Erlangen 2026 – scientific programme

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T: Fachverband Teilchenphysik

T 43: Invited Topical Talks I

T 43.1: Invited Topical Talk

Wednesday, March 18, 2026, 13:45–14:15, AudiMax

Upgrade of the ATLAS tracker for HL-LHC: production status and challenges — •Roland Koppenhoefer — Albert-Ludwigs-Universität, Freiburg, Germany

In 2030, the High-Luminosity Large Hadron Collider (HL-LHC) at CERN is planned to start its operation. An integrated luminosity of up to 4000 fb⁻¹ is expected over a runtime of up to twelve years. This results in significantly increased particle densities and radiation levels in all HL-LHC experiments compared to the LHC phase. The ATLAS experiment replaces its inner detector by a completely new all-silicon tracking detector within the Phase-II Upgrade.

The new ATLAS Inner Tracker (ITk) consists of pixel modules in the innermost layers and strip modules in the outer layers. To assemble the required number of detector modules with highest quality and install them in larger detector structures ready for installation in the ATLAS detector in time, a production scheme has been developed with shared responsibilities between ITk institutes all over the world. After an overview of the scope of the ATLAS ITk Upgrade, this contribution will mainly focus on the production plan of the ITk strip detector. Besides discussing the current production status, a selection of technical challenges that needed to be overcome on the way is presented.

Keywords: Silicon detector; HL-LHC; Phase-2 Upgrade; ATLAS