Erlangen 2026 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 33: Silicon Detectors IV

T 33.3: Vortrag

Dienstag, 17. März 2026, 16:45–17:00, KH 01.022

The ATLAS ITk cell integration site in Bonn — •Alexandra Wald, Klaus Desch, Matthias Hamer, Florian Hinterkeuser, Jochen Dingfelder, Nico Klein, and Dominik Hauner — Physikalisches Institut, Universität Bonn, Deutschland

In conjunction with the high luminosity upgrade of the Large Hadron Collider at CERN, the current tracking system of the ATLAS experiment will be replaced by the Inner Tracker (ITk), an all-silicon detector consisting of 5 layers of pixel detectors and 4 layers of strip detectors. More than 8000 modules will be installed in the pixel layers, which together have an active area of approximately 13m2 and cover a pseudorapidity of up to 4. In order to build such a large detector in time, the integration of the ITk Pixel modules on their local support structures (longerons or incliend halfrings(IHR)), as well as the quality control of individual loaded local supports will be distributed over many institutes. One of the assembly lines will be setup at the University of Bonn, with technicians from other German locations also helping with cell integration. Due to the serial powering scheme of the ITk Pixel Detector, the quality control of a loaded local support is challenging in several aspects, as the simultaneous operation of multiple modules is necessary for any tests. A large number of different components must hence be integrated into the quality control setup, such as an optical readout system, an interlocks system, industrial power supplies and a scalable DCS. In this presentation, the loaded local support assembly line and the QC setup in Bonn are presented, with particular attention to recent operational developments and the latest tests.

Keywords: Pixel; ATLAS; ITk; Cell integration; CERN