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Photo-sensors for a Multi-PMT optical module in KM3NeT

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Title: Photo-sensors for a Multi-PMT optical module in KM3NeT
Authors: Kavatsyuk, O. o.kavatsyuk@rug.nl, Dorosti-Hasankiadeh, Q.1, Löhner, H.1
Source: Nuclear Instruments & Methods in Physics Research Section A. Jan2011 Supplement, Vol. 626-627, pS154-S156. 0p.
Subjects: Optoelectronic devices, Neutrinos, Telescopes, Photomultipliers, Cherenkov radiation, Photoelectrons, Photocathodes, Photoelectric cells
Abstract: Abstract: A deep-sea Neutrino Telescope of at least 1km3 size (KM3NeT) is being designed to search for high-energy (1–1000TeV) neutrinos originating from galactic and extragalactic sources. The detection principle exploits the measurement of Cherenkov light emitted by charged particles resulting from neutrino interactions in the matter surrounding the telescope. An optical module containing an array of 31 3-in. diameter photomultiplier tubes is a promising alternative to an optical module containing one 10-in. diameter phototube. The single photo-electron response of 3-in. diameter phototubes (Photonis XP53B20 and ETEL 9822B) has been investigated. Phototube characteristics such as the collection efficiency, transit-time spread and peak-to-valley ratio were determined at various positions across the photocathode surface in a remote-controlled 2D scanning system. Results of these investigations are reported and the perspectives to employ the investigated phototube types in the Multi-PMT optical module of the future KM3NeT detector are discussed. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
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Abstract:Abstract: A deep-sea Neutrino Telescope of at least 1km3 size (KM3NeT) is being designed to search for high-energy (1–1000TeV) neutrinos originating from galactic and extragalactic sources. The detection principle exploits the measurement of Cherenkov light emitted by charged particles resulting from neutrino interactions in the matter surrounding the telescope. An optical module containing an array of 31 3-in. diameter photomultiplier tubes is a promising alternative to an optical module containing one 10-in. diameter phototube. The single photo-electron response of 3-in. diameter phototubes (Photonis XP53B20 and ETEL 9822B) has been investigated. Phototube characteristics such as the collection efficiency, transit-time spread and peak-to-valley ratio were determined at various positions across the photocathode surface in a remote-controlled 2D scanning system. Results of these investigations are reported and the perspectives to employ the investigated phototube types in the Multi-PMT optical module of the future KM3NeT detector are discussed. [ABSTRACT FROM AUTHOR]
ISSN:01689002
DOI:10.1016/j.nima.2010.04.127