheric experiments. Despite existing MO indication today, fully resolved...
For several decades now, scintillator detectors have found a wide range of applications in particle physics, including neutrino detection, the search for dark matter and even medical imaging. These so far strongly relied on transparency scintillating medium, through which light is typically propagated to surrounding photosensors. In this work, we present results 10 litre prototype based novel detection approach where an opaque medium used confine near its creation point that then collected...
Using the Double Chooz detector, designed to measure neutrino mixing angle ${\ensuremath{\theta}}_{13}$, products of ${\ensuremath{\mu}}^{\ensuremath{-}}$ capture on $^{12}\mathrm{C},^{13}\mathrm{C},^{14}\mathrm{N}$, and $^{16}\mathrm{O}$ have been measured. Over a period 489.5 days, $2.3\ifmmode\times\else\texttimes\fi{}{10}^{6}$ stopping cosmic collected, which $1.8\ifmmode\times\else\texttimes\fi{}{10}^{5}$ captured carbon, nitrogen, or oxygen nuclei in inner detector scintillator acrylic...
The formation of the Earth remains an epoch with mysterious puzzles extending to our still incomplete understanding planet's potential origin and bulk composition. Direct confirmation Earth's internal heat engine was accomplished by successful observation geoneutrinos originating from uranium (U) thorium (Th) progenies, manifestations natural radioactivity dominated potassium (40K) decay chains (238U) (232Th). This radiogenic energy output is critical planetary dynamics must be accurately...
The two Gamow-Teller (GT) branches connecting the double-$\ensuremath{\beta}$ decay partners ($^{116}\mathrm{Cd}$, $^{116}\mathrm{Sn}$) and ($^{150}\mathrm{Nd}$, $^{150}\mathrm{Sm}$) with intermediate nuclei $^{116}\mathrm{In}$ $^{150}\mathrm{Pm}$ are studied within a microscopic approach based on deformed proton-neutron quasiparticle random-phase approximation built Skyrme self-consistent mean field pairing correlations spin-isospin residual forces. results compared experimental GT strength...
The yields and production rates of the radioisotopes $^9$Li $^8$He created by cosmic muon spallation on $^{12}$C, have been measured two detectors Double Chooz experiment. identical are located at separate sites depths, which means they subject to different spectra. near (far) detector has an overburden $\sim$120 m.w.e. ($\sim$300 m.w.e.) corresponding a mean energy $32.1\pm2.0\,\mathrm{GeV}$ ($63.7\pm5.5\,\mathrm{GeV}$). Comparing data detailed simulation decays, contribution radioisotope...
During the commissioning of first two detectors Double Chooz experiment, an unexpected and dominant background caused by emission light inside optical volume has been observed. A specific study ensemble phenomena called Light Noise carried out in-situ, in external laboratory, order to characterize signals identify possible processes underlying effect. Some mechanisms instrumental noise originating from PMTs were identified it found that leading one arises localized on photomultiplier base...
We present the characterization of a novel radiation detector based on an opaque water-based liquid scintillator. Opaque scintillators, also known as LiquidO, are made to be highly scattering, such that scintillation light is effectively confined, and read out through wavelength-shifting fibers. The 1-liter, 32-channel prototype demonstrates capability for both spectroscopy topological reconstruction point-like events. design, construction, evaluation described, including modeling optical...
A bstract Neutrino detectors are among the largest photon detection instruments, built to capture scarce photons upon energy deposition. Many discoveries in neutrino physics, including itself, inseparable from advances technology, particularly photo-sensors and readout electronics, yield ever higher precision richer information. The measurement of neutrinos, referred as calorimetry , can be achieved two distinct approaches: photon-counting, where single-photon counted digitally,...
The CLOUD collaboration is pioneering the first fundamental research reactor antineutrino experiment using novel LiquidO technology for event-wise antimatter tagging. CLOUD's program byproduct of AntiMatter-OTech EIC/UKRI-funded project focusing on industrial innovation. experimental setup comprises an up to 10 tonne detector, filled with opaque scintillator and crossed by a dense grid wavelength-shifting fibres. detector expected be located at EDF-Chooz's new "ultra-near" site, 35 m from...
A bstract θ 13 oscillation analysis based on the observed antineutrino rates at Double Chooz far and near detectors for different reactor power conditions is presented. This approach provides a so unique simultaneous determination of total background without relying any assumptions specific contributions. The comprises 865 days data collected in both with least one operation. results are enhanced by use 24.06 (12.74 days) reactor-off (near) detector. considers $$ {\overline{\nu}}_e <mml:math...
The Jiangmen Underground Neutrino Observatory (JUNO) is a 20 kton liquid scintillator detector that will study reactor antineutrinos emitted from two nuclear power plants in the south of China at baseline about 53 km. Thanks to its photon detection systems (17612 20-inch PMTs and 25600 3-inch PMTs), JUNO achieve an unprecedented 3\% energy resolution 1 MeV along with scale calibration uncertainty 1\%. Such powerful performances allow resolve, for first time, interference pattern between...
Liquid scintillators are a common choice for neutrino physics experiments, but their capabilities to perform background rejection by scintillation pulse shape discrimination is generally limited in large detectors. This paper describes novel approach based event classification developed the context of Double Chooz reactor antineutrino experiment. Unlike previous implementations, this method uses Fourier power spectra shapes obtain event-wise information. A variable built from spectral...
Neutrino detectors are among the largest photonics instruments built for fundamental research. Since its inception, neutrino detection has been inexorably linked to challenging of scarce photons in huge instrumented volumes. Many discoveries physics, including itself, inseparable from evolution detector interfaces, i.e. photo-sensors and readout electronics, yield ever higher precision richer information. The measurement energy neutrinos, referred as calorimetry, is pursued today reach...
Being an intense and pure source of low energy electron antineutrinos, nuclear reactors are one the most powerful tools to investigate neutrino oscillations. The Double Chooz experiment aims for a precise determination mixing angle θ13 using two detector configuration with liquid scintillator target volume read by photomultipliers. antineutrino detection efficiency systematic uncertainty is dominant component in normalization affecting final precision on measurement.The collected data from...