Key points are not available for this paper at this time.
The XENON family of experiments have been at the forefront of direct dark matter searches for weak-scale dark matter for more than fifteen years. In this time, the program has scaled from a few-kilogram pathfinder detector to the current XENONnT holding 8.6 tonne of liquid xenon. Innovations in xenon handling, material selection and purification have allowed each detector generation to feature a lower background rate than the previous.
E. Aprile (Mon,) studied this question.