Expected Tracking Performance of the ATLAS Inner Tracker at the High-Luminosity LHC
Abstract
The high-luminosity phase of LHC operations (HL-LHC), will feature a large increase in simultaneous proton-proton interactions per bunch crossing up to 200, compared with a typical leveling target of 64 in Run 3. Such an increase will create a very challenging environment in which to perform charged particle trajectory reconstruction, a task crucial for the success of the ATLAS physics program, and will exceed the capabilities of the current ATLAS Inner Detector (ID). A new all-silicon Inner Tracker (ITk) will replace the current ID in time for the start of the HL-LHC. To ensure successful use of the ITk capabilities in Run 4 and beyond, the ATLAS tracking software has been successfully adapted to achieve state-of-the-art track reconstruction in challenging high-luminosity conditions with the ITk detector. This paper presents the expected tracking performance of the ATLAS ITk based on the latest available developments since the ITk technical design reports.
Cite
@article{arxiv.2412.15090,
title = {Expected Tracking Performance of the ATLAS Inner Tracker at the High-Luminosity LHC},
author = {ATLAS Collaboration},
journal= {arXiv preprint arXiv:2412.15090},
year = {2025}
}
Comments
52 pages in total, author list starting page 35, 28 figures, 6 tables, published in JINST. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/IDTR-2023-01/