Reconstruction of charged tracks with Timepix4 ASICs

Abstract

The spatial and temporal performance of a four-plane system composed of silicon sensors bump-bonded to Timepix4 ASICs is 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, two 100 μm planes perpendicular to the beam and two 300 μm sensors under an angle of 9°. The spatial hit resolution is assessed to be (15.5 ± 0.5) μm and (4.5 ± 0.3) μm for 100 μm 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 μm and two 300 μm thick sensors respectively. These measurements are combined to a track time resolution of (340 ± 5) ps. The design of the detector system is described together with its data acquisition system, operational infrastructure, and dedicated software.

Chasing time

“…This paper titled "Reconstruction of charged tracks with Timepix4 ASICs" is published in JINST [91]. Future experiments in high energy physics will require timing measurements of the order of 10 ps in addition to the state-of-the-art spatial measurements.…”

“…De tijdsresolutie word voor alle vlakken beter voor hogere bias voltages. Figuren zijn aangepast van [91].…”