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Title: Characterization of the 80-mm diameter Hamamatsu PMTs for the KM3NeT project

The optical module designed for the KM3NeT project consists of 31 photomultipliers of 3-inch diameter housed into a 17-inch diameter glass sphere. A proposed photomultiplier was the R12199-02 Hamamatsu 80-mm diameter. 203 of such PMTs have been delivered from Hamamatsu and tested by the KM3NeT groups of NIKHEF-Amsterdam, ECAP-Erlangen and INFN-Catania. Tests have been performed to measure the main parameters, such as gain, transit time spread, dark pulses rate, fraction of spurious pulses, quantum efficiency and effective photocathode size. The main results matched with the requirements of the project. Methods and results are presented in this report.
Authors:
; ;  [1] ; ;  [2] ; ;  [3] ;  [4] ; ;
  1. INFN, sezione di Catania, Via S.Sofia 64, 95125, Catania (Italy)
  2. ECAP, Erwin-Rommel-Str. 1, 91052, Erlangen (Germany)
  3. NIKHEF, Science Park, Amsterdam (Netherlands)
  4. NIKHEF, Science Park, Amsterdam, The Netherlands and Leiden University, Leiden Institute of Physics, PO Box 9504, Leiden, 2300 RA (Netherlands)
Publication Date:
OSTI Identifier:
22390613
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1630; Journal Issue: 1; Conference: VLVvT 13: 6. International Workshop on Very Large Volumte Neutrino Telescopes, Stockholm (Sweden), 5-7 Aug 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; DESIGN; GAIN; GLASS; MULTIPARTICLE SPECTROMETERS; NEUTRINO DETECTION; NIKHEF; PARTICLE IDENTIFICATION; PHOTOCATHODES; PHOTOMULTIPLIERS; QUANTUM EFFICIENCY; SCINTILLATION COUNTERS; SPHERES