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Listar por autor "Llorens Alvarez, Carlos David"

Mostrando ítems 1-20 de 31

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A compact acoustic calibrator for ultra-high energy neutrino detection

Adrián Martínez, Silvia; Ardid Ramírez, Miguel; Bou Cabo, Manuel; Larosa, Giuseppina; Llorens Alvarez, Carlos David; Martínez Mora, Juan Antonio (Elsevier, 2013-10-11)

With the aim to optimize and test the method of acoustic detection of ultra-high energy neutrinos in underwater telescopes a compact acoustic transmitter array has been developed. The acoustic parametric effect is used to ...
A compact array calibrator to study the feasibility of acoustic neutrino detection

Ardid Ramírez, Miguel; Camarena Femenia, Francisco; Felis-Enguix, Iván; Herrero Debón, Alicia; Llorens Alvarez, Carlos David; Martínez Mora, Juan Antonio; Saldaña-Coscollar, María (EDP Sciences, 2016)

[EN] Underwater acoustic detection of ultra-high-energy neutrinos was proposed already in 1950s: when a neutrino interacts with a nucleus in water, the resulting particle cascade produces a pressure pulse that has a bipolar ...
A method to stabilise the performance of negatively fed KM3NeT photomultipliers

Adrián Martínez, Silvia; Ardid Ramírez, Miguel; Llorens Alvarez, Carlos David; Martínez Mora, Juan Antonio; Saldaña-Coscollar, María; Ageron, M.; Aiello, S.; Albert, A.; Ameli, F.; Anassontzis, E.G.; Andre, M.; Androulakis, G.; Anghinolfi, M.; Anton, G.; Avgitas, T. (IOP Publishing, 2016-12)

[EN] The KM3NeT research infrastructure, currently under construction in the Mediterranean Sea, will host neutrino telescopes for the identification of neutrino sources in the Universe and for studies of the neutrino ...
Acoustic Parametric Signal Generation for Underwater Communication

Campo-Valera, María Mercedes; Ardid Ramírez, Miguel; Tortosa, Dídac D.; Felis-Enguix, Iván; Martínez Mora, Juan Antonio; Llorens Alvarez, Carlos David; Cervantes, Pablo (MDPI AG, 2018-07)

[EN] This paper presents a study of different types of parametric signals with application to underwater acoustic communications. In all the signals, the carrier frequency is 200 kHz, which corresponds to the resonance ...
Acoustic parametric techniques for neutrino telescopes

Ardid Ramírez, Miguel; Tortosa, Dídac D.; Llorens Alvarez, Carlos David; Martínez Mora, Juan Antonio; Saldaña-Coscollar, María (EDP Sciences, 2019)

[EN] In this work, we present a compact transmitter array based on the parametric acoustic sources effect able to reproduce the acoustic signature of an Ultra-High Energy neutrino interaction in water. We also propose to ...
Acoustic signal detection through the cross-correlation method in experiments with different signal to noise ratio and reverberation conditions

Adrián Martínez, Silvia; Bou Cabo, Manuel; Felis, I.; Llorens Alvarez, Carlos David; Martínez Mora, Juan Antonio; Saldaña, M.; Ardid Ramírez, Miguel (Springer Verlag (Germany), 2015-02-10)

[EN] The study and application of signal detection techniques based on cross-correlation method for acoustic transient signals in noisy and reverberant environments are presented. These techniques are shown to provide ...
Acoustic Transmitters for Underwater Neutrino Telescopes

Ardid Ramírez, Miguel; Martínez Mora, Juan Antonio; Bou Cabo, Manuel; Larosa ., Giuseppina; Adrián Martínez, Silvia; Llorens Alvarez, Carlos David (MDPI, 2012)

In this paper acoustic transmitters that were developed for use in underwater neutrino telescopes are presented. Firstly, an acoustic transceiver has been developed as part of the acoustic positioning system of neutrino ...
Combined sensitivity of JUNO and KM3NeT/ORCA to the neutrino mass ordering

Aiello, S.; Albert, A.; Alshamsi, M.; Alves Garre, S.; Aly, Z.; Ambrosone, A.; Ameli, F.; Andre, M.; Androulakis, G.; Anghinolfi, M.; Anguita, M.; Ardid Ramírez, Miguel; Ardid-Ramírez, Joan Salvador; Aublin, J.; Bagatelas, C.; Bou Cabo, M.; Diego-Tortosa, D.; Espinosa Roselló, Víctor; García-Méndez, J.; Llorens Álvarez, Carlos David; Martínez Mora, Juan Antonio; Poirè, Chiara (Springer-Verlag, 2022-03-09)

