Erlangen 2026 – scientific programme

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T: Fachverband Teilchenphysik

T 12: Silicon Detectors II

T 12.1: Talk

Monday, March 16, 2026, 16:15–16:30, KH 01.022

Testing infrastructure for the quality control of ITk Pixelmodules — •Ruben Förster, Jörn Grosse-Knetter, and Arnulf Quadt — II. Physikalisches Institut, Georg-August-Universität Göttingen

With the long shutdown of the Large Hadron Collider (LHC) and the subsequent upgrade to the High-Luminosity LHC (HL-LHC) starting soon, the ATLAS experiment will be undergoing extensive upgrades. A central element of this is the new Inner Tracker (ITk), an all-Silicon detector designed to cope with the increased particle flux, radiation levels, and data rates expected at the HL-LHC.

One of the subdetectors is the ITk pixel detector, composed of roughly 8 000 pixel modules that are now in the critical phase of production. As part of the German production cluster, the University of Göttingen is responsible for many of the later production and quality control testing steps for several hundred of these modules.

The testing infrastructure in Göttingen, including setups, procedures, and software for electrical and thermal testing, gluing, and metrology, has been improved and upgraded. The experience gained during production has led to more streamlined workflows and an overall increase in achievable throughput.

A central aspect of this is a newly constructed radiation-compliant electrical test stand, designed for routine operation in a production environment. Together with clear procedures, training of laboratory staff and simplified operator interfaces, this infrastructure places Göttingen in a strong position for the remaining ITk pixel module production.

Keywords: ITK Pixel; Hybrid Pixel Detector; Quality Control Testing