This paper describes a method for the measurement of gain and linearity of photomultipliers (PMTs). Gain and linearity are two fundamental parameters to use properly a PMT in several physics experiments. In the developed system light is laser generated and adressed to the PMT through a set of optical fibers. The data acquisition system consists in a commercial 16 channel digitizer coupled to a custom front-end board. With the chosen digitizer the system is scalable to test up to 16 PMTs, with the aid of a light distribution system and a multi-channel version of the front-end board. Data analysis is performed by a custom acquisition software. A 1.5» Hamamatsu PMT is used to validate the system.
A laser-based system for a fast and accurate measurement of gain and linearity of photomultipliers / Longhitano, F.; Buscemi, M.; Barbato, F. C. T.; Bonanno, D. L.; Bongiovanni, D. G.; Caruso, R.; Guarino, F.; Presti, D. Lo. - In: JOURNAL OF INSTRUMENTATION. - ISSN 1748-0221. - 13:1(2018), pp. T01007-T01007. [10.1088/1748-0221/13/01/T01007]
A laser-based system for a fast and accurate measurement of gain and linearity of photomultipliers
Barbato, F. C. T.Investigation
;Guarino, F.Investigation
;
2018
Abstract
This paper describes a method for the measurement of gain and linearity of photomultipliers (PMTs). Gain and linearity are two fundamental parameters to use properly a PMT in several physics experiments. In the developed system light is laser generated and adressed to the PMT through a set of optical fibers. The data acquisition system consists in a commercial 16 channel digitizer coupled to a custom front-end board. With the chosen digitizer the system is scalable to test up to 16 PMTs, with the aid of a light distribution system and a multi-channel version of the front-end board. Data analysis is performed by a custom acquisition software. A 1.5» Hamamatsu PMT is used to validate the system.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
