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Title: RICH particle identification at the present and future LHCb experiment
Authors: Kim, Graham Young-Min
Supervisor(s): Muheim, Franz
Matin, Victoria
Issue Date: 27-Jun-2011
Publisher: The University of Edinburgh
Abstract: LHCb is a high-precision experiment for the study of CP violation and rare decays in B physics. It has two Ring Imaging Cherenkov (RICH) counters for particle identification. The RICH system uses Hybrid Photon Detectors (HPD) for single photon detection. This thesis describes tests performed on individual HPDs for quantum efficiency and vacuum quality. It then presents work done monitoring HPD vacuum quality through regular ion feedback measurements after they were mounted into the RICH. Also discussed is HPD vacuum degradation and how replacement and repair of deteriorated HPDs was implemented using data from the vacuum monitoring. Preparations for an upgrade to LHCb have started. The upgrade will extend the discovery potential of the LHCb by increasing the rate of data collection. This thesis presents particle identification and avour tagging studies using upgrade simulations. Flavour tagging using kaons was then reoptimised for upgrade conditions and this work is described with discussions of the results.
Sponsor(s): Science and Technology Facilities Council (STFC)
Keywords: LHCb
Ring Imaging Cherenkov
Hybrid Photon Detectors
Appears in Collections:Physics thesis and dissertation collection

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