May 23 – 27, 2017
Asia/Seoul timezone

Radon Mitigation for the SuperCDMS SNOLAB Dark Matter Experiment

May 25, 2017, 11:00 AM


Oral Session 4


Mr Joseph Street (SD Mines)


A potential background for the SuperCDMS SNOLAB dark matter experiment is from radon daughters that have plated out onto detector surfaces. To reach background requirements, understanding plate-out rates during detector fabrication as well as mitigating radon in surrounding air is critical. A radon mitigated cleanroom planned at SNOLAB builds upon a system commissioned at the South Dakota School of Mines & Technology (SD Mines). The ultra-low radon cleanroom at SD Mines has air supplied by an optimized vacuum-swing-adsorption radon mitigation system that has achieved > 1000× reduction for a cleanroom activity consistent with zero and < 0.067 Bq/m$^3$ at 90% confidence. Our simulation of this system, validated against calibration data, provides opportunity for increased understanding and optimization for this and future systems.

Primary author

Mr Joseph Street (SD Mines)


Ms Christine Hjelmfelt (SD Mines) Mr Colter Dunagen (SD Mines) Mr Daniel Tronstad (SD Mines) Dr Eric Miller (SD Mines) Dr Raymond Bunker (PNNL) Prof. Richard Schnee (SD Mines) Mr Xavier Loose (SD Mines)

Presentation materials