[EN] This article presents the potential of a combined analysis of the JUNO and KM3NeT/ORCA experiments to determine the neutrino mass ordering. This combination is particularly interesting as it significantly boosts the ...
Deep sea tests of a prototype of the KM3NeT digital optical module

Adrián Martínez, Silvia; Ageron, M.; Aharonian, F.; Aiello, S.; Albert, A.; Ameli, F.; Anassontzis, E.G.; Anghinolfi, M.; Anton, G.; Anvar, S.; Ardid Ramírez, Miguel; Asmundis, R. de; Balasi, K.; Llorens Alvarez, Carlos David; Martínez Mora, Juan Antonio (Springer Verlag (Germany): SCOAP3, 2014-09)

[EN] The first prototype of a photo-detection unit of the future KM3NeT neutrino telescope has been deployed in the deepwaters of the Mediterranean Sea. This digital optical module has a novel design with a very large ...
Dependence of atmospheric muon flux on seawater depth measured with the first KM3NeT detection units The KM3NeT Collaboration

Ageron, M.; Aiello, S.; Ameli, F.; Andre, M.; Androulakis, G.; Anghinolfi, M.; Anton, G.; Ardid Ramírez, Miguel; Aublin, J.; Bagatelas, C.; Barbarino, G.; Baret, B.; du Pree, S. Basegmez; Belias, A.; Berbee, E.; Tortosa, Dídac D.; Llorens Alvarez, Carlos David; Martínez Mora, Juan Antonio; Poirè, Chiara (Springer-Verlag, 2020-02-06)

[EN] KM3NeT is a research infrastructure located in the Mediterranean Sea, that will consist of two deep-sea Cherenkov neutrino detectors. With one detector (ARCA), the KM3NeT Collaboration aims at identifying and studying ...
Desarrollo de un emisor de ultrasonidos para posicionar el telescopios de neutrinos KM3Net

Llorens Alvarez, Carlos David (Universitat Politècnica de València, 2012-01-30)

Recientemente se están empezando a desarrollar los telescopios de neutrinos, el objetivo principal de dichos telescopios es el de detectar flujos de neutrinos provenientes de eventos cósmicos de gran energía. Para lograr ...
Design and first tests of an acoustic positioning and detection system for KM3NeT

Simeone, F.; Ameli, F.; Ardid Ramírez, Miguel; Bertin, V.; Bonori, M.; Bou Cabo, Manuel; Llorens Alvarez, Carlos David; Cali, C.; D'Amico, A.; Giovanetti, G.; Imbesi, M.; Keller, P.; Larosa, Giuseppina; Masullo, R.; Randazzo, N. (Elsevier, 2012-01-11)

In a deep-sea neutrino telescope it is mandatory to locate the position of the optical sensors with a precision of about 10 cm. To achieve this requirement, an innovative Acoustic Positioning System (APS) has been designed ...
Detection potential of the KM3NeT detector for high-energy neutrinos from the Fermi bubbles

Adrián Martínez, Silvia; Ageron, M.; Aguilar, J. A.; Aharonian, F.; Aiello, S.; Albert, A.; Alexandri, M.; Ardid Ramírez, Miguel; Bou Cabo, Manuel; Espinosa Roselló, Víctor; Ferri García, Marcelino; Larosa, Giuseppina; Llorens Alvarez, Carlos David; Lloret, Jaime; Martínez Mora, Juan Antonio (Elsevier, 2013-02)

[EN] A recent analysis of the Fermi Large Area Telescope data provided evidence for a high-intensity emission of high-energy gamma rays with a E- 2 spectrum from two large areas, spanning 50º above and below the Galactic ...
Development of an acoustic transceiver for the KM3NeT positioning system

Larosa, Giuseppina; Ardid Ramírez, Miguel; Llorens Alvarez, Carlos David; Bou Cabo, Manuel; Martínez Mora, Juan Antonio; Adrián Martínez, Silvia; KM3NeT Consortium (Elsevier, 2013-10-11)

