6-8 April 2009
University of Oxford
Europe/London timezone

Performance of HPDs in the LHCb RICH Detectors

6 Apr 2009, 17:00
Dennis Sciama Lecture Theatre (University of Oxford)

Dennis Sciama Lecture Theatre

University of Oxford


Young Min Kim (University of Edinburgh)


The Ring Imaging Cherenkov (RICH) detectors of the LHCb experiment, at the Large Hadron Collider (LHC), have been built to provide charged particle identification. Hybrid Photon Detectors (HPDs) are used to detect the Cherenkov photons produced in the RICH radiators. Each HPD required extensive testing and categorisation before being mounted in the RICH. A subsample of 74 HPDs underwent Quantum Efficiency measurements. Results of these tests will be presented. Afterwards, the HPDs were mounted onto columns and fitted into the RICH detectors. I developed the software for monitoring the properties of HPDs mounted into the RICH. These results will be presented alongside investigations of HPDs which had vacuum degradation. Through the RICH group’s combined effort, the RICH detectors were ready for the first beams that circulated through the LHC.

Primary author

Young Min Kim (University of Edinburgh)

Presentation Materials