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