A Temperature-driven Liquid Xenon Recirculation and Purification System

POSTER

Abstract

We have built a liquid xenon recirculation and purification system in order to address the problem of inconsistencies in our Ba$^{+}$ fluorescence spectra. In our previous work our liquid xenon purity system did not include recirculation, and the liquid xenon contained ppm of electronegative impurities. By continuous recirculation through a getter purifier, ppb purity is expected. Our recirculation system is driven thermally, by applying heat to the evaporation region, instead of by the pump method used by others. The advantage of thermal driven recirculation is that there are no pressure surges. Therefore, the liquid is calm as it evaporates and condenses. This gives excellent optical quality for Ba$^{+}$ spectroscopy in liquid xenon. The goal of this work is to detect fluorescence from single Ba$^{+}$ daughter ions in the Enriched Xenon Observatory (EXO) double beta decay experiment.

Authors

  • Julio Cesar Benitez-Medina

  • Stanley C. Solomon

    University of California and Lawrence Berkeley National Laboratory, Rutgers University, Utah State University, Brigham Young University, University of Utah, NASA, Duke University, FMA Research, Colorado State University, Dartmouth University, Idaho State University, Physics Department, Idaho State University, Physics Department, Utah State University, Los Alamos National Laboratory, Department of Physics, Nanjing University, China, University of California at Riverside, Physics Department, Colorado School of Mines, Physics Department, University of Utah, University of Nebraska - Lincoln, USU, Society of Physics Students, Arizona State University, Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan, LANSCE-LC, Los Alamos National Laboratory, Van der Waals-Zeeman Institute, University of Amsterdam, Chemistry and Physics Dept., Virginia State University, University of Saskatchewan, Canada, Chalk River Laboratories, Physics Dept, Oxford University, Physics Dept, Utah State University, Sandia National Laboratories, National Renewable Energy Laboratory, DOE Center for Integrated Nanotechnologies, Sandia National Laboratories, National Center for Atmospheric Research