[EN] In this paper we describe an acoustic transceiver developed for the KM3NeT positioning system. The acoustic transceiver is composed of a commercial free flooded transducer, which works mainly in the 20-40 kHz frequency ...
Diseño y desarrollo de la electrónica de los emisores acústicos para los sistemas de posicionamiento y calibración de telescopios submarinos de neutrinos

Llorens Alvarez, Carlos David (Universitat Politècnica de València, 2017-10-02)

Neutrino telescopes are a new way of looking at the Universe. For more than a decade these structures are being designed to study the Universe from a new point of view, that is, from the particles generated in the cosmic ...
Expansion cone for the 3-inch PMTs of the KM3NeT optical modules

Adrián Martínez, Silvia; Ageron, M.; Aguilar, J. A.; Aharonian, F.; Aiello, S.; Albert, A.; Alexandri, M; Ameli, F.; Ardid Ramírez, Miguel; Bou Cabo, Manuel; Espinosa Roselló, Víctor; Ferri García, Marcelino; Llorens Alvarez, Carlos David; Lloret, Jaime; Martínez Mora, Juan Antonio (IOP Publishing: Hybrid Open Access, 2013-03)

[EN] Detection of high-energy neutrinos from distant astrophysical sources will open a new window on the Universe. The detection principle exploits the measurement of Cherenkov light emitted by charged particles resulting ...
Implementation and first results of the KM3NeT real-time core-collapse supernova neutrino search

Aiello, S.; Albert, A.; Alshamsi, M.; Alves Garre, S.; Aly, Z.; Ambrosone, A.; Ameli, F.; Andre, M.; Androulakis, G.; Anghinolfi, M.; Anguita, M.; Ardid Ramírez, Miguel; Ardid-Ramírez, Joan Salvador; Aublin, J.; Bagatelas, C.; Bou Cabo, Manuel; Diego-Tortosa, Dídac; Espinosa Roselló, Víctor; Llorens Alvarez, Carlos David; Martínez Mora, Juan Antonio; Poirè, Chiara (Springer-Verlag, 2022-04-11)

[EN] The KM3NeT research infrastructure is uncon- struction in the Mediterranean Sea. KM3NeT will study atmospheric and astrophysical neutrinos with two multi- purpose neutrino detectors, ARCA and ORCA, primar-ily aimed ...
Intrinsic limits on resolutions in muon and electron-neutrino charged-current events in the KM3NeT/ORCA detector

Adrián Martínez, Silvia; Ageron, M.; Aiello, S.; Albert, A.; Ameli, F.; Anassontzis, E. G.; Andre, M.; Androulakis, G.; Anghinolfi, M.; Anton, G.; Ardid Ramírez, Miguel; Avgitas, T.; Barbarino, G.; Barbarito, E.; Baret, B.; Llorens Alvarez, Carlos David; Martínez Mora, Juan Antonio; Saldaña-Coscollar, María (Springer-Verlag, 2017-05-02)

[EN] Studying atmospheric neutrino oscillations in the few-GeV range with a multimegaton detector promises to determine the neutrino mass hierarchy. This is the main science goal pursued by the future ...
Letter of intent for KM3NeT 2.0

Adrián Martínez, Silvia; Ardid Ramírez, Miguel; Llorens Alvarez, Carlos David; Martínez Mora, Juan Antonio; Saldaña-Coscollar, María; Ageron, M.; Aharonian, F.; Aiello, S.; Albert, A.; Ameli, F.; Anassontzis, E.; Andre, M.; Androulakis, G.; Anghinolfi, M.; Anton, G. (IOP Publishing, 2016-08)

[EN] The main objectives of the KM3NeT Collaboration are (i) the discovery and subsequent observation of high-energy neutrino sources in the Universe and (ii) the determination of the mass hierarchy of neutrinos. These ...
Long term monitoring of the optical background in the Capo Passero deep-sea site with the NEMO tower prototype

Adrián Martínez, Silvia; Aiello, S.; Ameli, F; Anghinolfi, M.; Ardid Ramírez, Miguel; Barbarino, G.; Barbarito, E.; Barbato, F. C. T.; Beverini, N.; Biagi, S.; Biagioni, A.; Bouhadef, B.; Bozza, C.; Llorens Alvarez, Carlos David; Saldaña Coscollar, María (Springer, 2016-02)

The NEMO Phase-2 tower is the first detector which was operated underwater for more than 1 year at the "record" depth of 3500 m. It was designed and built within the framework of the NEMO (NEutrino Mediterranean Observatory) ...