S. Alves Garre
A5004496480- Astrophysics and Cosmic Phenomena
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Radio Astronomy Observations and Technology
- Particle Detector Development and Performance
- Gamma-ray bursts and supernovae
- Atomic and Subatomic Physics Research
- Radiation Detection and Scintillator Technologies
- Atmospheric Ozone and Climate
- Methane Hydrates and Related Phenomena
- Pulsars and Gravitational Waves Research
- Electron Spin Resonance Studies
- Radiation Therapy and Dosimetry
- Noncommutative and Quantum Gravity Theories
- Galaxies: Formation, Evolution, Phenomena
- Astronomy and Astrophysical Research
- Nuclear Physics and Applications
- Advanced NMR Techniques and Applications
- Nuclear physics research studies
- Gyrotron and Vacuum Electronics Research
- Muon and positron interactions and applications
Universitat de València
2020-2025
Instituto de Física Corpuscular
2020-2025
Universitat Politècnica de València
2021
Aix-Marseille Université
2021
Centre National de la Recherche Scientifique
2021
National Institute for Subatomic Physics
2021
Leiden University
2021
Friedrich-Alexander-Universität Erlangen-Nürnberg
2021
Ruhr University Bochum
2021
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud
2021
The next generation of water Cherenkov neutrino telescopes in the Mediterranean Sea are under construction offshore France (KM3NeT/ORCA) and Sicily (KM3NeT/ARCA). KM3NeT/ORCA detector features an energy detection threshold which allows to collect atmospheric neutrinos study flavour oscillation. This paper reports sensitivity this phenomenon. event reconstruction, selection classification described. determine mass ordering was evaluated found be 4.4 $\sigma$ if true is normal 2.3 inverted,...
The detection of cosmic neutrinos with energies above a teraelectronvolt (TeV) offers unique exploration into astrophysical phenomena1–3. Electrically neutral and interacting only by means the weak interaction, are not deflected magnetic fields rarely absorbed interstellar matter: their direction indicates that origin might be from farthest reaches Universe. High-energy can produced when ultra-relativistic cosmic-ray protons or nuclei interact other matter photons, observation could...
Abstract The optical module of the KM3NeT neutrino telescope is an innovative multi-faceted large area photodetection module. It contains 31 three-inch photomultiplier tubes in a single 0.44 m diameter pressure-resistant glass sphere. sensory device also comprising calibration instruments and electronics for power, readout data acquisition. capped with breakout-box connection to electro-optical cable power long-distance communication onshore control station. design was qualified first time...
Abstract The KM3NeT/ARCA neutrino detector is currently under construction at 3500 m depth offshore Capo Passero, Sicily, in the Mediterranean Sea. main science objectives are detection of high-energy cosmic neutrinos and discovery their sources. Simulations were conducted for full detector, instrumenting a volume 1 km $$^3$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mn>3</mml:mn> </mml:mmultiscripts> </mml:math> , to estimate sensitivity...
KM3NeT/ARCA is a Cherenkov neutrino telescope under construction in the Mediterranean sea, optimised for detection of astrophysical neutrinos with energies above ∼1 TeV. In this work, using Monte Carlo simulations including all-flavour neutrinos, integrated and differential sensitivities are presented considering case diffuse flux as well extended point-like sources. This analysis applied to Starburst Galaxies demonstrating that detector has capability tracing TeV from these Remarkably,...
The gSeaGen code is a GENIE-based application developed to efficiently generate high statistics samples of events, induced by neutrino interactions, detectable in telescope. able events all flavours, considering topological differences between track-type and shower-like events. Neutrino interactions are simulated taking into account the density composition media surrounding detector. main features presented together with some examples its within KM3NeT project. Program Title: CPC Library...
Abstract The KM3NeT research infrastructure is under construction in the Mediterranean Sea. It consists of two water Cherenkov neutrino detectors, ARCA and ORCA, aimed at astrophysics oscillation research, respectively. Instrumenting a large volume sea with $$\sim {6200}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>∼</mml:mo> <mml:mn>6200</mml:mn> </mml:mrow> </mml:math> optical modules comprising total {200{,}000}$$ <mml:mn>200</mml:mn> <mml:mo>,</mml:mo>...
A bstract KM3NeT/ORCA is a water Cherenkov neutrino detector under construction and anchored at the bottom of Mediterranean Sea. The designed to study oscillations atmospheric neutrinos determine mass ordering. This paper focuses on an initial configuration ORCA, referred as ORCA6, which comprises six out foreseen 115 detection units photo-sensors. high-purity sample was extracted, corresponding exposure 433 kton-years. 5828 candidates analysed following binned log-likelihood method in...
Indirect dark matter detection methods are used to observe the products of annihilations or decays originating from astrophysical objects where large amounts thought accumulate. With neutrino telescopes, an excess neutrinos is searched for in nearby reservoirs, such as Sun and Galactic Centre, which could potentially produce a sizeable flux Standard Model particles. The KM3NeT infrastructure, currently under construction, comprises ARCA ORCA undersea \v{C}erenkov detectors located at two...
