Speaker
Description
Adding light dopant gasses like hydrogen to liquid xenon detectors is expected to improve their sensitivity to low-energy recoils—and consequently sub-GeV dark matter. HydroX is a multi-institution effort to explore the feasibility of this method for use in current and future liquid-xenon dark matter experiments, such as LZ. As part of this initiative, we have constructed a test stand at SLAC to measure the effect of hydrogen on scintillation and electron transport in gaseous xenon. In this talk, I will provide an overview of the test stand design, which includes a gaseous xenon time projection chamber and plumbing to enable hydrogen injection, circulation, and removal. I will present preliminary results and discuss plans for future studies.
