The recent performance of the Omega RICH detector in experiment WA89 at CERN
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abstract
The hyperon beam experiment WA89 at CERN uses the upgraded Omega RICH detector for identification of π, K and p/p̄ from Σ- -N reactions. Cherenkov photons from a 5 m long nitrogen radiator are detected in drift chambers with TMAE-loaded ethane. Recent results on the performance of the detector are presented.