Heidelberg 2022 – scientific programme

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T: Fachverband Teilchenphysik

T 68: Detector Systems 2

T 68.3: Talk

Wednesday, March 23, 2022, 16:45–17:00, T-H27

Simulation of the Beam Conditions Monitor for the upgrade of the LHCb experiment — Johannes Albrecht, Elena Dall’Occo, and •David Rolf — Experimentelle Physik 5, TU Dortmund

The LHCb experiment is currently undergoing a major upgrade, preparing for the next period of data taking (Run 3) starting in 2022. The instantaneous luminosity in Run 3 will increase by a factor of five with respect to the previous runs. To ensure a safe operation of the experiment, simulation studies are performed for the Beam Conditions Monitor (BCM), responsible of protecting the LHCb detector against possible damage from the beam. Should an adverse beam scenario occur, the BCM will request a beam dump, thus preventing the beam from damaging the detector.

In this talk the impact of the changed beam conditions and configurations of the LHCb subdetectors on the BCM settings is evaluated, by studying the BCM response under both nominal and failing beam scenarios. Under nominal conditions the currents of the diamond sensors of the BCM detector are simulated and new settings for the beam dump logic are determined.

The effectiveness of the new proposed BCM settings are then investigated in critical beam scenarios. Simulations are performed under a beam scraping scenario to ensure the BCM will dump the beam before the beam drifts too far from its nominal position and starts to damage the sensitive detector parts.