Silicon Photomultipliers (SiPMs) can be very promising devices in the field of photodetection thanks to their interesting features regarding the photoresponsivity, the efficiency, the temporal and spatial resolution and the relatively low cost. Unfortunately, up to now, the performances of these devices are very sensitive to damages caused by radiation. For this reason, the INFN groups members...
Many improvements in SiPM production technology have been achieved in the last few years. Using SiPM as a photodetector is one option for the next TOP detector upgrade of the Belle II experiment. The characterization of SiPMs from several producers is ongoing at the INFN/University Padova laboratory at different temperatures down to -40 degrees. The selected SiPMs are the last available...
The increasing requirements for sub-mm/mm photon sensor cells made of 10-50 um array of single photon avalanche diodes (SPAD) imply higher levels of integration. Standard CMOS processes provide a mature and reliable technology, which allows the co-integration of SPADs and electronics at low costs. A 50% photon detection efficiency has been obtained with timing resolution of about 80 ps FWHM ...
KM3NeT, with the largest number of photodetectors ever built, operates with 20,000 3" PMTs submerged underwater. Ongoing efforts aim to integrate more PMTs into the Digital Optical Module (DOM), totaling around 200,000 PMTs. 10,000 PMTs have undergone detailed characterization, informing the development of an enhanced 3" PMT model by Hamamatsu. The upgraded model exhibits improvements in dark...
We present the development of a single-photon detector based on a vacuum tube equipped with transmission photocathode, microchannel plate and a CMOS pixelated active read-out anode. The Timepix4 ASIC, developed by the Medipix4 Collaboration, is used as anode, and consists in an array of 512x448 pixels, 55μmx55μm each. The ASIC features 70e- equivalent noise charge, a maximum rate of...
The R&D project proposed is within the High-Intensity-Kaon-Experiment (HIKE), a high-intensity fixed-target kaon experiment at CERN SPS exploring the precision frontier of the SM in a complementary and synergic way LHC. The R&D goal is an application of photo-detector technology for ultra-fast timing single-photon detection with extended lifetime, and has synergies with the requirements of...
