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Elsevier, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2(614), p. 206-212

DOI: 10.1016/j.nima.2009.12.040

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Procedures and results of the measurements on large area photomultipliers for the NEMO project

Journal article published in 2010 by Sebastiano Aiello, Emanuele Leonora, A. Aloisio, Fabrizio Ameli, I. Amore, M. Anghinolfi, A. Anzalone, G. Barbarino, E. Barbarito, M. Battaglieri, M. Bazzotti, Roberto Bellotti, A. Bersani ORCID, N. Beverini, S. Biagi and other authors.
This paper is available in a repository.
This paper is available in a repository.

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Abstract

The selection of the photomultiplier plays a crucial role in the R&D activity related to a large-scale underwater neutrino telescope. This paper illustrates the main procedures and facilities used to characterize the performances of 72 large area photomultipliers, Hamamatsu model R7081 sel. The voltage to achieve a gain of 5 x 107, dark count rate and single photoelectron time and charge properties of the overall response were measured with a properly attenuated 410 nm pulsed laser. A dedicated study of the spurious pulses was also performed. The results prove that the photomultipliers comply with the general requirements imposed by the project. (C) 2009 Elsevier B.V. All rights reserved.