Abstract
The DUNE experimental group at UNICAMP conceived a new concept for detecting liquid argon (LAr) scintillation light in large LAr Time Projection Chambers (TPC) like those foreseen for the far detector of the DUNE experiment. This new device, called ARAPUCA (Argon R & D Advanced Program at UNICAMP), is based on the use of a specific optical filter (a dichroic filter) and of a smart techniq…