Performance studies of a SiPM-readout system with a pico-second timing chip

Abstract

A pico-second timing (PIST) front-end electronic chip has been developed using $55\mathrm{nm}$ CMOS technology for future electron-positron collider experiments (namely Higgs factories). Extensive tests have been performed to evaluate the timing performance of a dedicated SiPM-readout system equipped with a PIST chip. The results show that the system timing resolution can achieve $45\mathrm{ps}$ for SiPM signals at the minimum-ionizing particles (MIP) level ($200p.e.$) and better than $10\mathrm{ps}$ for signals larger than $1200p.e.$, while the PIST intrinsic timing resolution is $4.76\pm 0.60\mathrm{ps}$. The PIST dynamic range has been further extended using the time-over-threshold (ToT) technique, which can cover the SiPM response spanning from $\sim 900p.e.$ to $\sim 40000p.e.$.