Resumen:
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[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 ...[+]
[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 mass hierarchy. These telescopes will house hundreds of thousands of
photomultiplier tubes that will have to be operated in a stable and reliable fashion. In this context,
the stability of the dark counts has been investigated for photomultiplier tubes with negative high
voltage on the photocathode and held in insulating support structures made of 3D printed nylon
material. Small gaps between the rigid support structure and the photomultiplier tubes in the
presence of electric fields can lead to discharges that produce dark count rates that are highly
variable. A solution was found by applying the same insulating varnish as used for the high voltage
bases directly to the outside of the photomultiplier tubes. This transparent conformal coating
provides a convenient and inexpensive method of insulation.
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Código del Proyecto:
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info:eu-repo/grantAgreement/MINECO//FPA2015-65150-C3-1-P/ES/PARTICIPACION DEL IFIC EN ANTARES, KM3NET-ARCA%2FORCA Y PDG/
info:eu-repo/grantAgreement/ANR//ANR-11-IDEX-0005/FR/Université Sorbonne Paris Cité/USPC/
info:eu-repo/grantAgreement/ANR//ANR-10-LABX-0023/FR/Earth - Planets - Universe: observation, modeling, transfer/UnivEarthS/
info:eu-repo/grantAgreement/MINECO//FPA2015-65150-C3-2-P/ES/PARTICIPACION DE LA UPV EN ANTARES Y KM3NET-ARCA%2FORCA/
info:eu-repo/grantAgreement/MINECO//FPA2015-65150-C3-3-P/ES/PARTICIPACION DE LA UGR EN ANTARES, KM3NET-ARCA%2FORCA Y PDG/
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Agradecimientos:
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The authors acknowledge the financial support of the funding agencies: Centre National de la Recherche Scientifique (CNRS), Commission Europeenne (FEDER fund and Marie Curie Program), Institut Universitaire de France (IUF), ...[+]
The authors acknowledge the financial support of the funding agencies: Centre National de la Recherche Scientifique (CNRS), Commission Europeenne (FEDER fund and Marie Curie Program), Institut Universitaire de France (IUF), IdEx program and UnivEarthS Labex program at Sorbonne Paris Cite (ANR-10-LABX-0023 and ANR-11-IDEX-0005-02), France; The General Secretariat of Research and Technology (GSRT), Greece; Istituto Nazionale di Fisica Nucleare (INFN), Ministero dell'Istruzione, dell'Universita e della Ricerca (MIUR), Italy; Agence de l'Oriental and CNRST, Morocco; Stichting voor Fundamenteel Onderzoek der Materie (FOM), Nederlandse organisatie voorWetenschappelijk Onderzoek (NWO), the Netherlands; National Authority for Scientific Research (ANCS), Romania; Plan Estatal de Investigacion (refs. FPA2015-65150-C3-1-P, -2-P and -3-P, (MINECO/FEDER)), Severo Ochoa Centre of Excellence and MultiDark Consolider (MINECO), and Prometeo and Grisolia programs (Generalitat Valenciana), Spain.
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