Speaker
Description
Beam test plays an essential role in validating the performance of silicon strip detectors for the ATLAS Inner Tracker (ITk) upgrade for the High-Luminosity LHC. This contribution presents recent beam test results for two ITk strip detector modules, highlighting both validation of analysis frameworks and insights into irradiation effects. As a cross-check of existing results and an exercise in using the Corryvreckan analysis framework, the performance of module SS_20USBMS0000406 was studied using data from the October 2024 test beam campaign. Building on this experience, a more comprehensive analysis was performed for module SS_20USBMS0000381, comparing its performance before (October 2024) and after (July 2025) irradiation. A noticeably narrower operating window is observed in the irradiated module, which is consistent with expectations from displacement damage in the silicon substrate.
