Bulletin of the American Physical Society
APS April Meeting 2019
Volume 64, Number 3
Saturday–Tuesday, April 13–16, 2019; Denver, Colorado
Session Q10: WIMP Dark Matter III
10:45 AM–12:33 PM,
Monday, April 15, 2019
Sheraton
Room: Governor's Square 12
Sponsoring
Unit:
DPF
Chair: Ray Bunker, PNNL
Abstract: Q10.00007 : Emanation and Diffusion of Radon Through Gasket Materials for SuperCDMS SNOLAB*
11:57 AM–12:09 PM
View Presentation Abstract
Presenter:
Brandon M DeVries
(South Dakota School of Mines and Technology)
Authors:
Brandon M DeVries
(South Dakota School of Mines and Technology)
Michael Bowles
(South Dakota School of Mines and Technology)
Richard William Schnee
(South Dakota School of Mines and Technology)
Collaboration:
SuperCDMS collaboration
The SuperCDMS SNOLAB experiment, currently under construction, will attempt to directly detect dark matter particles. Shielding surrounding the experiment’s detectors will reduce interactions of particles from radioactivity and cosmic rays. A gas purge will remove radon from gaps in the shielding to reduce backgrounds further. Gaskets used to seal this purge volume must allow sufficiently low radon diffusion through them while emanating little radon into the purge volume. I will describe measurements of radon diffusion through gaskets made of EPDM, Zip-A-Way, and Silicone, inferred from the time dependence of radon concentration in a volume separated from a high-radon volume by the gasket in question. Results of these diffusion measurements and of the radon emanation measurements will be given in the presentation.
*This work was supported in part by the National Science Foundation (Grant No. PHY-1506033)
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