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 5 107, 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.
Titolo: | Procedures and results of the measurements on large area photomultipliers for the NEMO project |
Autori interni: | |
Data di pubblicazione: | 2010 |
Rivista: | |
Handle: | http://hdl.handle.net/20.500.11769/7529 |
Appare nelle tipologie: | 1.1 Articolo in rivista |