The Cleo Rich Detector

Raymond Mountain, Department of Physics, Syracuse University, Syracuse, NY
M. Artuso, Department of Physics, Syracuse University, Syracuse, NY
R. Ayad, Department of Physics, Syracuse University, Syracuse, NY
K. Bukin, Department of Physics, Syracuse University, Syracuse, NY
First authors listed from Syracuse University, 20 additional authors not listed

75 pages, 57 figures, (updated July 26, 2005 to reflect reviewers comments), to be published in NIM A More information at http://arxiv.org/abs/physics/0506132

Description/Abstract

We describe the design, construction and performance of a Ring Imaging Cherenkov Detector (RICH) constructed to identify charged particles in the CLEO experiment. Cherenkov radiation occurs in LiF crystals, both planar and ones with a novel ``sawtooth''-shaped exit surface. Photons in the wavelength interval 135--165 nm are detected using multi-wire chambers filled with a mixture of methane gas and triethylamine vapor. Excellent pion/kaon separation is demonstrated.