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14/09/2015, 09:00
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Markus Ahlers14/09/2015, 09:10Extragalactic sources are believed to dominate the ultra-high energy cosmic ray (CR) spectrum beyond the CR "knee". These sources are also expected to produce very high-energy neutrinos via interactions with gas and radiation during acceleration and emission of CRs or during CR propagation over cosmic distances. I will focus in my talk on extragalactic source candidates of the TeV-PeV neutrino...Go to contribution page
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Francesco Vissani (INFN - LNGS)14/09/2015, 09:40IceCube has changed the rules of the game and it continues to progress. Remarkably, the observations are compatible with the known neutrino oscillations. Moreover, the topologies of the events have been used to probe exotic physics. Still, we need independent confirmations; the connections of IceCube's neutrinos with astronomical/astrophysical facts heavily rely on speculations--excepting...Go to contribution page
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Paolo Giommi14/09/2015, 10:10I will present some of the most recent results from the Fermi gamma-ray space telescope with emphasis on the latest catalogs (e.g. 3FGL, 3LAC and 2FHL) and on the class of blazars. I will also discuss the contribution of blazars to the extragalactic gamma-ray, VHE and the neutrino background. These results are based on Fermi detected sources, Monte Carlo simulations and on a new large sample...Go to contribution page
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Tyce DeYoung (Michigan State University)14/09/2015, 11:00Data from the IceCube Neutrino Observatory has revealed the existence of a flux of high energy neutrinos of extraterrestrial origin, which is observed in a number of analyses spanning different energy ranges, fields of view, and neutrino flavors. The current data are consistent with an isotropic, equal-flavor flux described by a simple power law spectrum, but deviations from this simple model...Go to contribution page
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maurizio spurio (University of Bologna (Italy))14/09/2015, 11:20The ANTARES experiment has been running in its final configuration since 2008. It is the largest neutrino telescope in the Northern hemisphere. After the discovery of a cosmic neutrino diffuse flux by the IceCube detector, the search for its origin has become a key mission in high-energy astrophysics. The ANTARES sensitivity is large enough to constrain the origin of the IceCube excess from...Go to contribution page
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Zhan Dzhilkibaev14/09/2015, 11:40The future next-generation neutrino telescope Baikal-GVD will be km$^3$-scale array aimed at detection of astrophysical neutrino fluxes. It will have modular structure and consist of functionally independent sub-arrays – clusters of strings of optical modules. The prototyping phase of the project has been concluded in 2015 with deployment of the first cluster of Baikal-GVD in Lake Baikal. We...Go to contribution page
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Prof. Kael Hanson (University of Wisconsin - Madison)14/09/2015, 12:10New groups from the astroparticle physics community have joined an enlarged IceCube Collaboration to pursue construction of a next-generation very large volume neutrino telescope at the South Pole site. This new collaboration, called the IceCube-Gen2 collaboration, hopes to bring forth an instrument that will further push the recently expanded frontiers of knowledge in the field of neutrino...Go to contribution page
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rosa coniglione (INFN)14/09/2015, 12:45The discovery of a diffuse flux by the IceCube collaboration of extra-terrestrial origin from not identified sources requires a next generation neutrino telescopes with full sky coverage and good angular resolution. The KM3NeT Collaboration aims at building a research infrastructure in the depths of the Mediterranean Sea hosting a several cubic kilometre neutrino telescope. KM3NeT, in its...Go to contribution page
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Martin Jurkovic (TUM)14/09/2015, 14:20We present here a new idea of an in-situ self-calibrated isotropic light source for the future IceCube-Gen2 neutrino detector called the Precision Optical CAlibration Module (POCAM). IceCube-Gen2 will be a matrix of light sensors buried deep in the ice at the geographical South Pole. The timing, the location and the amount of Cherenkov light deposited by the secondary charged particles are...Go to contribution page
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Daniele Vivolo14/09/2015, 14:20KM3NeT is a European deep-sea multidisciplinary research infrastructure in the Mediterranean Sea. It will host a km3-scale neutrino telescope and dedicated instruments for long-term and continuous measurements for Earth and Sea sciences. The KM3NeT neutrino telescope is a 3-dimensional array of Digital Optical Modules, suspended in the sea by means of vertical string structures, called...Go to contribution page
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Antonia Hubbard14/09/2015, 14:40DM-Ice17 is a NaI(Tl) experiment deployed directly below the IceCube Neutrino Observatory in the South Pole ice. It is comprised of two detectors, each containing a 5.5'' diameter, 6'' tall cylindrical scintillator. Muons are identified in DM-Ice17 by their event topology in the scintillator, and a high portion of tagged muons are coincident with events in IceCube. A study of these coincident...Go to contribution page
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Alexander Kappes (Friedrich-Alexander-Univ. Erlangen (DE))14/09/2015, 14:50IceCube-Gen2 is the planned next generation neutrino telescope at the South Pole incorporating a high-energy array for neutrino astronomy and a dense array (PINGU) aimed at the determination of the neutrino mass hierarchy. The contribution presents alternatives to IceCube-Gen2’s single-PMT baseline design which are currently being developed. These designs feature up to 24 smaller...Go to contribution page
