Speaker
Emanuele Leonora
(INFN-section of Catania)
Description
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 pulses and after pulses and
quantum efficieny have been measured. These PMTs have been also scanned to
determine an effective photocathode size. Test results are presented in this talk.
Primary authors
Dorothea Samtleben
(Leiden University/Nikhef)
Emanuele Leonora
(INFN-section of Catania)
Erwin Visser
(Nikhef)
Jonas Reubelt
(ECAP / University of Erlangen)
Lew Classen
(ECAP / University of Erlangen)
Oleg Kalekin
(ECAP / University of Erlangen)
Sebastiano Aiello
(INFN-setion of Catania)
Valentino Giordano
(INFN-section of Catania)
