identification plays a key role in the complete understanding of heavy ions
collisions in ALICE at the CERN/LHC. The High Momentum Particle
IDentification (HMPID) system will enhance the PID capability of ALICE beyond
the momentum range allowed by the energy loss measurements (ITS and TPC)
and by the TOF.
HMPID detector has been designed to extend the useful range for the
identification of p/K and K/p, on a
track-by-track basis, up to 3 GeV/c
and 5 GeV/c respectively.
will provide inclusive particle ratios and transverse-momentum spectra in the
region relevant for the study of phenomena connected with the pre-equilibrium
stage of the nucleus–nucleus collisions.
low yield of high-momentum particles in Pb–Pb collisions at the LHC energy
regime justifies the single-arm geometry of the HMPID covering about 5% of the
central barrel phase space.
Milestones reviews: Dec '02