Göttingen 2025 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 55: Data, AI, Computing, Electronics VI (DAQ and Trigger)

T 55.9: Vortrag

Mittwoch, 2. April 2025, 18:15–18:30, VG 2.102

Development of an automated pixel monitoring website — Arnulf Quadt, Marcello Bindi, and •Tim Schlömer — II. Physikalisches Institut, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen

The ATLAS Pixel detector registers charged particles by the charges generated in the detector by the incoming particles. A specific number of electrons, defined by the threshold, is required to register a hit. Additionally, the time-over-threshold (TOT) is measured. The charge threshold and TOT of the Pixel Detector are regularly tuned to maintain target values as they detune with integrated luminosity, as a result of radiation damage effects. Monitoring key parameters including but not limited to charge threshold, TOT, digital-to-analogue converters, the number of masked pixels, and the number of disabled columns is crucial. Tracking these parameters over time and across integrated luminosity is essential for maintaining optimal detector performance and contributes to studies on radiation damage.

The detector operation parameters are presented via a web framework which displays relevant plots and values. A pipeline for automatic updates after each detector tuning ensures the plots are up-to-date, while older versions remain accessible for reference. The framework also allows the user to visualise the evolution of critical parameters over time and compare specific tunings belonging to different period of the detector lifetime.