Distillation of Liquid Xenon to Remove Krypton

TL;DR

This paper reports the development of a high-performance distillation system that effectively removes krypton from liquid xenon, achieving extremely high purity levels crucial for sensitive dark matter detection experiments.

Contribution

The paper introduces a novel distillation system capable of achieving unprecedented krypton purity levels in xenon, enhancing the feasibility of low-background physics experiments.

Findings

Achieved Kr/Xe purity of ~3×10^{-12}

Demonstrated effectiveness of the distillation system

Facilitates high-sensitivity dark matter searches

Abstract

A high performance distillation system to remove krypton from xenon was constructed, and a purity level of Kr/Xe = $\sim 3 \times 10^{-12}$ was achieved. This development is crucial in facilitating high sensitivity low background experiments such as the search for dark matter in the universe.