KM3NeT/ORCA is an underwater neutrino telescope under construction in the Mediterranean Sea. Its primary scientific goal to measure atmospheric oscillation parameters and determine mass ordering. ORCA can constrain $\Delta m^{2}_{31}$ $\theta_{23}$ by reconstructing arrival direction energy of multi-GeV neutrinos crossing Earth. Searches for deviations from Standard Model particle physics forward scattering inside Earth matter, produced Non-Standard Interactions, be conducted investigating...
Oscillations of atmospheric muon and electron neutrinos produce tau with energies in the GeV range, which can be observed by ORCA detector KM3NeT neutrino telescope Mediterranean Sea. First measurements ORCA6, an early subarray corresponding to about 5$\%$ final detector, are presented. A sample 5828 candidates has been selected from analysed exposure 433 kton-years. The $\nu_\tau$ normalisation, defined as ratio between number expected events, is measured $S_\tau = 0.48^{+0.5}_{-0.33}$....
Lorentz invariance is a fundamental symmetry of spacetime and foundational to modern physics. One its most important consequences the constancy speed light. This invariance, together with geometry spacetime, implies that no particle can move faster than In this article, we present stringent neutrino-based test prediction, using highest energy neutrino ever detected date, KM3-230213A. The arrival event, an $220^{+570}_{-110}\,\text{PeV}$, sets constraint on $\delta \equiv c_\nu^2-1 < 4\times10^{-22}$.
The multi-messenger approach has recently paved the way for possible breakthroughs in our comprehension of high energy particle emission Universe. Neutrino telescopes are essential highlighting hadronic component these phenomena, addition to testing correlation with known sources gamma rays. Joint analyses data from complementary facilities may provide enhanced sensitivity. This contribution explores sensitivity as a function source declination combined analysis collected by two neutrino...
Abstract Neutrinos described as an open quantum system may interact with the environment which introduces stochastic perturbations to their phase. This mechanism leads a loss of coherence along propagation neutrino - phenomenon commonly referred decoherence and ultimately, modification oscillation probabilities. Fluctuations in space-time, envisaged by various theories gravity, are potential candidate for decoherence-inducing environment. Consequently, search provides rare opportunity...
The KM3NeT research infrastructure is currently under construction at two locations in the Mediterranean Sea. KM3NeT/ORCA water-Cherenkov neutrino detector off French coast will instrument several megatons of seawater with photosensors. Its main objective determination mass ordering. This work aims demonstrating general applicability deep convolutional neural networks to telescopes, using simulated datasets for as an example. To this end, are employed achieve reconstruction and...
The KM3NeT research infrastructure is under construction in the Mediterranean Sea. will study atmospheric and astrophysical neutrinos with two multi-purpose neutrino detectors, ARCA ORCA, primarily aimed at GeV-PeV neutrinos. Thanks to multi-photomultiplier tube design of digital optical modules, capable detecting burst from a Galactic or near-Galactic core-collapse supernova. This potential already exploitable first detection units deployed sea. paper describes real-time implementation...
Abstract The optical data transport system of the KM3NeT neutrino telescope at bottom Mediterranean Sea will provide more than 6000 modules in detector arrays with a point-to-point connection to control stations onshore. ARCA and ORCA detectors are being installed depth about 3500 m 2500 m, respectively their distance is 100 kilometers 40 kilometers. In particular, two optimised for detection cosmic neutrinos energies above 1 TeV (ARCA) atmospheric range GeV–1 (ORCA). expected maximum rate...
Abstract This article reports the first observation of Moon and Sun shadows in sky distribution cosmic-ray induced muons measured by KM3NeT/ORCA detector. The analysed data-taking period spans from February 2020 to November 2021, when detector had 6 Detection Units deployed at bottom Mediterranean Sea, each composed 18 Digital Optical Modules. were detected their nominal position with a statistical significance 4.2 $$\sigma $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">...
The KM3NeT infrastructure consists of two deep-sea neutrino telescopes being deployed in the Mediterranean Sea. will detect extraterrestrial and atmospheric neutrinos by means incident photons induced passage relativistic charged particles through seawater as a consequence interaction. are configured three-dimensional grid digital optical modules, each hosting 31 photomultipliers. photomultiplier signals produced Cherenkov converted into information consisting integrated pulse duration time...
The KM3NeT Collaboration is currently constructing a multi-site high-energy neutrino telescope in the Mediterranean Sea consisting of matrices pressure-resistant glass spheres, each holding set 31 small-area photomultipliers. main goals are observation sources Universe and measurement oscillation parameters with atmospheric neutrinos. A relative time synchronisation between photomultipliers nanosecond order needed to guarantee required angular resolution detector. Due large detector volumes...
Abstract Gamma-ray bursts are promising candidate sources of high-energy astrophysical neutrinos. The recent GRB 221009A event, identified as the brightest gamma-ray burst ever detected, provides a unique opportunity to investigate hadronic emissions involving KM3NeT undersea neutrino detectors participated in worldwide follow-up effort triggered by searching for events. In this paper, we summarize subsequent searches, wide energy range from MeV up few PeVs. No events found any searches...