Test beam results from the CLEO III LiF-TEA RICH

M. Artuso, F. Azfar, A. Efimov, S. Kopp, R. Mountain, S. Schuh, T. Skwarnicki, S. Stone, G. Viehhauser, S. Anderson, A. Smith, Y. Kubota, E. Lipeles, T. Coan, J. Staeck, V. Fadeyev, I. Volobouev, J. Ye

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


The CLEO collaboration is preparing a major upgrade of its present detector including a RICH detector for particle identification. This subdetector system follows the 'proximity focussing' design and uses Lithium Fluoride (LiF) crystal radiators and MWPCs filled with a CH4/TEA gas mixture. Part of the radiator crystals will have the new 'sawtooth' geometry. We have tested the first two of the 30 detector modules together with the first radiator crystals in a muon halo beam at Fermilab. For the measurement of the Cherenkov angle we obtain a single photon measurement error of 13.5 mrad for the conventional planar radiator. With 14 detected photons we find a resolution per track of 4.5 mrad. In the first measurement ever of a 'sawtooth' radiator we achieve a resolution of 11.8 mrad for single photons and 4.8 mrad per track for 12.3 detected photons with a reduced geometric acceptance. These results fulfill CLEO III requirements.

Original languageEnglish (US)
Pages (from-to)577-583
Number of pages7
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number2-3
StatePublished - Dec 21 1998

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


Dive into the research topics of 'Test beam results from the CLEO III LiF-TEA RICH'. Together they form a unique fingerprint.

Cite this