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arXiv · 1506.00929

Construction and Measurements of an Improved Vacuum-Swing-Adsorption Radon-Mitigation System

J. Street·R. Bunker·C. Dunagan·X. Loose·R. W. Schnee·M. Stark·K. Sundarnath·D. Tronstad
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Abstract

In order to reduce backgrounds from radon-daughter plate-out onto detector surfaces, an ultra-low-radon cleanroom is being commissioned at the South Dakota School of Mines and Technology. An improved vacuum-swing-adsorption radon mitigation system and cleanroom build upon a previous design implemented at Syracuse University that achieved radon levels of $\sim$0.2$\,$Bq$\,$m$^{-3}$. This improved system will employ a better pump and larger carbon beds feeding a redesigned cleanroom with an internal HVAC unit and aged water for humidification. With the rebuilt (original) radon mitigation system, the new low-radon cleanroom has already achieved a $>$$\,$300$\times$ reduction from an input activity of $58.6\pm0.7$$\,$Bq$\,$m$^{-3}$ to a cleanroom activity of $0.13\pm0.06$$\,$Bq$\,$m$^{-3}$.

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J. Street, R. Bunker, C. Dunagan, X. Loose, R. W. Schnee, M. Stark, K. Sundarnath, D. Tronstad. 2015-06-02. Construction and Measurements of an Improved Vacuum-Swing-Adsorption Radon-Mitigation System. https://doi.org/10.1063/1.4928027

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