Liquid-phase purification for multi-tonne xenon detectors

Abstract

As liquid xenon detectors grow in scale, novel techniques are required to maintain sufficient purity for charges to survive across longer drifts. The Xeclipse test facility at Columbia University was built to test the removal of electronegative impurities through cryogenic filtration powered by a liquid xenon pump, enabling a far higher mass flow rate than gas-phase purification through heated getters. In this paper, we present results from Xeclipse, including measured oxygen removal rates for two sorbent materials, which were used to guide the design and commissioning of the XENONnT liquid purification system. Thanks to this innovation, XENONnT has achieved an electron lifetime greater than 10 ms in an 8.6 tonne total mass, perhaps the highest purity ever measured in a liquid xenon detector.

References in corpus (5)

• Results from a search for dark matter in the complete LUX exposure
• Search for Coherent Elastic Scattering of Solar ${}^8$B Neutrinos in the XENON1T Dark Matter Experiment
• Experimental observation of an extremely high electron lifetime with the ICARUS-T600 LAr-TPC
• A Regenerable Filter for Liquid Argon Purification
• Study of a zirconium getter for purification of xenon gas

Cited by in corpus (14)

• First Dark Matter Search with Nuclear Recoils from the XENONnT Experiment
• Search for New Physics in Electronic Recoil Data from XENONnT
• The XENONnT Dark Matter Experiment
• PandaX-xT: a Multi-ten-tonne Liquid Xenon Observatory at the China Jinping Underground Laboratory
• WIMP Dark Matter Search using a 3.1 Tonne-Year Exposure of the XENONnT Experiment
• The XLZD Design Book: Towards the Next-Generation Liquid Xenon Observatory for Dark Matter and Neutrino Physics
• Electron transport measurements in liquid xenon with Xenoscope, a large-scale DARWIN demonstrator
• GPU-based optical simulation of the DARWIN detector
• Benchmarking the design of the cryogenics system for the underground argon in DarkSide-20k
• Challenging Spontaneous Quantum Collapse with XENONnT
• Design Challenges for a Future Liquid Xenon Observatory
• Light Dark Matter Search with 7.8 Tonne-Year of Ionization-Only Data in XENONnT
• A liquid-phase loop-mode argon purification system
• Flow and thermal modelling of the argon volume in the DarkSide-20k TPC