Barbato, Felicia Carla Tiziana (2016) Research and development of a pioneering system for single-photon detection: the VSiPMT. [Tesi di dottorato]


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Item Type: Tesi di dottorato
Resource language: English
Title: Research and development of a pioneering system for single-photon detection: the VSiPMT
Barbato, Felicia Carla
Date: 29 March 2016
Number of Pages: 103
Institution: Università degli Studi di Napoli Federico II
Department: Fisica
Scuola di dottorato: Ingegneria industriale
Dottorato: Tecnologie innovative per materiali, sensori ed imaging
Ciclo di dottorato: 28
Coordinatore del Corso di dottorato:
Barbarino, GiancarloUNSPECIFIED
Di Capua, FrancescoUNSPECIFIED
Date: 29 March 2016
Number of Pages: 103
Keywords: VSiPMT, SiPM, Hybrid Photodetectors
Settori scientifico-disciplinari del MIUR: Area 02 - Scienze fisiche > FIS/01 - Fisica sperimentale
Date Deposited: 08 Apr 2016 13:42
Last Modified: 02 Nov 2016 13:38

Collection description

The VSiPMT (Vacuum Silicon PhotoMultiplier Tube) is an innovative design for a revolutionary hybrid photodetector. The idea, born with the purpose to use a SiPM for large detection volumes, consists in replacing the classical dynode chain of a PMT with a special SiPM for electron detection. In this configuration, we match the large sensitive area of a photocathode with the performances of the SiPM technology, which therefore acts like an electron detector and so like a current amplifier. The excellent photon counting capability, fast response, low power consumption and great stability are among the most attractive features of the VSiPMT. In order to realize such a device first of all the feasibility of this detector has been studied both from theoretical and experimental point of view, by implementing a Geant4-based simulation and studying the response of a special non-windowed MPPC by Hamamatsu with an electron beam. Thanks to this result Hamamatsu realized two VSiPMT industrial prototypes with a photocathode of 3mm diameter. In this thesis are presented the results of a full characterization of the VSiPMT industrial prototypes with their pro and contra. The results obtained pushed for the realization of a larger and usable VSiPMT prototype. Here is also reported the preliminary study to optimize the focusing and the experimental study to realize a good semitransparent photocathode. A final report of the measurement on the assembled prototype is presented. At the conclusion of this work, recent developments and further improvements are presented.


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