SMuK 2023 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 95: Pixel, Det/Sys LHCb, HGT
T 95.5: Vortrag
Mittwoch, 22. März 2023, 18:30–18:45, REC/C213
First data from the LHCb Beam Conditions Monitor in Run III of the LHC — Johannes Albrecht1, Elena Dall’Occo1, •Martin Bieker1, David Rolf2,1, Holger Stevens1, and Dirk Wiedner1 — 1TU Dortmund University, Dortmund, Germany — 2CERN, Geneva, Switzerland
The LHCb experiment is a single-arm forward spectrometer at the LHC that focuses on measurements in the b and c quark sector. Due to its unique geometry, featuring a sensitive tracking system located as close as 3 mm to the LHC beams, the detector is at risk of damage from adverse beam conditions. For this reason, the particle flux near the beam pipe is monitored by eight diamond sensors in a circular arrangement on either side of and close to the interaction point.
In preparation for the ongoing Run III of the LHC this so-called Beam Conditions Monitor (BCM) has been overhauled as part of a comprehensive upgrade of the LHCb detector. Besides the safety-related functions, measurements of the particle flux near the interaction point can serve as an estimate for the instantaneous luminosity.
The talk will present the first data acquired during the initial months of LHC operation in Run III with the upgraded BCM readout system. In order to evaluate performance metrics, such as the linearity of the sensor response, the BCM output is compared to data from other LHCb subdetectors.