Upgrades for The Fast Interaction Trigger Detector of ALICE at the LHC

CERN (European Center for Nuclear Research) is a global laboratory that studies proton and heavy-ion collisions at the Large Hadron Collider (LHC). ALICE (A Large Ion Collider Experiment) is one of four major experiments at the LHC. ALICE is dedicated to the study of the transition of matter to Quark-Gluon Plasma in heavy ion collisions. In Run 1 and 2, ALICE had two sub-detectors, the T0, and V0, that provided minimum bias and multiplicity trigger, beam-gas rejection, collision time, online multiplicity, and event plane determination. For Run 3 both detectors will be replaced by the Fast Interaction Trigger (FIT) system. This upgrade will produce a more precise and accurate location and time of collision at the interaction point. In this talk we describe the FIT upgrade; show the proposed characteristics of the FIT detectors and present test performance results. The detector tests were done at CERN by running six different tasks for validating the trends and parameters of the MCPs. Further analysis and interpretation of the module characteristics are underway at Chicago State University.