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 55nm 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 30ps for SiPM signals corresponding to minimum-ionizing particles (MIP) level (200p.e.) and better than 10ps for signals larger than 800p.e., while the PIST intrinsic timing resolution is 4.76±0.09ps. The time-over-threshold (ToT) response of the PIST ASIC has been attained, which can cover the SiPM response spanning from ∼560p.e. to ∼25,000p.e..