Emanuele Leonora
(INFN-section of Catania)
06/08/2013, 11:00
Photodetection and Readout
200 PMTs of type R12199-02 have been delivered from Hamamatsu and tested by 3
groups in the frame of the KM3NeT collaboration: Nikhef Amsterdam, INFN Catania and
ECAP Erlangen. Tests have been performed to characterize all main PMT parameters to
verify whether they comply with the KM3NeT specifications. To this aim, gain, transit
time spread (TTS), dark count rate, fraction of delayed...
Dr
George Bourlis
(Hellenic Open University)
06/08/2013, 11:20
Photodetection and Readout
The KM3 Neutrino Telescope (KM3NeT) will be a deep-sea multidisciplinary observatory
in the Mediterranean Sea. The Physics Laboratory of the Hellenic Open University is
involved in the characterization of KM3NeT components. The present work describes
measurement techniques for the functional characteristics of the candidate KM3NeT
photomultipliers. These characteristics include dark...
Dr
Oleg Kalekin
(ECAP / University of Erlangen)
06/08/2013, 11:40
Photodetection and Readout
The companies ET Enterprises Ltd (ETEL, UK) and HZC
(China) have developed new
types of 3+ inch photomultiplier tubes (PMTs), which are
considered to be used in
multi-PMT optical modules in the KM3NeT neutrino telescope.
PMTs of types
D783KFLA, D793KFLA, D792KFLA (ETEL) and XP52 (HZC)
have been tested by the
KM3NeT collaboration. The measurement methods and
results are presented.
Dr
Valentina Giordano
(INFN - Catania)
06/08/2013, 11:55
Photodetection and Readout
A great number of large area photomultipliers are widely used in neutrino and
astroparticle detector to measure Cherenkov light in medium like water or ice. The
key element of these detectors are the so-called “optical module”, which consist in
photodetectors closed in a transparent pressure-resistant glass sphere to protect it
and ensure good light
transmission. The noise pulses...
Emanuele Leonora
(INFN-section of Catania)
06/08/2013, 12:10
Photodetection and Readout
The detection element of many deep-sea Cherenkov detectors is the so-called
"optical module", which consists of a pressure resistant glass sphere with
photomultipliers which are optically coupled to the glass with optical gel.
Earlier studies indicated that source of noise for the optical module is not only the
photomultiplier itself but light could come from the glass of the pressure...
