Göttingen 2025 – scientific programme

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T: Fachverband Teilchenphysik

T 61: Methods in Particle Physics III (Tracking)

T 61.1: Talk

Wednesday, April 2, 2025, 16:15–16:30, VG 4.101

Performance of the SciFi tracker alignment in 2024 — •Nils Breer, Biljana Mitreska, and Johannes Albrecht — TU Dortmund University, Germany

Alignment and calibration form a crucial part of the LHCb trigger system and are responsible for ensuring the best possible physics performance. The positions of the SciFi tracker need to be monitored over time using the track-based alignment software in order to find potential biases and disentangle effects coming from other tracking systems.

In 2024 the global alignment is performed utilising all of LHCb's tracking detectors. The SciFi alignment constants are analysed on a set of runs for multiple configurations as well as the stability over time of the SciFi tracker in order to validate the performance on 2024 data.

In this talk, studies on the alignment of the outermost modules of the SciFi will be presented alongside results on the performance achieved by the global alignment.