The CSI-based RICH detector array for the identification of high momentum particles in ALICE

Abstract After ten years of R&D activities, an array of seven proximity focusing RICH modules is being built to identify π - K in the range 1 p c and K-p in the range 1.5 p 2 , represents the largest scale application of MWPCs with high Quantum Efficiency (QE) CsI segmented photo-cathodes for the Cherenkov photon conversion. An overview of the RICH layout, the technique of photocathode production, the front-end (FE) and readout (R/O) electronics and finally the detector control system (DCS), are presented.