  This work aims at the performance of the ALICE detector for the measurement
of high-energy jets at mid-pseudo-rapidity in ultra-relativistic
nucleus--nucleus collisions at LHC and their potential for the characterization
of the partonic matter created in these collisions. In our approach, jets at
high energy with E_{T}>50 GeV are reconstructed with a cone jet finder, as
typically done for jet measurements in hadronic collisions. Within the ALICE
framework we study its capabilities of measuring high-energy jets and quantify
obtainable rates and the quality of reconstruction, both, in proton--proton and
in lead--lead collisions at LHC conditions. In particular, we address whether
modification of the jet fragmentation in the charged-particle sector can be
detected within the high particle-multiplicity environment of the central
lead--lead collisions. We comparatively treat these topics in view of an EMCAL
proposed to complete the central ALICE tracking detectors. The main activities
concerning the thesis are the following: a) Determination of the potential for
exclusive jet measurements in ALICE. b) Determination of jet rates that can be
acquired with the ALICE setup. c) Development of a parton-energy loss model. d)
Simulation and study of the energy-loss effect on jet properties.
