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School of Physics and Astronomy

On the development of a novel Silicon photon-detector for precision physics and commercial applications

18 April 2019

Time: 3:00 - 4:00pm
Speaker: Pietro Giampa (TRIUMF, Canada)

Silicon Photo-Multipliers (SiPMs) are devices capable of precisely detecting (counting and timing) single photons. With comparable gain to the classic Photo-Multiplier Tubes (PMTs), but with a much lower power requirement, SiPMs are widely used in precision-physics by experiments measuring scintillation and Cherenkov light. Moreover, SiPMs have also a significant commercial application side, ranging from medical imaging, to LiDARs, and much more. In this talk, we will review the current state-of-the-art of SiPMs, with emphasis on a new physics-based model that fully characterizes SiPMs in different configurations. Furthermore, we will present the ongoing R&D program designed to optimize this technology for future precision-physics detectors aimed at searches beyond the Standard Model of Particle Physics. This R&D effort is two-fold: timing optimization by incorporating a digital readout directly on the devices (3DSiPMs) and counting optimization by enhancing the VUV photo-detection-efficiency above 50% (100-200 nm).  slides: https://indico.ph.qmul.ac.uk/indico/conferenceDisplay.py?confId=462