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Circuit model of an SiPM micro-pixel is shown where Vbr is the breakdown voltage, Rs (IkΩ) is the depletion region resistance, Rq (150kΩ) is the quenching resistance, Cj (90 fF) is the junction capacitance, N (3584 per SiPM) is the number of connected micro-pixels, Cbig (100nF) and Rin (100Ω) model AC coupled output electronics, and Vbias (Vbr + 3.9V) and Rbig (2kΩ) model DC coupled bias circuitry.