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Vladimir Aynutdinov (INR RAS, Moscow)14/09/2015, 15:00The first stage of the Baikal-GVD neutrino telescope will be composed of more than two thousand light sensors, Optical Modules (OMs), installed deep underwater in Lake Baikal. We describe developed calibration methods which use OM LEDs, atmospheric muons and discuss the performance of these methods.Go to contribution page
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Matteo Sanguineti (INFN Genova - Università di Genova)14/09/2015, 15:20The ANTARES detector is the largest neutrino telescope currently in operation in the North Hemisphere, while KM3NeT is a future new generation neutrino telescope with a volume of a cubic-kilometres that will be located at the bottom of the Mediterranean Sea. The point-like neutrino search is one of the main goal of the neutrino telescopes, therefore the evaluation of the pointing performance...Go to contribution page
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Алексей Шейфлер14/09/2015, 15:20The Baikal-GVD neutrino telescope in Lake Baikal is intended for studying astrophysical neutrino fluxes by recording the Cherenkov radiation of the secondary muons and showers generated in neutrino interactions. The first stage of Baikal-GVD will be equipped with about 2300 optical modules. Each of these optical modules consists of a large area photomultiplier R7081-100 made by Hamamatsu...Go to contribution page
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Vladimir Kulikovskiy (LNS)14/09/2015, 15:40The detector of the KM3NeT telescope composed of several thousands digital optical modules is in the process of its realization in the Mediterranean Sea. Each optical module contains 31 3-inch pre-calibrated photomultipliers. Readout of the optical modules and other detector components is synchronized at the level of sub-nanoseconds. The position of the module is measured by acoustic piezo...Go to contribution page
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Andy Cormack14/09/2015, 15:50
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Gerard Kieft (Nikhef National institute for subatomic physics (NL))14/09/2015, 16:00The construction of the KM3NeT neutrino telescope in the abyss of the Mediterranean Sea has started. Installation of in total 30 vertical detection units, each supporting 18 optical modules with 31 photomultipliers is foreseen in the first construction phase of the telescope. The KM3NeT timing calibration uses the optical system to send and fan-out an onshore clock signal, derived from a GPS...Go to contribution page
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Francesco Simeone (INFN)14/09/2015, 16:40In underwater neutrino telescopes, the search of point-like sources through the Cherenkov detection technique requires a precise knowledge of the positions of thousands of optical sensors, spread in a volume of a few cubic kilometres. In KM3NeT the optical sensors are hosted in 700 m high semi-rigid structures, called detection units, which move under the effects of underwater currents. These...Go to contribution page
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Carlos Maximiliano Mollo (INFN)14/09/2015, 16:40Since almost a century photomultipliers have been the main sensors for photon detection in nuclear and astro-particle physics experiments. In recent years the search for cosmic neutrinos gave birth to enormous size experiments (Kamiokande, Super-Kamiokande, etc.) and even kilometric scale experiments as ICECUBE, Antares, and the future KM3NeT. A very large volume neutrino telescope requires...Go to contribution page
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R. Lahmann (-)14/09/2015, 16:55The acoustic neutrino detection technique is a promising approach for future large-scale detectors with the aim of measuring the small expected flux of cosmogenic neutrinos at energies exceeding 100 PeV. It suggests itself to investigate this technique in the context of underwater Cherenkov neutrino telescopes, in particular KM3NeT, because acoustic sensors are present by design to allow for...Go to contribution page
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Antoine David Kouchner (Universite de Paris VII (FR)), Bruny Baret (CNRS)14/09/2015, 17:00As has been demonstrated by the first generation of neutrino telescopes Antares and IceCube, precise knowledge of the photon detection efficiency of optical modules is of fundamental importance for the understanding of the instrument and accurate event reconstruction. Dedicated test benches have been developped to measure all related quantities for the Digital Optical Modules of the KM3NeT...Go to contribution page
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Ernst-Jan Buis (TNO)14/09/2015, 17:10Acoustic detection may provide way to observe ultra-high energy cosmic neutrinos, i.e. energies above 10$^{18}$ eV, and their extra-galactic sources [1, 2]. The expected flux of cosmic neutrinos with ultra-high energy is low, so that large scale neutrino telescopes are needed for this emerging field of astroparticle physics. Using the acoustic signals induced by a neutrino interaction in...Go to contribution page
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Antoine David Kouchner (Universite de Paris VII (FR)), Bruny Baret (CNRS)14/09/2015, 17:20KM3NeT is a network of deep-sea neutrino telescopes to be deployed in the Mediterranean Sea, that will perform neutrino astronomy and oscillation studies. It consists of three-dimensional arrays of thousands of optical modules that detect the Cherenkov light induced by charged particles resulting from the interaction of a neutrino with the surrounding medium. The performance of the...Go to contribution page
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Miguel Ardid (UPV)14/09/2015, 17:25Underwater acoustic detection of ultra-high-energy neutrinos was proposed long time ago since a short bipolar pressure pulse with ‘pancake’ directivity is produced and propagated when this particle interacts with a nucleus in water. The idea is to build a telescope that consists of thousands of acoustic sensors deployed in deep-sea that will monitor hundreds of cubic kilometres of water...Go to contribution page
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Prof. Albrecht KARLE (Univ. of Wisconsin-Madison)14/09/2015, 17:40The observation of cosmic neutrinos can offer insights into the sources of highest energy cosmic rays and energetic process that are involved to generate them. IceCube has reported neutrinos with energies beyond 10$^{15}$ eV. Much larger detection volumes are needed to fully explore the energy region beyond 10 or 100 PeV. The Askaryan Radio Array (ARA) is designed to use the...Go to contribution page
