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Intrinsic backgrounds from Rn and Kr in the XENON100 experiment


Baudis, Laura; Capelli, Chiara; Brown, Adam; Manfredini, Alessandro; Galloway, Michelle; Reichard, Shayne; Volta, Giovanni; Peres, R; et al (2018). Intrinsic backgrounds from Rn and Kr in the XENON100 experiment. European Physical Journal C - Particles and Fields, 78(2):132.

Abstract

In this paper, we describe the XENON100 data analyses used to assess the target-intrinsic background sources radon ( Open image in new window ), thoron ( Open image in new window ) and krypton ( Open image in new window ). We detail the event selections of high-energy alpha particles and decay-specific delayed coincidences. We derive distributions of the individual radionuclides inside the detector and quantify their abundances during the main three science runs of the experiment over a period of ∼4years, from January 2010 to January 2014. We compare our results to external measurements of radon emanation and krypton concentrations where we find good agreement. We report an observed reduction in concentrations of radon daughters that we attribute to the plating-out of charged ions on the negatively biased cathode.

Abstract

In this paper, we describe the XENON100 data analyses used to assess the target-intrinsic background sources radon ( Open image in new window ), thoron ( Open image in new window ) and krypton ( Open image in new window ). We detail the event selections of high-energy alpha particles and decay-specific delayed coincidences. We derive distributions of the individual radionuclides inside the detector and quantify their abundances during the main three science runs of the experiment over a period of ∼4years, from January 2010 to January 2014. We compare our results to external measurements of radon emanation and krypton concentrations where we find good agreement. We report an observed reduction in concentrations of radon daughters that we attribute to the plating-out of charged ions on the negatively biased cathode.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:1 February 2018
Deposited On:19 Dec 2018 14:54
Last Modified:27 Oct 2019 06:56
Publisher:Springer
ISSN:1434-6044
OA Status:Gold
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1140/epjc/s10052-018-5565-y

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