Performance of a C4F8O Gas Radiator Ring Imaging Cherenkov Detector   Using Multi-anode Photomultiplier Tubes
  We report on test results of a novel ring imaging Cherenkov (RICH) detection system consisting of a 3 meter long gaseous C4F8O radiator, a focusing mirror, and a photon detector array based on Hamamatsu multi-anode photomultiplier tubes. This system was developed to identify charged particles in the momentum range from 3-70 GeV/c for the BTeV experiment. 
M. Artuso, C. Boulahouache, S. Blusk, J. Butt, O. Dorjkhaidav, N.   Menaa, R. Mountain, H. Muramatsu, R. Nandakumar, K. Rand...