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Giulia De Bonis14/09/2015, 17:40The first implementation of the KM3NeT-IT neutrino telescope foresees the installation of 24 Strings, equipped with multi-PMTs Digital Optical Modules, and 8 Towers. The Tower's optical module (OM) is composed by a 10’' photomultiplier tube (PMT) enclosed in a 13’’ pressure resistant glass sphere that contains also the electronics boards for power supply and data acquisition; some OMs host a...Go to contribution page
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Allan Hallgren (Uppsala University)14/09/2015, 17:55Detection of neutrinos in the EeV range by observation of radio pulses from the Askaryan effect is proposed by several collaborations. The ARIANNA collaboration is one of them. ARIANNA investigates the possibility to use the unique conditions of the Ross Ice-shelf. The site is isolated with very low levels of anthropogenic radio noise. Reflection of radio signals on the mirror-like ice-sea...Go to contribution page
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Martin Rongen (RWTH Aachen)14/09/2015, 18:00The IceCube Neutrino Observatory deployed 5160 digital optical modules (DOMs) in a cubic kilometer of deep ice below the South Pole that record the Cherenkov light of passing charged particles. A good understanding of the ice is crucial to the quality of calibration and event reconstruction. While the optical properties of the undisturbed ice are reasonably well understood, the properties of...Go to contribution page
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Olivier Martineau (CNRS)14/09/2015, 18:10High-energy neutrino astronomy will probe the working of the most violent phenomena in the Universe. The GRAND (Giant Radio Array for Neutrino Detection) project consists of an array of 200 000 radio antennas deployed over a total area of 200 000 km2 in a mountainous site. The array aims at detecting high energy neutrinos (E>10^16 eV) via the measurement of air showers induced by the decay in...Go to contribution page
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Nikos Maragos (NATIONAL CENTER FOR SCIENTIFIC RESEARCH "DEMOKRITOS")14/09/2015, 18:20The deep-sea neutrino telescope in the Mediterranean Sea, being prepared by the KM3NET collaboration, will contain thousands of optical sensors to readout. The accurate knowledge of the optical properties of deep-sea water is of great importance for the neutrino event reconstruction process. In this study we describe our progress in designing an experimental setup and studying a method to...Go to contribution page
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Eligio Lisi (INFN, Bari, Italy)15/09/2015, 09:00We present the status of three-neutrino oscillations from a global data analysis, including a partial 2015 update, with emphasis on the unknown parameters: CP phase, $\theta_{23}$ octant, mass hierarchy. We also discuss the unprecedented challenges set by (non)parametric systematic uncertainties in hierarchy-sensitive experiments characterized by very high statistics, such as ORCA and PINGU.Go to contribution page
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Dorothea Samtleben (Leiden University)15/09/2015, 09:30Neutrinos created in interactions of Cosmic Rays with the atmosphere have already for a long time been exploited for measurements of several of the parameters characterizing neutrino oscillations. At low energies, around a few GeV, matter effects from the transition through the Earth are expected to imprint a distinct but also subtle signature on the oscillation pattern specific to the...Go to contribution page
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Juan-Pablo Yanez (DESY)15/09/2015, 10:00Very large volume neutrino telescopes observe atmospheric neutrinos over a wide energy range (GeV to TeV), after they travel distances as large as the Earth's diameter. DeepCore, the low energy extension of IceCube, has started making meaningful measurements of the neutrino oscillation parameters $\theta_{23}$ and $|\Delta m^2_{32}|$ by analyzing this flux. PINGU, a proposed extension to lower...Go to contribution page
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Dustin Hebecker15/09/2015, 11:00
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Miguel Ardid (UPV)15/09/2015, 11:00One of the main objectives of the ANTARES neutrino telescope is the search for neutrinos produced in self-annihilation of Dark Matter (DM) particles. The analysis for different sources of DM (Sun, Galactic Center, Earth, …) or DM models (SUSY, Secluded) will be described and the results presented. The specific advantages of neutrino telescopes in general and of ANTARES in particular will be...Go to contribution page
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Prof. Kael Hanson (University of Wisconsin - Madison)15/09/2015, 11:00The IceCube Detector Operations group continues to improve reliability and add new functionality to the data acquisition (DAQ) and online system as the science of IceCube expands. Following a brief overview of the baseline design which has been running for nearly a decade and highlights of the operational performance of the implementation, this presentation will go on to describe a recent...Go to contribution page
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Denis Kuleshov15/09/2015, 11:18The objective of the Baikal-GVD project is the construction of a km3-scale neutrino telescope in Lake Baikal. The first GVD-cluster with 192 optical modules has been deployed and commissioned in April 2015. The data acquisition system (DAQ) of the detector takes care of the digitization of the photo-multiplier tube signals, data transmission, filtering and storage. The design and the...Go to contribution page
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Mr Stefan Coenders (Technische Universität München)15/09/2015, 11:20The IceCube Neutrino Observatory located at the geographic South Pole was designed to study and discover high energy neutrinos coming from both galactic and extragalactic astrophysical sources. Track-like events induced by charged-current muon-neutrino interactions close to the IceCube detector give an angular resolution better than 1° above TeV energies. We present here the results of...Go to contribution page
