The past ten years have seen the advent of silicon-based precise timing detectors for charged particle tracking. The underlying reason for this evolution is a design innovation: the Low-Gain Avalanche Diode (LGAD). In its simplicity, the LGAD design is an obvious step with momentous consequences: low gain leads to large signals maintaining sensors stability and low noise, allowing sensor segmentation. Albeit introduced for a different reason, to compensate for charge trapping in irradiated silicon sensors, LGAD found fertile ground in the design of silicon-based timing detectors. Spurred by this design innovation, solid-state-based timing detectors for charged particles are going through an intense phase of R&D, and hybrid and monolithic sensors, with or without internal gain, are being explored. This contribution offers a review of this booming field.
@article{arxiv.2204.06536,
title = {4D Tracking: Present Status and Perspective},
author = {N. Cartiglia and R. Arcidiacono and M. Costa and M. Ferrero and G. Gioachin and M. Mandurrino and L. Menzio and F. Siviero and V. Sola and M. Tornago},
journal= {arXiv preprint arXiv:2204.06536},
year = {2022}
}