Online ^{222}Rn removal by cryogenic distillation in the XENON100 experiment
Abstract
We describe the purification of xenon from traces of the radioactive noble gas radon using a cryogenic distillation column. The distillation column was integrated into the gas purification loop of the XENON100 detector for online radon removal. This enabled us to significantly reduce the constant ^{222}Rn background originating from radon emanation. After inserting an auxiliary ^{222}Rn emanation source in the gas loop, we determined a radon reduction factor of R > 27 (95% C.L.) for the distillation column by monitoring the ^{222}Rn activity concentration inside the XENON100 detector.
- Publication:
-
European Physical Journal C
- Pub Date:
- June 2017
- DOI:
- 10.1140/epjc/s10052-017-4902-x
- Bibcode:
- 2017EPJC...77..358A