P. Novella
A5052576412- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Atomic and Subatomic Physics Research
- Radiation Detection and Scintillator Technologies
- Muon and positron interactions and applications
- Particle accelerators and beam dynamics
- Nuclear physics research studies
- Nuclear Physics and Applications
- High-Energy Particle Collisions Research
- Quantum, superfluid, helium dynamics
- Noncommutative and Quantum Gravity Theories
- Radiation Therapy and Dosimetry
- Geophysics and Gravity Measurements
- Nuclear reactor physics and engineering
- Planetary Science and Exploration
- Advanced NMR Techniques and Applications
- Photocathodes and Microchannel Plates
- Computational Physics and Python Applications
- Atmospheric Ozone and Climate
- Inorganic Fluorides and Related Compounds
- Spectroscopy and Laser Applications
- Medical Imaging Techniques and Applications
Instituto de Física Corpuscular
2015-2024
Universitat de València
2015-2024
Universitat Politècnica de València
2023
Instituto de Instrumentación para Imagen Molecular
2023
Universidad de Zaragoza
2023
European Spallation Source
2023
Ben-Gurion University of the Negev
2023
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
2010-2022
University of the Basque Country
2022
Parc Científic de la Universitat de València
2022
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 $$ {\overline{\nu}}_e signal has increased. value is measured be sin2 2θ = 0.090 − 0.029 +...
NEXT-100 is an electroluminescent high-pressure xenon gas time projection chamber that will search for the neutrinoless double beta (0νββ) decay of 136Xe. The detector possesses two features great value 0νββ searches: energy resolution better than 1% FWHM at Q 136Xe and track reconstruction discrimination signal background events. This combination results in excellent sensitivity, as discussed this paper. Material-screening measurements a detailed Monte Carlo simulation predict rate most 4 ×...
The half-life for double-$\ensuremath{\beta}$ decay of $^{150}\mathrm{Nd}$ has been measured by the NEMO-3 experiment at Modane Underground Laboratory. Using 924.7 days data recorded with $36.55$ g $^{150}\mathrm{Nd}$, we $2\ensuremath{\nu}\ensuremath{\beta}\ensuremath{\beta}$ to be ${T}_{1/2}^{2\ensuremath{\nu}}=(9.{11}_{\ensuremath{-}0.22}^{+0.25}(\mathrm{stat}.)\ifmmode\pm\else\textpm\fi{}0.63(\mathrm{syst}.))\ifmmode\times\else\texttimes\fi{}{10}^{18}$ yr. observed limit on neutrinoless...
The Double Chooz collaboration presents a measurement of the neutrino mixing angle θ 13 using reactor $$ \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...
A new method to tag the barium daughter in double-beta decay of ^{136}Xe is reported. Using technique single molecule fluorescent imaging (SMFI), individual dication (Ba^{++}) resolution at a transparent scanning surface demonstrated. single-step photobleach confirms ion interpretation. Individual ions are localized with superresolution (∼2 nm), and detected statistical significance 12.9σ over backgrounds. This lays foundation for potentially background-free neutrinoless technology, based on...
The NEXT experiment aims to observe the neutrinoless double beta decay of 136Xe in a high-pressure xenon gas TPC using electroluminescence (EL) amplify signal from ionization. One main advantages this technology is possibility reconstruct topology events with energies close Q ββ . This paper presents first demonstration that provides extra handles reject background data obtained NEXT-DEMO prototype. Single electrons resulting interactions 22Na 1275 keV gammas and electronpositron pairs...
A bstract The Neutrino Experiment with a Xenon TPC (NEXT) searches for the neutrinoless double-beta (0 νββ ) decay of 136 Xe using high-pressure xenon gas TPCs electroluminescent amplification. scaled-up version this technology about 1 tonne enriched could reach in less than 5 years operation sensitivity to half-life 0 better 10 27 years, improving current limits by at least one order magnitude. This prediction is based on well-understood background model dominated radiogenic sources....
