Large Scale Pixel Anode

The goal of WP9 is to develop a novel pixel readout for large scale liquid argon TPCs targeting neutrino detection. Compared to the wire-based readout currently used in single-phase liquid-argon detectors, pixelated readout will reduce reconstruction ambiguities through the direct readout of 3D space points compared to the 2D projections used in current detectors and facilitate the production of readout elements compared to the DUNE large anode wire plane assemblies (APAs). A pixel pattern can be designed in a way that maximises the 3D reconstruction efficiency. Pixel PCB board designs for large scale anode planes using pixel tiles need to fulfil the tight requirement for mechanical and electrical tolerances defined by large scale cryogenic neutrino detectors. The outcome of this deliverable is the design of an optimised pixel tile pattern for the DUNE far detector, and the design and the construction of a prototype for large scale tile-based anode plane. The main applications are the DUNE far detector and the DUNE near detector, ArgonCube.