Speaker
Description
The SiSMUV project (SiPM-based Space Monitor for UV-light) is devoted to the development of a compact, modular UV detector employing SiPM technology for space telescopes, designed to measure fluorescence and Cherenkov emissions generated by Ultra-High Energy Cosmic Rays (UHECRs).
SiSMUV incorporates state-of-the-art Hamamatsu SiPM matrices, low-power front-end electronics, and local intelligence into a monolithic photo-detection block. The system integrates RADIOROC ASICs, providing channel-by-channel bias tuning, sub-photoelectron triggering, dual-gain energy measurement, and excellent linearity up to 2000 p.e., combined with an Artix-7 FPGA and a CAEN bias supply.
We present the design and functional characterization of the prototype, including gain, PDE, crosstalk, afterpulses, and timing performance, using an integrating sphere with laser/LED sources and a calibrated PMT. The setup allows scanning of individual SiPMs under controlled conditions inside a dark box.
Beyond its technological development goals, the SiSMUV detector unit is envisioned as a building block for next-generation spaceborne Cherenkov cameras, such as the PoEMMA Balloon with Radio (PBR) mission, featuring a 2048-pixel focal plane, bi-focal optics for background reduction, and nanosecond-scale time resolution.
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