We report results from the NEMO-3 experiment based on an exposure of 1275 days with 661 g (130)Te in form enriched and natural tellurium foils. The ββ decay rate is found to be greater than zero a significance 7.7 standard deviations half-life measured T(½)(2ν) = [7.0 ± 0.9(stat) 1.1(syst)] × 10(20) yr. This represents most precise measurement this yet published first real-time observation decay.
The search for neutrinoless double beta decay is a very active field in which the number of proposals next-generation experiments has proliferated. In this paper we attempt to address both sense and sensitivity such proposals. Sensitivity comes first, by means proposing simple unambiguous statistical recipe derive putative Majorana neutrino mass, m_bb. order make how different experimental approaches compare, apply selection proposals, comparing resulting sensitivities. We also propose...
We investigate the potential of using deep learning techniques to reject background events in searches for neutrinoless double beta decay with high pressure xenon time projection chambers capable detailed track reconstruction. The differences topological signatures and signal can be learned by neural networks via training over many thousands events. These then used classify further as or background, providing an additional rejection factor at acceptable loss efficiency. trained this study...
Conceived to host 5 kg of xenon at a pressure 15 bar in the fiducial volume, NEXT- White (NEW) apparatus is currently largest high gas TPC using electroluminescent amplification world. It also 1:2 scale model NEXT-100 detector scheduled start searching for $\beta\beta 0\nu$ decays 136Xe 2019. Both detectors measure energy event plane photomultipliers located behind transparent cathode. They can reconstruct trajectories charged tracks dense with help silicon anode. A sophisticated system,...
A bstract The NEXT experiment aims at the sensitive search of neutrinoless double beta decay in 136 Xe, using high-pressure gas electroluminescent time projection chambers. NEXT-White detector is first radiopure demonstrator this technology, operated Laboratorio Subterráneo de Canfranc. Achieving an energy resolution 1% FWHM 2.6 MeV and further background rejection by means topology reconstructed tracks, has been exploited beyond its original goals order to perform a neu- trinoless search....
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...
The NEXT-White (NEW) detector is currently the largest radio-pure high-pressure xenon gas time projection chamber with electroluminescent readout in world. It has been operating at Laboratorio Subterr'aneo de Canfranc (LSC) since October 2016. This paper describes calibrations performed using 83mKr decays during a long run taken from March to November 2017 (Run II). Krypton are used correct for finite drift-electron lifetime as well dependence of measured energy on event transverse position...
We report a measurement of the half-life 136Xe two-neutrino double-β decay performed with novel direct-background-subtraction technique. The analysis relies on data collected NEXT-White detector operated 136Xe-enriched and 136Xe-depleted xenon, as well topology double-electron tracks. With fiducial mass only 3.5 kg Xe, 2.34+0.80−0.46(stat)+0.30−0.17(sys)×1021yr is derived from background-subtracted energy spectrum. presented technique demonstrates feasibility unique...
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....
A bstract Excellent energy resolution is one of the primary advantages electroluminescent high-pressure xenon TPCs. These detectors are promising tools in searching for rare physics events, such as neutrinoless double-beta decay ( ββ 0 ν ), which require precise measurements. Using NEXT-White detector, developed by NEXT (Neutrino Experiment with a Xenon TPC) collaboration, we show first time that an 1% FWHM can be achieved at 2.6 MeV, establishing present technology best all searches.
Measurements of the double-differential ${\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$ production cross section in momentum range $100\ensuremath{\leqslant}p\ensuremath{\leqslant}800$ MeV/$c$ and angle $0.35\ensuremath{\leqslant}\ensuremath{\theta}\ensuremath{\leqslant}2.15$ rad proton-beryllium, proton-carbon, proton-aluminium, proton-copper, proton-tin, proton-tantalum, proton-lead collisions are presented. The data were taken with large-acceptance HARP detector T9 beam line CERN PS....
The Laboratorio Subterráneo de Canfranc (LSC) is the Spanish national hub for low radioactivity techniques and associated scientific technological applications. concentration of airborne radon a major component radioactive budget in neighborhood detectors. LSC hosts Radon Abatement System, which delivers suppressed air with 1.1±0.2 mBq/m3 222Rn. content continuously monitored an Electrostatic Monitor. Measurements double beta decay demonstrators NEXT-NEW CROSS gamma HPGe detectors show...