Study of scintillation light collection, production and propagation in a 4 tonne dual-phase LArTPC

Abstract The 3×1×1 m 3 demonstrator is a dual phase liquid argon time projection chamber that has recorded cosmic rays events in 2017 at CERN. light signal these detectors crucial to provide precise timing capabilities. performance of the photon detection system, composed five PMTs, are discussed. collected scintillation and electroluminescence created by passing particles been studied various detector conditions. In particular, production propagation processes have analyzed compared simulations, improving understanding some properties.