Karlsruhe 2024 – scientific programme

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T: Fachverband Teilchenphysik

T 27: Invited Topical Talks 2

T 27.1: Invited Topical Talk

Tuesday, March 5, 2024, 14:00–14:30, Geb. 30.22: Gaede-HS

Start up of Run 3 and performance of the upgraded LHCb experiment — •Elena Dall'Occo — TU Dortmund, Dortmund, Germany

The LHCb experiment underwent a major upgrade during the last long shutdown in order to operate at fivefold increase in instantaneous luminosity compared to the previous runs. Among the major changes, the tracking system has been fully replaced and the readout of all subdetectors is now at 40 MHz with a fully software based trigger.

This talk will focus on how to transition from a newly installed detector to a fully functioning and performant system in a process known as commissioning, spanning from the hardware side to reconstruction, trigger, alignment and calibration. The preliminary performance of the detector will be presented, including subsystem specific and global figures such as tracking reconstruction and particle identification efficiencies. The aim of this year is to reach the design operating conditions, and plans to achieve it as well as prospects for this exciting data taking period will be described.

Keywords: LHCb; upgrade; performance