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Francesco Di Capua (INFN)15/09/2015, 11:20The VSiPMT (Vacuum Silicon PhotoMultiplier Tube) is an innovative design for a revolutionary hybrid photodetector. The idea, born with the purpose to use a SiPM for large detection volumes, consists in replacing the classical dynode chain with a SiPM. In this configuration, we match the large sensitive area of a photocathode with the performances of the SiPM technology, which therefore...Go to contribution page
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Carmelo Pellegrino (INFN)15/09/2015, 11:36KM3NeT is a large research infrastructure in the Mediterranean Sea that includes a network of deep-sea neutrino telescopes. The telescopes consist of vertical detection units carrying optical modules, whose separation is optimised according to the different ranges of neutrino energy that shall be explored. Two building blocks, each one made of 115 detection units, will be deployed at the...Go to contribution page
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Mr Yuji Hotta Hotta (Hamamatsu)15/09/2015, 11:40Hamamatsu has been providing various types of vacuum photon detectors in many fields for many years. We will show the latest developmental status for our PMTs.Go to contribution page
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Sebastian Euler (Uppsala University)15/09/2015, 11:40Due to the overwhelming background of atmospheric muons, traditional IceCube point source searches in the Southern Hemisphere are sensitive only at neutrino energies above 100 TeV. We will report on a new approach, which focuses on events starting inside the instrumented volume of the IceCube detector. By utilizing different veto techniques we are able to significantly reduce the energy...Go to contribution page
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Diego Real (IFIC)15/09/2015, 11:51KM3NeT is a European research facility that is being built in the Mediterranean Sea and that will house a neutrino telescope of cubic kilometer scale. Cherenkov light from neutrino induced secondary particles will be detected by an array of optical modules consisting in high pressure resistant glass vessels with photomultipliers inside, called Digital Optical Modules. This vessel is composed...Go to contribution page
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Agata Trovato (INFN)15/09/2015, 12:00KM3NeT is a large research infrastructure with a network of deep-sea neutrino telescopes in the abyss of the Mediterranean Sea. Of these, the KM3NeT/ARCA detector, installed in the KM3NeT-It node of the network, is optimised for studying high-energy neutrinos of cosmic origin. Thanks to its geographical location in the Northern hemisphere, KM3NeT/ARCA can observe most of the Galactic Plane,...Go to contribution page
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Dr Christian Dille (Hamamatsu Photonics Deutschland GmbH)15/09/2015, 12:00In the year 2014 a new generation of low cross-talk MPPCs has been introduced. Due to further improvements in the manufacturing processes, it is now possible to commercially offer MPPCs, which combine low cross-talk and low after pulse features with a significantly increased photo-detection efficiency (PDE). Besides the capability to manufacture large sized MPPC arrays with high element fill...Go to contribution page
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David Calvo (IFIC)15/09/2015, 12:06The KM3NeT collaboration aims the construction of a multi-km3 high-energy neutrino telescope in the Mediterranean sea consisting of thousands of glass spheres, each of them containing 31 photomultiplier of small photocathode area. The main digitization system is composed by 31 Time to Digital Converter channels with 1-ns resolution embedded in a Field Programmable Gate Array. An architecture...Go to contribution page
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Sara Rita Pulvirenti (INFN - National Institute for Nuclear Physics)15/09/2015, 12:18KM3NeT is a future research infrastructure hosting a network of neutrino telescopes in the abyss of the Mediterranean Sea. The whole data transport over an optical network is based on the Dense Wavelength Division Multiplexing technique with optical channels spaced 50 GHz apart and a bit rate of 1.25Gbps. Over the telescope life time, precise temperature control of the laser is required to...Go to contribution page
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Mr Barrios-Martí Javier (IFIC (CSIC-UV))15/09/2015, 12:20A search for cosmic neutrino point-like sources using the ANTARES and IceCube neutrino telescopes over the Southern Hemisphere is presented. The ANTARES data was collected between January 2007 and December 2012, whereas the IceCube data ranges from April 2008 to May 2011. Clusters of muon neutrinos over the diffusely distributed background have been looked for by means of an unbinned maximum...Go to contribution page
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Valentina Giordano (INFN)15/09/2015, 12:20Photomultipliers are widely used in astroparticle physics detectors to measure Cherenkov light in media like water or ice. KM3NeT neutrino telescope will be the largest underwater neutrino telescope and will be located in the abyss of the Mediterranean Sea. The detection principle is based on the measurement of the Cherenkov light induced by relativistic charged particles emerging from an...Go to contribution page
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Cristiano Bozza (University of Salerno)15/09/2015, 12:33KM3NeT is a future research infrastructure hosting a new generation neutrino telescope located at the bottom of the deep seas of the Mediterranean. With the KM3NeT telescope, scientists will search for cosmic neutrinos to study highly energetic objects in the Universe. A new initiative is to extend the research facility with a neutrino detector dedicated to measure the properties of the...Go to contribution page
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Antoine David Kouchner (Universite de Paris VII (FR)), Bruny Baret (CNRS)15/09/2015, 12:40No transient or steady significant signal having been found so far from individual source, we investigate potential collective effects in the spacial or temporal domains in Antares data samples. On the one hand, we use a two point correlation analysis to look for inhomogeneities in the arrival directions of the high energy muon neutrino candidates detected by the ANTARES neutrino telescope....Go to contribution page
