Very large SiPM arrays with aggregated output
JOURNAL OF INSTRUMENTATION(2022)
Abstract
In this work we will document the design and the performances of a SiPM-based photodetector with a surface area of 100 cm(2) conceived to operate as a replacement for PMTs. The signals from 94 SiPMs are summed up to produce an aggregated output that exhibits in liquid nitrogen a dark count rate (DCR) lower than 100 cps over the entire surface, a signal to noise ratio better than 13, and a timing resolution better than 5.5 ns. The module feeds about 360 mW at 5 V with a dynamic range in excess of 500 photo-electrons on a 100 Omega differential line. The unit can also operate at room temperature, at the cost of an increase of DCR to 10(8) cps.
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Key words
Front-end electronics for detector readout,Large detector systems for particle and astroparticle physics,Photon detectors for UV,visible and IR photons (solid-state),Photon detectors for UV,visible and IR photons (solid-state) (PIN diodes, APDs, Si-PMTs, G-APDs, CCDs, EBCCDs, EMCCDs, CMOS imagers, etc)
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