C. Palomares
A5082061364- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Dark Matter and Cosmic Phenomena
- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Cosmology and Gravitation Theories
- Atomic and Subatomic Physics Research
- Solar and Space Plasma Dynamics
- Nuclear Physics and Applications
- Particle accelerators and beam dynamics
- Computational Physics and Python Applications
- Black Holes and Theoretical Physics
- Particle Accelerators and Free-Electron Lasers
- Planetary Science and Exploration
- Astro and Planetary Science
- Radiation Therapy and Dosimetry
- Muon and positron interactions and applications
- Atmospheric Ozone and Climate
- Noncommutative and Quantum Gravity Theories
- Distributed and Parallel Computing Systems
- Quantum, superfluid, helium dynamics
- Ionosphere and magnetosphere dynamics
Unidades Centrales Científico-Técnicas
2004-2024
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
2015-2024
Universidad Complutense de Madrid
2004-2024
Institut de Recherche sur les Lois Fondamentales de l'Univers
2019
RWTH Aachen University
2014
Max Planck Institute for Nuclear Physics
2014
University of California, Davis
2013
Lawrence Livermore National Laboratory
2013
Campbell Collaboration
2009
Bulgarian Academy of Sciences
2004
The Double Chooz experiment presents improved measurements of the neutrino mixing angle θ 13 using data collected in 467.90 live days from a detector positioned at an average distance 1050 m two reactor cores nuclear power plant. Several novel techniques have been developed to achieve significant reductions backgrounds and systematic uncertainties with respect previous publications, whereas efficiency $$ {\overline{\nu}}_e signal has increased. value is measured be sin2 2θ = 0.090 − 0.029 +...
The Double Chooz collaboration presents a measurement of the neutrino mixing angle θ 13 using reactor $$ \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 The Deep Underground Neutrino Experiment (DUNE) is a next generation experiment aimed to study neutrino oscillation. Its long-baseline configuration will exploit Near Detector (ND) and Far (FD) located at distance of ∼1300 km. FD consist four Liquid Argon Time Projection Chamber (LAr TPC) modules. A Photon Detection System (PDS) be used detect the scintillation light produced inside detector after interactions. PDS based on collectors coupled Silicon Photomultipliers (SiPMs)....
In June 2012, an Expression of Interest for a long-baseline experiment (LBNO) has been submitted to the CERN SPSC. LBNO considers three types neutrino detector technologies: double-phase liquid argon (LAr) TPC and magnetised iron as far detectors. For near detector, high-pressure gas embedded in calorimeter magnet is baseline design. A mandatory milestone concrete prototyping effort towards envisioned large-scale detectors, accompanying campaign measurements aimed at assessing associated...
The oscillation results published by the Double Chooz Collaboration in 2011 and 2012 rely on background models substantiated reactor-on data. In this analysis, we present a background-model-independent measurement of mixing angle θ13 including 7.53 days reactor-off A global fit observed antineutrino rates for different reactor power conditions is performed, yielding both total rate. are improved significantly data fit, as it provides direct This rate modulation analysis considers candidates...
Liquid argon time projection chambers (TPC) are widely used in neutrino oscillation and dark matter experiments. Detection of scintillation light liquid TPC's is challenging because its short wavelength, the VUV range, cryogenic temperatures (~86 K) at which sensors must operate. Wavelength shifters (WLS) typically needed to take advantage high Photon Efficiency (PDE) visible range most photondetectors. The Hamamatsu VUV4 S13370--6075CN SiPMs can directly detect without use WLS, main benefit...
We propose a novel detection concept for neutrinoless double-beta decay searches. This is based on Time Projection Chamber (TPC) filled with high-pressure gaseous xenon, and separated-function capabilities calorimetry tracking. Thanks to its excellent energy resolution, together powerful background rejection provided by the distinct topological signature, design discussed in this Letter Of Intent promises be competitive possibly out-perform existing proposals next-generation experiments....
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...
The Deep Underground Neutrino Experiment (DUNE) is a dual-site experiment for long-baseline neutrino oscillation studies, able to resolve the mass hierarchy and measure $\delta_{CP}$. DUNE will also have sensitivity supernova neutrinos processes beyond Standard Model, such as nucleon decay searches. Far Detector (FD) consist of four liquid argon TPC (17.5 kt total mass) with systems detection charge scintillation light produced by an ionization event. system permits both calorimetry position...
Neutrinoless double beta decay measurements are the most promising experiments both to reveal Majorana nature of neutrino and set a value for its mass. The NEXT project propose build High pressure Xenon TPC in Canfranc Underground Laboratory (Huesca, Spain) measure double-beta 136Xe, normal neutrinoless, with source mass 100 kg enriched xenon.
The Double Chooz experiment measures the neutrino mixing angle θ 13 by detecting reactor $$ {\overline{\nu}}_e via inverse beta decay. positron-neutron space and time coincidence allows for a sizable background rejection, nonetheless liquid scintillator detectors would profit from positron/electron discrimination, if feasible in large detector, to suppress remaining background. Standard particle identification, based on dependent profile of photon emission scintillator, can not be used given...
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...
Abstract The DUNE far detector has been designed to detect photons and electrons generated by the charged products of interaction neutrinos with a massive liquid argon (LAr) target. photon detection system (PDS) first (FD1) is composed 6000 units, named X-ARAPUCA . prompt light pulse particle energy release in LAr will complement boost Time Projection Chamber. It improve non-beam events tagging enable at low energies trigger calorimetry supernova neutrinos. an assembly several components....
The Deep Underground Neutrino Experiment (DUNE) is a dual-site experiment for long-baseline neutrino oscillation studies, and astrophysics nucleon decay searches. far detector 40-kton underground liquid argon time-projection-chamber (LAr TPC), in which the photon system adds precise timing capabilities. ProtoDUNE Dual-Phase will consist of 6×6×6 m3 LAr TPC to be operated at CERN Platform detection formed by 8-inch cryogenic photomultipliers from Hamamatsu. PMT model (R5912-20Mod) performance...
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...
A LED-based fiber calibration system for the ProtoDUNE-Dual Phase (DP) photon detection (PDS) has been designed and validated. ProtoDUNE-DP is a 6x6x6 m3 liquid argon time-projection-chamber (LAr TPC) currently being installed at Neutrino Platform CERN. The PDS based on 36 8-inch photomultiplier tubes (PMTs) will allow triggering cosmic rays. serves as prototype of final DUNE DP far detector in which also function to 3D event reconstruction non-beam physics. For this purpose an equalized PMT...