Speakers
Description
The LHCb experiment is dedicated to precision measurements of CP violation and rare decays of beauty and charm hadrons. A key element is the Ring Imaging Cherenkov (RICH) system, providing robust charged-hadron identification over a wide momentum range.
During the second Long Shutdown of the LHC, the LHCb detector underwent a major upgrade to allow operation at a five-fold increased instantaneous luminosity and to enable a fully software-based trigger operating at the LHC bunch-crossing rate of 40 MHz.
To maintain excellent particle identification performance between approximately 3 and 100 GeV/c, the RICH detectors were completely refurbished. The upgrade includes the replacement of the Hybrid Photon Detectors with new multi-anode photomultiplier tubes, the development of custom readout electronics and a re-optimization of the optical layout to preserve performance while reducing the material budget.
This contribution presents the design and implementation of the upgraded RICH detectors. The calibration procedures are described, together with the figures of merit used to assess detector performance. The particle identification efficiency and stability achieved under such high-occupancy conditions are shown, demonstrating that the upgraded RICH system fully meets the requirements of the LHCb Upgrade I physics program.
| I read the instructions above | Yes |
|---|