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Tamas Gal (University of Erlangen)15/09/2015, 12:48KM3NeT is a new generation neutrino telescope in the abyss of the Mediterranean Sea. It will instrument a volume of several cubic kilometres of sea water in its final configuration. Currently, the project is in its first phase with the aim of constructing and installing 31 detection units up to 700m in height, each equipped with 18 digital optical modules. The optical modules are equipped with...Go to contribution page
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Dr Emanuele Leonora (INFN-sezione di Catania)15/09/2015, 14:00The KM3NeT European project aims to construct a large volume underwater neutrino telescope in the depths of the Mediterranean Sea. Thanks to a dedicated funding by the Italian Ministry of Education, University and Research (MIUR) in its first phase, referred as KM3NeT-Italia, an 8-towers detector is under construction. The detection element of the telescope, the optical module, is composed by...Go to contribution page
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Dr Konstantinos Manolopoulos (University of Athens)15/09/2015, 14:00GRBNeT is a Gamma Ray Burst Neutrino Telescope made of autonomously operated arrays of deep-sea light detectors, anchored to the sea-bed without any cabled connection to the shore. This paper presents the digital and analog electronics that we have designed and developed for the GRBNeT prototype. We describe the requirements for these electronics and present their design and functionality. We...Go to contribution page
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Antonio Marinelli (Institute of Physics, Pisa)15/09/2015, 14:00The IceCube collaboration recently released the results of an updated measurement of the astrophysical neutrino flux based on four years of observation. The origin of this emission is still unknown due to the large uncertainties related to the poor angular resolution of shower-like events. While the present results are consistent with a isotropic flux a recent maximum-likelihood analysis of...Go to contribution page
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Matteo Favaro (INFN - National Institute for Nuclear Physics)15/09/2015, 14:18KM3NeT-Italia is an INFN project supported with Italian PON fundings for building the core of the Italian node of the KM3NeT neutrino telescope. The detector, made of 700 10" optical modules (OMs) lodged along 8 vertical structures called {\em towers}, will be deployed starting from fall 2015 at the KM3NeT-It site, about 100 km off Capo Passero, Italy, 3500 m deep. The {\em all data to...Go to contribution page
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Riccardo PAPALEO (INFN LNS)15/09/2015, 14:20The KM3NeT European project aims to construct a large volume underwater neutrino telescope in the depths of the Mediterranean Sea. INFN and KM3NeT collaboration, thanks to a dedicated funding of 21.000.000 (PON 2007-2013), are committed to building and deploying the Phase 1 of the telescope, composed of a network of detection units: 8 towers, equipped with single PMT optical modules, and 24...Go to contribution page
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Luigi Antonio Fusco (University of Bologna)15/09/2015, 14:20The existence of cosmic neutrinos has been reported by the IceCube Collaboration. Though this measurement is consistent with an isotropic neutrino flux, a sub-dominant galactic component coming from extended region such as the Galactic Plane/Ridge cannot be excluded. The ANTARES detector, located in the Mediterranean Sea, is currently the largest and longest operated under-water neutrino...Go to contribution page
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Carlo Alessandro Nicolau (INFN - National Institute for Nuclear Physics)15/09/2015, 14:33The KM3NeT European project has entered the production stage of a large volume neutrino telescope that will be deployed at about 100 km off the Sicily coast. The forthcoming installation includes 24 strings, equipped with multi-PMT optical modules, and 8 towers. The KM3NeT tower design is based on the NEMO Phase-2 prototype tower, deployed in March 2013. In order to optimize production costs,...Go to contribution page
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Zhan Dzhilkibaev15/09/2015, 14:40Currently the next-generation km3-scale neutrino telescope Baikal-GVD is under construction in Lake Baikal. It will have modular structure and consist of functionally independent sub-arrays – clusters of strings of optical modules. The first cluster of Baikal-GVD christened “Dubna” was deployed and commissioned in April 2015 in Lake Baikal. We discuss the expected performance of the “Dubna”...Go to contribution page
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Patrick Lamare (CNRS)15/09/2015, 14:40The MEUST (Mediterranean Eurocentre for Underwater Sciences and Technologies) is a permanent deep sea cabled infrastructure currently being deployed off shore of Toulon, France. MEUST is shared between the neutrino physics and astro-physics communities in the context of the European KM3NeT project, and the Environmental Science communities as the West-Ligurian site of the EMSO European...Go to contribution page
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Andrea Biagioni (INFN)15/09/2015, 14:48The KM3Net-Italia underwater neutrino detection unit, the tower, consists of 14 floors. Each floor supports 6 Optical Modules containing front-end electronics needed to digitize the PMT signal, format and transmit the data and 2 hydrophones used to reconstruct in real-time the position of Optical Modules, for a maximum tower throughput of more than 600 MB/s. All floor data are collected by...Go to contribution page
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Konstantinos Pikounis (NCSR Demokritos)15/09/2015, 15:00GRBNeT is a project aiming at the detection of ultra-high energy neutrinos, for example neutrinos originating from Gamma Ray Bursts. The goal is to design, construct and test-deploy a prototype unit of an autonomous (data/energy-wise) neutrino detector. Being autonomous is crucial since for the detection of ultra-high energy neutrinos a very large volume of water is required. Large...Go to contribution page
