Testbeam results of a slat CPC prototype for the ALICE Dimuon Spectrometer

The ALICE Dimuon Spectrometer will measure the production of vector mesons in their muon decay mode in heavy ions collisions at the LHC in 2007. The Spectrometer includes a Tracking System, composed of 10 planes of Cathode Pad Chambers. Six larger planes (Stations 3–5) consists of several independent detectors, called slats. This poster presents the results, obtained in test beams at CERN in 2002, on a final slat of 1.20 m long.