First demonstration of 50 ps four-dimensional vertex reconstruction with the Timepix4 beam telescope
Abstract
The first demonstration of 4D vertex reconstruction at the 50 ps scale using a silicon pixel detector is reported. Hadronic interactions are produced by directing a 180 GeV/c mixed-hadron beam onto a fixed target upstream of the Timepix4 beam telescope at the CERN SPS. The resulting particles are reconstructed using 4D track and vertex fits that include time directly alongside the spatial parameters. The vertex time resolution follows the expected statistical scaling with the number of timing measurements, reaching 54±5 ps for vertices reconstructed from 16 timing-plane clusters. An irreducible component of 29.2±0.6 ps remains in the fitted resolution model, including sizeable contributions from the clock distribution and the time reference system rather than from the combination of the timing measurements. The observed scaling down to 54 ps without an unforeseen resolution floor above represents a significant experimental step towards precision-timing in future high-pile-up detectors.
Related
- Development and demonstration of the Korea ALICE Telescope using electron beams at KEK PF-AR
- Experimental Demonstration of 7-Dimensional N-Vector Model with Dimensional Inflation and Annealing
- Vertex reconstruction for a search for neutron-antineutron conversions with HIBEAM
- Higher-dimensional full vertex algebras and systems of conformally covariant correlation functions
- Deep Learning Framework for Enhanced Neutrino Reconstruction of Single-line Events in the ANTARES Telescope
BibTeX
@misc{bacher2026first,
title = {{First demonstration of $50\,\mathrmps$ four-dimensional vertex reconstruction with the Timepix4 beam telescope}},
author = {David Bacher and Kazu Akiba and Martin van Beuzekom and Victor Coco and Raphael Dumps and Tim Evans and Kevin Heijhoff and Malcolm John and Edgar Lemos Cid and Loris Martinazzoli and Tommaso Pajero and Yutaro Takahashi and Espen de Wit},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.12084},
eprint = {2610.12084},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.12084},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - First demonstration of 50 ps four-dimensional vertex reconstruction with the Timepix4 beam telescope
AU - David Bacher
AU - Kazu Akiba
AU - Martin van Beuzekom
AU - Victor Coco
AU - Raphael Dumps
AU - Tim Evans
AU - Kevin Heijhoff
AU - Malcolm John
AU - Edgar Lemos Cid
AU - Loris Martinazzoli
AU - Tommaso Pajero
AU - Yutaro Takahashi
AU - Espen de Wit
PY - 2026
DA - 2026/10/08
PB - arXiv
DO - 10.48550/arxiv.2610.12084
UR - https://arxiv.org/abs/2610.12084
AB - The first demonstration of 4D vertex reconstruction at the 50 ps scale using a silicon pixel detector is reported. Hadronic interactions are produced by directing a 180 GeV/c mixed-hadron beam onto a fixed target upstream of the Timepix4 beam telescope at the CERN SPS. The resulting particles are reconstructed using 4D track and vertex fits that include time directly alongside the spatial parameters. The vertex time resolution follows the expected statistical scaling with the number of timing measurements, reaching 54±5 ps for vertices reconstructed from 16 timing-plane clusters. An irreducible component of 29.2±0.6 ps remains in the fitted resolution model, including sizeable contributions from the clock distribution and the time reference system rather than from the combination of the timing measurements. The observed scaling down to 54 ps without an unforeseen resolution floor above represents a significant experimental step towards precision-timing in future high-pile-up detectors.
ER -