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Author
KM3NeT Collaboration (Adrian-Martinez, S. et al)
;
Barrios-Marti, J.
;
Calvo, D.
;
Hernandez-Rey, J.J.
;
Illuminati, G.
;
Lotze, M.
;
Olcina, I.
;
Real, D.
;
Sanchez Garcia, A.
;
Tönnis, C.
;
Zornoza, J.D.
;
Zuñiga, J.
Title
A method to stabilise the performance of negatively fed KM3NeT photomultipliers
Type
Journal Article
Year
2016
Publication
Journal of Instrumentation
Abbreviated Journal
J. Instrum.
Volume
11
Issue
Pages
P12014 - 12pp
Keywords
Instrument optimisation
;
Large detector systems for particle and astroparticle physics
;
Neutrino detectors
;
Photon detectors for UV, visible and IR photons (gas) (gas-photocathodes, solid-photocathodes)
Abstract
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.
Address
[Albert, A.; Belias, A.; Biagioni, A.; Capone, A.; Coleiro, A.; Cosquer, A.; Creusot, A.; D'Amico, A.; D'Onofrio, A.; Enzenhofer, A.; Grmek, A.; Heijboer, A.; Kappes, A.; Kouchner, A.; Leisos, A.; Miraglia, A.] Accademia Navale Livorno, I-57100 Livorno, Italy, Email: spokesperson@km3net.de
Corporate Author
Thesis
Publisher
Iop Publishing Ltd
Place of Publication
Editor
Language
English
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
1748-0221
ISBN
Medium
Area
Expedition
Conference
Notes
WOS:000395732500014
Approved
no
Is ISI
yes
International Collaboration
yes
Call Number
IFIC @ pastor @
Serial
3041
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