Development of a RICH detector for ultrarelativistic heavy ion collisions

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Abstract

A single module of an intended RICH detector for ultrarelativistic heavy ion collisions (NA35 experiment at CERN) has been tested with 1.5–3 GeV/c positive hadrons. The Cherenkov photons from a liquid freon (C6F14) radiator have been focused by a spherical mirror into a multistep avalanche chamber equipped with an optical readout. The analysis of the events and the results of the reconstruction of the Cherenkov angle are presented. A good agreement between experiment and simulation was observed.

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Supported in part by contract C11-0250 YU(A) of the Commission of European Communities.

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