The new monolithic ASIC of the preshower detector for di-photon measurements in the FASER experiment at CERN

The ForwArd Search ExpeRiment (FASER) is an experiment searching for new light and weakly-interacting particles at CERN's Large Hadron Collider. FASER is composed of different sub-detectors, including silicon microstrip detectors, scintillator counters and an elec-tromagnetic calorimeter. In this paper, a new preshower detector for the FASER experiment is presented. The new detector, based on monolithic pixel ASICs, will provide excellent spatial and time resolutions and a large charge dynamic range. First results from a prototype chip produced by IHP in 130 nm SiGe BiCMOS technology are shown.

Automated summary

The FASER experiment at CERN's Large Hadron Collider is searching for new light and weakly-interacting particles. It consists of various sub-detectors, including silicon microstrip detectors, scintillator counters, and an electromagnetic calorimeter. This paper presents a new preshower detector for the FASER experiment, which is based on monolithic pixel ASICs and provides excellent spatial and time resolutions, as well as a large charge dynamic range. Preliminary results from a prototype chip produced by IHP in 130 nm SiGe BiCMOS technology are shown.