Back to Search
Start Over
A method to stabilise the performance of negatively fed KM3NeT photomultipliers
- Source :
- Journal of Instrumentation, 12, 11, Journal of Instrumentation, Journal of Instrumentation, IOP Publishing, 2016, 11, pp.12014. ⟨10.1088/1748-0221/11/12/P12014⟩, UPCommons. Portal del coneixement obert de la UPC, Universitat Politècnica de Catalunya (UPC), Journal of Instrumentation, 2016, 11, pp.12014. ⟨10.1088/1748-0221/11/12/P12014⟩, RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia, instname, Journal of Instrumentation, 11:12014. IOP PUBLISHING LTD
- Publication Year :
- 2016
-
Abstract
- [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.<br />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.
- Subjects :
- PROTOTYPE
Physics::Instrumentation and Detectors
photomultiplier
coating
KM3NeT
neutrino telescope
Instrument optimization
Large detector systems for particle and astroparticle physics
Neutrino detectors
Photon detectors for UV, visible and IR photons (gas) (gas-photocathodes, solid-photocathodes)
Instrumentation
Mathematical Physics
01 natural sciences
Neutrino detector
010303 astronomy & astrophysics
Photon detectors for UV
Physics
OPT - Optics
TS - Technical Sciences
[SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph]
Instrument optimisation
Astrophysics::Instrumentation and Methods for Astrophysics
High voltage
Optoelectronics
Nano Technology
Neutrino
Photomultiplier
visible and IR photons (gas) (gas-photocathodes
Context (language use)
Photon detectors for UV, visible and IR photons (gas) (gas-photocathodes, solid-photocathode
Partícules (Física nuclear)
Photocathode
NO
Optics
0103 physical sciences
Neutrins
14. Life underwater
Electronics
Neutrinos
Detectors òptics
Optical detectors
Física [Àrees temàtiques de la UPC]
010308 nuclear & particles physics
business.industry
Neutrino astrophysics
[SDU.ASTR.IM]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM]
FISICA APLICADA
Large detector systems for particle and astroparticle physic
Visible and IR photons (gas) (gas-photocathodes, solid-photocathodes)
solid-photocathodes)
business
Subjects
Details
- Language :
- English
- ISSN :
- 17480221
- Database :
- OpenAIRE
- Journal :
- Journal of Instrumentation, 12, 11, Journal of Instrumentation, Journal of Instrumentation, IOP Publishing, 2016, 11, pp.12014. ⟨10.1088/1748-0221/11/12/P12014⟩, UPCommons. Portal del coneixement obert de la UPC, Universitat Politècnica de Catalunya (UPC), Journal of Instrumentation, 2016, 11, pp.12014. ⟨10.1088/1748-0221/11/12/P12014⟩, RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia, instname, Journal of Instrumentation, 11:12014. IOP PUBLISHING LTD
- Accession number :
- edsair.doi.dedup.....46fd1331f19d031189ee0eaa0f9c4a15