[en] The authors show the layout of the experiment HISS 320. This experiment is designed to capture and analyze all charged projectile fragments produced in the interaction of 2 GeV/nucleon 12C with C, CH, Cu or U targets. Analysis consists of identifying charge, mass and vector momentum for each fragment. This is accomplished through use of a drift chamber system to give trajectories through the magnetic field of the HISS dipole, combined with velocity measurement provided by a time-of-flight scintillator array called the TOF wall. This report describes the present status of the TOF wall system