“…The instrumentation is complemented by rings of plastic scintillator doublet tiles (3×3 cm2, 0.7 cm thick) below the calorimeter (t0-layer), acting as a photon veto to suppress the 𝜋 0 background and providing timing information. Both the detectors are read out by WLS fibers placed on the frontal faces of the tiles and coupled to SiPMs [5,6].…”