Göttingen 2025 – scientific programme

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T: Fachverband Teilchenphysik

T 61: Methods in Particle Physics III (Tracking)

T 61.3: Talk

Wednesday, April 2, 2025, 16:45–17:00, VG 4.101

Studies of alignment systems for the LHCb Upgrade II downstream tracker — •Todor Todorov, Ksenia Solovieva, and Marco Gersabeck — Albert-Ludwigs-Universität Freiburg, Freiburg im Breisgau, Germany

For the LHCb Upgrade II in Long Shutdown 4 the instantaneous luminosity is planned to increase by at least a factor of 5 with respect to current operation. The increase in detector occupancy and pileup will be beyond the capabilities of the current scintillating fibers (SciFi) sensors utilised in the downstream tracker of the LHCb detector. A new hybrid tracker will be installed, the Mighty Tracker, which will consist of six layers of silicon pixel sensors in the most occupied regions near the beam pipe and of an improved SciFi in the remaining areas. An active hardware alignment system will be beneficial for the physics performance of LHCb but it will have to adhere to strict space and material budget constraints. A study of alignment requirements and of early prototype systems capable of fulfilling those within the above-mentioned constraints is presented.

Keywords: Alignment; LHCb; Upgrade 2