The BTeV detector contains three particle ID devices: a RICH detector, an Electromagnetic Calorimeter and a Muon Detector. These are used to distinguish among the five types of charged tracks ( e , μ , π , K , p ), to reconstruct single photons, and to reconstruct mesons such as π 0 and η (′) which decay into photons. This article will outline the design of these devices, with particular attention to recent developments, and will present some benchmark numbers for the expected performance of these devices.
