ARIADNE is a 1-ton dual-phase Time Projection Chamber (TPC) with a novel optical readout.
The secondary scintillation light produced in the holes of a THick Gas Electron Multiplier (THGEM) is captured by Electron Multiplying Charge Coupled Device (EMCCD) cameras or fast TPX3Cams mounted externally via glass viewports. Optical readout has the potential to be a cost effective alternative to charge readout in future LArTPCs. First ever optical images of argon interactions from the operation of the ARIADNE detector at the CERN T9 testbeam are presented. 3D track reconstruction of cosmic muons collected at the University of Liverpool is also detailed.