The pixelation technique applied to FARCOS correlator in the CHIFAR experiment

The CHIFAR experiment, carried out at Laboratori Nazionali del Sud-INFN (INFN-LNS), was proposed to investigate the emission probability of Intermediate Mass Fragments (IMFs) in non-central Heavy Ion (HI) collisions. The aim was the study of the features of the Equation of State of the nuclear matter, focusing also on the role of the isospin degree of freedom of the colliding nuclei. The CHIMERA Collaboration has investigated at the incident beam energy of 20 AMeV some nuclear reactions including:124Sn +64 Ni,112Sn +58 Ni and124Xe +64 Zn. The experimental setup was equipped with ten telescopes of the FARCOS (Femtoscope ARray for COrrelation and Spectroscopy) correlator in its final configuration, coupled with the 4π CHIMERA multi-detector allowing the study of correlations among IMFs and light charged particles produced in a nuclear reaction. The results on the energy calibration, on the energy resolution and on the particle identification phase of the FARCOS correlator used in the CHIFAR experiment are reported. The so-called “pixelation technique” is the last step of the analysis explained here.