The Cleo Rich Detector
  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. 
M. Artuso, R. Ayad, K. Bukin, A. Efimov, C. Boulahouache, E.   Dambasuren, S. Kopp, Ji Li, G. Majumder, N. Menaa, R. Mountai...