# Time Resolution Studies with Timepix3 Assemblies with Thin Silicon Pixel Sensors

## TL;DR

This study presents a pixel-by-pixel calibration method for Timepix3 detectors, achieving sub-nanosecond time resolution in particle beam tests with thin silicon sensors.

## Contribution

It introduces a systematic calibration approach for Timepix3's time response, improving timing accuracy for thin silicon pixel sensors.

## Key findings

- Achieved time resolutions down to 0.72 ns for minimum ionising particles.
- Demonstrated calibration effectiveness across sensors of 50-150 um thickness.
- Validated performance in particle beam environments.

## Abstract

Timepix3 is a multi-purpose readout ASIC for hybrid pixel detectors. It can measure time and energy simultaneously by employing time-of-arrival (ToA) and time-over-threshold (ToT) techniques. Both methods are systematically affected by timewalk. In this paper, a method for pixel-by-pixel calibration of the time response is presented. Assemblies of Timepix3 ASICs bump-bonded to thin planar silicon pixel sensors of different thicknesses between 50 um and 150 um are calibrated and characterised in particle beams. For minimum ionising particles, time resolutions down to 0.72 $\pm$ 0.04 ns are achieved.