The design of a detector system comprised of four silicon sensors bump-bonded to Timepix4 ASICs is described together with its data acquisition system, operational infrastructure, and dedicated software. The spatial and temporal performance of the system are assessed with a 180 GeV/c mixed hadron beam at the CERN SPS and reported in detail. Particle tracks are reconstructed using time-space measurements from the four detector planes. The spatial hit resolution is assessed to be (15.5±0.5)μm and (4.5±0.3)μm for 100 and 300 μm thick sensors, respectively. The timestamps from the detectors are also measured with fine precision, yielding time resolutions of (452±10) ps, (420±10) ps, (639±10) ps, (631±10) ps for the two 100 and two 300 μm thick sensors respectively. These measurements are combined to a track time resolution of (340±5) ps.
@article{arxiv.2210.01442,
title = {Reconstruction of charged tracks with Timepix4 ASICs},
author = {Kazu Akiba and Martin van Beuzekom and Vincent van Beveren and Wiktor Byczynski and Victor Coco and Paula Collins and Elena Dall'Occo and Raphael Dumps and Tim Evans and Robbert Geertsema and Evangelios Gkougkousis and Marius Halvorsen and Bas van der Heijden and Kevin Heijhoff and Edgar Lemos Cid and Tommaso Pajero and David Rolf and Heinrich Schindler},
journal= {arXiv preprint arXiv:2210.01442},
year = {2023}
}