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Luigi Antonio Fusco (University of Bologna)15/09/2015, 15:00The KM3NeT Collaboration has started the construction of a research infrastructure hosting a network of underwater neutrino observatories in the Mediterranean Sea. Two telescopes based on the same technology are being built: KM3NeT/ORCA to measure the neutrino mass hierarchy and to study atmospheric neutrino oscillations and KM3NeT/ARCA to detect high-energy cosmic neutrinos both in diffuse...Go to contribution page
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David Schultz (University of Wisconsin-Madison)15/09/2015, 15:10IceCube's simulation production relies largely on dynamic, heterogeneous resources spread around the world. Datasets consist of many thousands of job workflow subsets running in parallel as directed acyclic graphs (DAGs) and using varying resources. IceProd is a set of python daemons which process job workflow and maintain configuration and status information on jobs before, during, and after...Go to contribution page
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Javier Gonzalez (Bartol Research Institute, Univ Delaware)15/09/2015, 15:20Motivated by the discovery of high-energy astrophysical neutrinos with IceCube, we study the prospects for improved measurements of neutrinos of astrophysical origin with a surface detector array combined with IceCube or a next generation neutrino detector at the South Pole. The background in astrophysical neutrino searches is reduced by tagging muons and neutrinos of atmospheric origin...Go to contribution page
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Igor Belolaptikov15/09/2015, 15:20Currently the next-generation km3-scale neutrino telescope Baikal-GVD is under construction in Lake Baikal. Assembling of Gigaton Volume Detector (GVD) is highly dependent on an ice cover on Lake Baikal. This cover, used as stable platform, gives a lot of benefits for GVD deployment, but makes a strict timeline constraints. So, assembling procedures are tuned to minimize deployment time and...Go to contribution page
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Christos Filippidis (Nat. Cent. for Sci. Res. Demokritos (GR))15/09/2015, 15:30KM3NeT is a future European deep-sea research infrastructure hosting a new generation neutrino telescope with a volume of several cubic kilometres that -located at the bottom of the Mediterranean Sea - will open a new window on the universe. International collaborative scientific experiments, like KM3NeT, are generating datasets which are increasing exponentially in both complexity and volume,...Go to contribution page
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Mr Christophe Tardy (POWERSEA)15/09/2015, 15:40PowerSea is a spin-off company based on research done by the french CNRS on the wet-mateable underwater connectors. The reliability and the cost of subsea connections are a key issue for deep sea projects. The company has already developed a wet-mate connector adapted to marine renewable energies, featuring a high power (24 kV-300A on 3 phases) and a cost adapted to the return of...Go to contribution page
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Christos Filippidis (Nat. Cent. for Sci. Res. Demokritos (GR))15/09/2015, 15:45International collaborative scientific experiments are generating datasets which are increasing exponentially in both complexity and volume, making their analysis, archival, and sharing one of the grand challenges of the 21st century. These experiments, in their majority, adopt computing models consisting of different Tiers (each Tier is made up of several computing centres and provides a...Go to contribution page
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Mohamed Rameez (Universite de Geneve (CH))15/09/2015, 16:30Placeholder. The actual abstract will be submitted later.Go to contribution page
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Dr Carla Distefano (LNS-INFN)15/09/2015, 16:30The gSeaGen code simulates neutrino-induced events detectable by an underwater neutrino detector. The code is an application based on GENIE (Generates Events for Neutrino Interaction Experiments), a set of libraries developed with the purpose to have a "canonical" Monte Carlo for neutrino interaction physics. The gSeaGen code is able to generate events induced by all neutrino flavours, taking...Go to contribution page
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Cristiano Bozza (University of Salerno)15/09/2015, 16:30KM3NeT is a new generation neutrino telescope in the Mediterranean Sea. For the operation of the telescope a relational database is designed and implemented for several purposes, like the centralised management of accounts, the storage of all documentation on components and on the status of the detector, of the slow control and calibration data. It also contains information useful during the...Go to contribution page
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Tim Ruhe (TU Dortmund)15/09/2015, 16:50The selection of event candidates by using machine algorithms has become an important analysis tool. Data mining, however, goes beyond the simple training and application of a learning algorithm. It also incorporates finding a good reprensation of the data in less dimensions without losing relevant information, as well as a thorough validation of the results throughout the entire analysis. A...Go to contribution page
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Maria Vittoria Garzelli15/09/2015, 16:50Prompt lepton fluxes are basic backgrounds in the search of high-energy neutrinos of astrophysical origin, performed by means of full-size neutrino telescopes located at Earth, under ice or under water. Predictions for these fluxes are provided on the basis of up-to-date theoretical results for charm hadroproduction in perturbative QCD, together with a comprehensive discussion of the various...Go to contribution page
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Damien DORNIC (CPPM)15/09/2015, 16:50ANTARES is currently the largest neutrino telescope operating in the Northern Hemisphere, aiming at the detection of high-energy neutrinos from astrophysical sources. Such observations would provide important clues about the processes at work in those sources, and possibly help solve the puzzle of very high-energy cosmic rays. By design, neutrino telescopes constantly monitor at least one...Go to contribution page
