Operational Experience with the ALICE Pixel detector

The Silicon Pixel Detector (SPD) constitutes the two innermost layers of the Inner Tracking System of the ALICE experiment and it is the closest detector to the interaction point. As a vertex detector, it has the unique feature of generating a trigger signal that contributes to the L0 trigger of the ALICE experiment. The SPD started collecting data since the very first pp collisions at LHC in 2009 and since then it has taken part in all pp, Pb-Pb and p-Pb data taking campaigns. This contribution will present the main features of the SPD, the detector performance and the operational experience, including calibration and optimization activities from Run 1 to Run 2

The heavy-ion programme of the ALICE experiment at LHC

The ALICE experiment at LHC is mainly dedicated to heavy-ion physics. An overview of its performances, some predictions related to its first measurements and QGP observable measurements will be given.The ALICE experiment at LHC is mainly dedicated to heavy-ion physics. An overview of its performances, some predictions related to its first measurements and QGP observable measurements will be given

φ(1020)-meson identification with the HMPID detector in the ALICE experiment

The ALICE experiment at CERN is devoted to study hadronic matter at extreme conditions of temperature, energy density and its phase transition to QGP. The φ(1020)-meson is a good probe for studying the features of the quarkgluon plasma. The ALICE detectors will identify particles at high momenta. In particular the HMPID would identify kaons with 1 ≤ p ≤ 3 GeV/c, therefore it will be possible to identify φ-mesons through the channel φ → K+K− up to 6 GeV/c. In this paper will be shown the physical motivations for the study of φ-meson and its invariant mass spectrum