The ALICE experiment (A Large Ion Collider Experiment) is an international collaboration (800 co-authors) conducting research with heavy cores of the highest energy reached so far, 14 TeV for proton-proton collisions (pp). ALICE is one of the 4 main experiments of the Large Hadron Collider (LHC). It has 18 complementary detection systems to study collisions, from pp to lead-lead (PbPb) in which thousands of waste are produced. In this instrument, the impulse is measured and the identification of hadrons, electrons and photons is carried out, in event-by-event mode. Its configuration allows the reconstruction of the trajectories, thus as the identification of the particles that are produced in its central region. Until the end of 2018, ALICE used a detector system called V0 for the characterization and selection of events based on global properties, such as centrality and multiplicity, as well as to determine the orientation of the interaction plane. The V0 consists of two modules, one of them, the V0A, was built at IFUNAM.
ALICE's main mission is to study quantum chromodynamic (QCD), via the characterization of Cuarks and Gluons Plasma (QGP). One of his notable findings for PbPb collisions is the hydrodynamic-like behavior that the QGP exhibits. ALICE has also found signs of such a phenomenon in pp collisions. A line of research initiated by the IFUNAM Group in ALICE is the production of light nuclei and antinuclei (eg Phys. Rev. C 97 (2018) 024615). Faced with the remodeling of ALICE, supported by CONACYT and UNAM, the IFUNAM Group has been building for 5 year the detector that will replace the V0A, now called V0-plus (V0 +). The main instrumental challenge has been to improve the temporal resolution by a factor of 5, reaching ~ 200 ps. Until the end of 2018, the test carried out on the new design have been very successful. By 2021, the V0+ was integrated into CERN