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Christos Filippidis (Nat. Cent. for Sci. Res. Demokritos (GR))15/09/2015, 17:10Aim of this work is the development of a multithreaded version of the SIRENE detector simulation software for high energy neutrinos. This approach allows utilization of multiple CPU cores and GPUs, leading to a potentially significant decrease in the required execution time compared to the sequential code. We are making use of MPI, OpenMP frameworks for the production of multithreaded code...Go to contribution page
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Joakim Sandroos (Universität Mainz, IceCube)15/09/2015, 17:10Next generation atmospheric low-energy neutrino detectors, will be able to measure neutrinos with energies of a few GeV. In this energy range the primary signal below the horizon is neutrino secondaries from cosmic ray interactions in the atmosphere. The measured event rate will depend on the neutrino mass hierarchy, allowing determination of the Neutrino mass hierarchy to a significance level...Go to contribution page
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Thomas Kintscher (DESY)15/09/2015, 17:10The IceCube Neutrino Observatory is a 1 km³ detector for Cherenkov light in the ice at the South Pole. Although the presence of a diffuse astrophysical neutrino flux has been confirmed, its origin has yet to be resolved. Given the current constraints on continuous point source searches, transient and variable objects emerge as promising, detectable source candidates. IceCube boosts the...Go to contribution page
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Aurore Mathieu15/09/2015, 17:30The ANTARES telescope is well suited to detect neutrinos produced in astrophysical transient sources as it can observe a full hemisphere of the sky with a duty cycle close to unity. Potential neutrino sources are gamma-ray bursts, core-collapse supernovae and flaring active galactic nuclei. To enhance the sensitivity of ANTARES to such sources, a detection method based on follow-up...Go to contribution page
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Dr Askhat Gazizov (GSSI/DESY)15/09/2015, 17:30We present an updated set of (anti)neutrino-nucleon charged and neutral current scattering cross-sections with an emphasis on intermediate energies between ~ 3 GeV and ~ 100 GeV. These cross-sections can be used for reconstruction and analysis of events in the future PINGU, ORCA and Hyper-Kamiokande experiments and for detector parameters optimization. Dynamic effects due to the finite...Go to contribution page
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Luigi Antonio Fusco (University of Bologna)15/09/2015, 17:30The data acquisition conditions in a marine environment are not stable and constant in time. Some biological and physical phenomena follow a seasonal evolution producing a periodical change of the rates registered in a neutrino telescope. Also variations in the sea current velocity affects the measured baseline value and the burst fraction on short time scales. Monte Carlo simulations of...Go to contribution page
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Kyle Jero (University of Wisconsin - Madison)15/09/2015, 17:46CORSIKA is a simulation program for extensive air showers initiated by high energy cosmic particles. These air showers create the majority of the muons and neutrinos that neutrino telescopes detect and are considered a background signature in searches for astrophysical neutrinos. This contribution will discuss changes to CORSIKA which allow for faster high energy background simulation. The...Go to contribution page
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Kotoyo Hoshina15/09/2015, 17:50Neutrinos have favorable properties for measuring the elemental composition deep inside the earth's interior. First, they propagate a long distance almost undisturbed through the earth due to their weak interactions with matter. Secondly, neutrino oscillations in matter are sensitive to the electron density of the medium traversed by them, rather than the nucleus density. Using our knowledge...Go to contribution page
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Jon Dumm (Stockholm University)15/09/2015, 17:50The origins of the flux of high-energy astrophysical neutrinos observed by the IceCube Neutrino Observatory continue to elude us. These neutrinos most likely originate in hadronic interactions taking place in or near the sources of cosmic-ray acceleration, causing associated gamma-ray production. We use the VERITAS Imaging Air Cherenkov Telescope to search for these gamma rays from the...Go to contribution page
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Kyle Jero (University of Wisconsin - Madison)15/09/2015, 18:02We introduce the SQuIDS framework, which was designed to solve quantum mechanical evolution in the density matrix formalism in an efficient way. A specialization of this package for neutrino propagation, called $\nu$-SQuIDS, is showcased. Finally, we show how this new propagation scheme is being integrated into the IceCube MC software to add flexibility for analyzers.Go to contribution page
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Bruny Baret (CNRS)15/09/2015, 18:10Cataclysmic cosmic events can be plausible sources of both gravitational waves (GW) and high energy neutrinos (HEN), alternative cosmic messengers carrying information from the innermost regions of the astrophysical engines. Possible sources include long and short gamma-ray bursts (GRBs) but also low-luminosity or choked GRBs, with no or low gamma-ray emissions. The ANTARES Neutrino Telescope...Go to contribution page
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Tim Ruhe (TU Dortmund)15/09/2015, 18:10IceCube is a neutrino telescope with an instrumented volume of one cubic kilometer. A total of 5160 Digital Optical Modules (DOMs) is deployed on 86 strings forming a three dimensional detector array. Although primarily designed for the detection of neutrinos from astrophysical sources, the detector can be used for spectral measurements of atmospheric neutrinos. These spectral measurements are...Go to contribution page
