2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/195716The technique to realize 3D position sensitivity in a two-phase xenon time projection chamber (XeTPC) for dark matter search is described. Results from a prototype detector (XENON3) are presented.Presented at the 7th UCLA Symposium on "Sources and Detection of Dark Matter and Dark Energy in the Universe"Astrophysicstext