Abstract
Photon detection is a key factor to study many physical processes in several areas of fundamental physics research. Focusing the attention on photodetectors for particle astrophysics, the future experiments aimed at the study of very high-energy or extremely rare phenomena (e.g. dark matter, proton decay, neutrinos from astrophysical sources) will require additional improvements in linearity, gain, quantum efficiency and single photon counting capability. To meet the requirements of these class 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 an electron detector and amplifier. The aim is to match the large sensitive area of a photocathode with the performances of the SiPM technology.
Highlights
Photodetectors are widely used in many areas of fundamental physics research
Focusing the attention on photodetectors for particle astrophysics, the future experiments aimed at the study of very high-energy or extremely rare phenomena will require additional improvements in linearity, gain, quantum efficiency and single photon counting capability
To meet the requirements of these class of experiments, we propose a new design for a modern hybrid photodetector: the VSiPMT (Vacuum Silicon PhotoMultiplier Tube)
Summary
Focusing on astroparticle physics experiments, up to the present the photon detection capability of photomultiplier tubes (PMTs) seems to be unrivalled. The realization of a new photon detector with photoelectron multiplication based on SiPMs, having a photocathode of at least 1 inch, will have a tremendous impact on astroparticle physics experiment.
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