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Ms EVANGELIA DRAKOPOULOU (N.C.S.R. Demokritos)15/09/2015, 18:18KM3NeT will be a European deep-sea infrastructure of neutrino telescopes covering a volume of several cubic kilometers at the Mediterranean Sea aiming to search for high energy neutrinos from galactic and extragalactic sources. This analysis focuses on muon neutrinos and muons coming from charged-current interactions. In large water Cherenkov detectors the reconstructed muon is used to...Go to contribution page
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Douglas Cowen (Pennsylvania State University)15/09/2015, 18:30The Astrophysical Multimessenger Observatory Network (AMON) will link the world’s leading high-energy neutrino, cosmic-ray, gamma-ray and gravitational wave observatories by performing real-time coincidence searches for multimessenger sources from observatory subthreshold data streams. The resulting coincidences will be distributed to interested parties in the form of electronic alerts for...Go to contribution page
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Karel Melis (Nikhef)15/09/2015, 18:34KM3NeT is a future research infrastructure with a neutrino telescope in the abyss of the Mediterranean Sea. In KM3NeT, the open source JPP software package is primarily used in the data acquisition, offline triggering and calibration of the data send to shore. The available extensive set of JPP methods has been succesfully used for the development of fast, robust and detailed reconstruction...Go to contribution page
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Anatoli Fedynitch (KIT - Karlsruhe Institute of Technology (DE))16/09/2015, 09:00The detection of astrophysical neutrinos, certainly a break-through result, introduced new experimental challenges and fundamental questions about acceleration mechanisms of cosmic rays. On one hand IceCube succeeded in finding an unambiguous proof for the existence of a diffuse astrophysical neutrino flux, on the other hand the precise determination of its spectral index and normalization...Go to contribution page
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Juan M Nieves (IFIC (CSIC-UV))16/09/2015, 09:30New and more precise measurements of neutrino cross sections have renewed the interest in a better understanding of electroweak interactions on nucleons and nuclei. This effort is crucial to achieve the precision goals of the neutrino oscillation program, making new discoveries, like the CP violation in the leptonic sector, possible. We review the recent progress in the physics of neutrino...Go to contribution page
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Alfons Weber (STFC/RAL & Uni Oxford)16/09/2015, 10:00Some of the most precise measurements of neutrino oscillation parameters have been made using accelerator based muon neutrino beams. By studying how the flavour composition of a beam of muon neutrinos changes and they become electron and tau neutrinos, one can not only measure several mixing angles of the PMNS matrix, but also their mass differences squared. After a short introduction into the...Go to contribution page
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Christopher van Eldik (University of Erlangen-Nuremberg)16/09/2015, 11:00Since about a decade, ground-based gamma-ray telescopes are key instruments to investigate the high-energy universe at photon energies above ~100 GeV. Mainly devoted to searching for and characterizing cosmic particle acceleration and transport, the instruments HESS, MAGIC, VERITAS and HAWC have so far discovered more than 100 Galactic and extragalactic sources of very-high-energy (VHE) gamma...Go to contribution page
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Alessandro De Angelis (Universita degli Studi di Udine (IT))16/09/2015, 11:40Several projects planned or proposed can significantly expand our knowledge of the high-energy Universe. Construction of the Cherenkov telescope array CTA is going to start in October, and other detectors are planned which will use the reconstruction of extensive air showers. This talk describes the physics potential of this exploration, with particular attention to possible discoveries on...Go to contribution page
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Rob van der Meer (ASTRON)16/09/2015, 12:20ASTERICS (Astronomy ESFRI and Research Infrastructure Cluster) brings together astronomers and astroparticle physicists of 22 institutes in Europe to help Europe’s world-leading observatories work together to find common solutions to their Big Data challenges, their interoperability and scheduling, and their data access, searching for cross-cutting solutions with mutual and wide-ranging...Go to contribution page
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Juergen Brunner (CPPM)16/09/2015, 13:40Neutrino astronomy is driven by the quest for the origin of cosmic rays. Powerful acceleration engines are needed to produce cosmic rays at the upper end of the observed energy spectrum. Neutrinos would be created in subsequent interactions of these particles in conjunction with photons in a wide range of wave lengths. Gravitational waves might as well be produced by the same sources which...Go to contribution page
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Frank Linde (NIKHEF (NL))16/09/2015, 14:10
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Antonio Capone (Universita e INFN, Roma I (IT))16/09/2015, 14:30
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Dustin Hebecker (HU-Berlin / DESY)We report the development status of a single-photon sensor that employs wavelength-shifting and light-guiding techniques to maximize the collection area while minimizing the dark noise rate. The sensor is tailored towards application in ice-Cherenkov neutrino detectors using inert and cold, low-radioactivity and UV transparent ice as a detection medium, such as IceCube-Gen2 or MICA. The goal...Go to contribution page
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Mr Cormack Andy (ET Enterprises)Recent demands for photomultipliers as a result of large scale telescope projects has pushed the performance requirements and boundaries in their design and development. The need for improved timing characteristics, low afterpulse, enhanced QE and compact design are essential to meet the performance needs of the next generation telescopes. ET Enterprises has a long history in the design...Go to contribution page
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