Abstract
The results from a prototype for a fast RICH detector using phototubes are presented, testing three different types of tubes in the photocathode. In a 400 GeV/ cπ − beam, the number of photons detected was 11.8 per ring and the ring radius resolution obtained was 1.13%. The figure of merit, N 0, for the entire photocathode was measured to be 93/cm. Particle identification as a function of beam momentum was studied, as well as multiparticle event recognition.
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