Author/Authors :
Elia، نويسنده , , D. and Colonna، نويسنده , , N. and Cozza، نويسنده , , D. Di Bari، نويسنده , , D.Di and Mauro، نويسنده , , A.Di and Morsch، نويسنده , , A. and Nappi، نويسنده , , E. and Paic، نويسنده , , G. and Piuz، نويسنده , , F. and Stucchi، نويسنده , , S. and Tomasicchio، نويسنده , , G.، نويسنده ,
Abstract :
A pattern recognition method developed for the High Momentum Particle IDentification (HMPID) detector in the ALICE experiment at CERN is presented. The algorithm is based on the Hough transform with a mapping of the pad coordinate space directly to the Cherenkov angle parameter space. Cherenkov angle reconstruction has been studied as a function of different particle densities in the photodetector using real data taken in the ALICE tests at the CERN SPS: a satisfactory resolution can be achieved even in events where the occupancy reaches more than 12%, which is the situation we may be confronted with in central Pb–Pb interactions at LHC.
