Speaker
Description
Doping liquid argon (LAr) with a few parts per million (ppm) mass of xenon (Xe) is a known technique to modify the scintillation light properties. The energy deposited by charged particles crossing the detector is transferred from argon excimers to xenon excimers, through the process Ar2->ArXe->Xe2*, which emits photons with a longer wavelength. These effects are expected to affect the light yield, the light transport, and timing performance in large-scale detectors such as the Deep Underground Neutrino Experiment (DUNE). In this work, we use ProtoDUNE Vertical Drift (VD) cosmic-ray-tagger (CRT) data to study the properties and spatial dependence of photon detector responses in Xe-doped liquid argon, and to investigate their impact on photon detection performance.
