18–20 Mar 2015
US/Pacific timezone

Ultra-low Level Radon Assays in Gases

19 Mar 2015, 17:00
20m
Presentation Contributed Session 7

Speaker

Mr XinRan Liu (University College London)

Description

A "Radon Concentration Line" (RnCL) was developed to be used in conjunction with a state-of-the-art radon detector to achieve world leading sensitivities to 222Rn content in large gas volumes to the level of a few μBq/m3. A gas purification system was developed and installed which has demonstrated radon suppression by several orders of magnitude depending on the carrier gas. This apparatus has now been commissioned and measurements of cylindered gas has been made to confirm radon suppression. The results from measurements of radon content in gases used in SuperNEMO using the RnCL will be presented. This system can also be used for radon emanation measurements from construction material samples when coupled to a dedicated emanation chamber. Results from both radon emanation and radon diffusion studies will also be presented.

Primary author

Mr XinRan Liu (University College London)

Presentation materials