Speaker
Description
HydroX is a novel detector technology proposed to extend the sensitivity of liquid xenon (LXe) time projection chambers (TPCs) to sub-GeV dark matter by using hydrogen as a dopant to provide more favorable energy transfer from incident particles. Recently, there has been an expanded effort to test different light hydrocarbons as dopants with better solubility in LXe than H$_2$, and measure their effects on electron transport properties in LXe and scintillation light in liquid and gaseous Xe. This talk will give an overview of the effort to test ethane, C$_2$H$_6$, as a dopant in LXe using the dual-phase TPC test stand at the Liquid Noble Test Facility (LNTF) at SLAC. I will discuss modifications enabling dual-phase operation, including injection of ethane and circulation. I will share preliminary results on signal reduction from our 4kg-scale Xe TPC and discuss future work.