Abstract
The KM3NeT Collaboration aims at building a research infrastructure in the depths of the Mediterranean Sea hosting a cubic kilometre neutrino telescope. The KM3NeT/ARCA detector is the ideal instrument to look for high-energy neutrino sources thanks to the latitude of the detector and to the optical characteristics of the sea water. The detector latitude allows for a wide coverage of the observable sky including the region of the Galactic centre and the optical sea water properties allow for the measure of the neutrino direction with excellent angular resolution also for cascade events. The technologically innovative components of the detector and the status of construction will be presented as well as the capability it offers to discover neutrinos.
Highlights
The KM3NeT Collaboration aims at building a research infrastructure in the depths of the Mediterranean Sea hosting a cubic kilometre neutrino telescope
The main aims of the KM3NeT Collaboration are the observation of cosmic high energy neutrinos and the study of their origins and the determination of the neutrino mass hierarchy
To reach these goals the Collaboration started the construction of a network of two telescopes in the depth of the Mediterranean Sea: ARCA, with an instrumented volume of about 1 km3 that will be installed near the Sicilian (Italy) coast, and ORCA, a smaller and more densely instrumented detector for the study of the neutrino mass hierarchy that will be installed near the Toulon coast (France)
Summary
The main aims of the KM3NeT Collaboration are the observation of cosmic high energy neutrinos and the study of their origins and the determination of the neutrino mass hierarchy. The detection principle of the under sea high-energy neutrino detectors is based on the measurement of the Cherenkov light induced in water by the secondary charged particles produced in neutrino interactions inside or in the vicinity of the detector. The good angular resolution, both for cascade and track events, and the large visibility of the Galactic Plane makes ARCA the ideal instrument to investigate Galactic sources and in general all sources located in the Southern sky This unique characteristics has pushed the collaboration to optimize the detector design for the detection of neutrinos from Galactic sources which have an expected energy from a few TeV to a few 10 TeV. A DOM mounted on a DU is shown in Fig. 1 left This innovative photon sensor, which is the result of an intense R&D activity, has several advantages with respect to the conventional optical modules with one 10 inch PMT.
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