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T: Fachverband Teilchenphysik

T 90: Silicon Detectors VII (ATLAS + CMS phase-2)

T 90.6: Vortrag

Freitag, 4. April 2025, 10:15–10:30, VG 0.111

In-Time Efficiency of ITk pixel modules using the ITkPixV1.1 front end — •Christopher Krause, Kevin Kröninger, Jens Weingarten, and Tobias Bisanz — TU Dortmund, Germany

The ATLAS Inner Tracker (ITk) will replace the Inner Detector of the ATLAS experiment for the High-Luminosity phase of the LHC. To ensure an excellent tracking performance of the silicon pixel and strip sensors of the ITk under the harsh HL-LHC environment, their performance has to be thoroughly tested and validated in testbeam facilities before installation. A crucial property of the pixel modules is their efficiency in regard to the phase of the 40 MHz clock of the LHC and the detector systems. As these modules can only record hits during the single 25 ns long readout time frame, evaluating their performance in dependence on the time is important to ensure a high tracking efficiency. To determine the in-time efficiency of an ITk pixel module, the clock of the DUT and the BDAQ system that is used to read out the data were synchronized. This talk presents the beam test results of In-Time efficiency measurements of an unirradiated 3D pixel module using the ITkPixV1.1 front end. The collected data was analysed with the track reconstruction framework Corryvreckan.

Keywords: Silicon Detectors; ITk Pixel; ITk Testbeam; Track Reconstruction