Dr. Gianfranca De Rosa Profile

Dr. Gianfranca De Rosa

at Univ degli Studi di Napoli Federico II

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Proceedings Article | 9 September 2019 Presentation + Paper

VSiPMT: a new solution in photon detection

F. C. T. Barbato, G. Barbarino, G. De Rosa, R. de Asmundis, L. Lavitola, C. M. Mollo, M. Mormile, D. Vivolo, A. Fukasawa

Proceedings Volume 11114, 1111404 (2019) https://doi.org/10.1117/12.2528536

KEYWORDS: Photodetectors, Quantum efficiency, Photonics, Single photon, Silicon photomultipliers, Sensors, Photon counting

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Photon detection is a key factor to study many physical processes in several areas of fundamental physics research as well as industrial application (i.e. medical equipment, environmental measurement equipment, quantum computing and oil well logging). Focusing the attention on photodetectors for particle astrophysics, we understand that we are very close to new discoveries and new results. In order to push the progress in the study of very high-energy or extremely rare phenomena (e.g. dark matter, proton decay, neutrinos from astrophysical sources) the current and future experiments require additional improvements in linearity, gain, quantum efficiency and single photon counting capability. To meet the requirements of these classes of experiments, we propose a new design for a modern hybrid photodetector: the VSiPMT (Vacuum Silicon PhotoMultiplier Tube). The idea is to replace the classical dynode chain of a PMT with a SiPM, which therefore acts as a single stage Geiger electron detector and amplifier, without statistical fluctuations. The aim is to match the large sensitive area of a photocathode with the performances of the SiPM technology. The previous VSiPMT prototypes already showed many attractive features such as low power consumption, very large dynamic range, excellent photon counting capability and low voltage driven gain. We now present the results of the full characterization of the latest and largest version achieved up to now, a 2-inches VSiPMT manufactured by Hamamatsu.

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