Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

T: Fachverband Teilchenphysik

T 55: Silicon Detectors VI

T 55.8: Vortrag

Mittwoch, 18. März 2026, 18:00–18:15, KH 01.022

Cluster Size Simulations in Allpix Squared for the LHCb Mighty Pixel Tracker — •Ruben Kolb, Sebastian Bachmann, Lucas Dittmann, David Kuhn, Ulrich Uwer, and Celina Welschoff — Physikalisches Institut Universität Heidelberg

During LHC's Run 5, the instantaneous luminosity of the LHCb experiment is expected to increase by at least a factor of five, imposing significantly more stringent requirements on the tracking detectors in terms of occupancy and radiation tolerance. To meet these challenges, the Upgrade II program foresees the replacement of the current scintillating fiber (SciFi) tracker with the so-called Mighty Tracker. This new tracking system combines scintillating fiber detectors in the outer regions with monolithic silicon pixel sensors (Mighty Pixel) in the innermost region.

One of the critical specifications to design the pixel detector is the expected hit rate. Here, the cluster size has a substantial impact, as the particles traverse the detector under an angle. This has implications on the expected data rate and the overall detector performance. Besides the incident angle, the cluster size depends on pixel geometry, depletion depth, sensor thickness and detection threshold. A data-validated simulation in Allpix Squared utilizing the angle distribution expected in the pixel region of the Mighty Tracker is presented in this talk. The results aid in the decision for critical sensor design choices and detector layout.

Keywords: HV-MAPS; LHCb; Mighty Tracker; Allpix; Detector Simulation