Radon Emanation Measurements for The LZ Dark Matter Experiment

LUX-ZEPLIN (LZ) is a liquid xenon dark matter experiment being built to search for Weakly Interacting Massive Particles (WIMPs). The expected dominate background of LZ is from daughters of radon that emanate from materials touching the liquid xenon. To measure and help minimize this background, materials are left to emanate in chambers and the radon is then collected and assayed. Gas panels are used to flow the radon sample from the emanation chambers to the alpha detector. A new mobile gas panel was built in order to harvest radon from detector components being assembled and tested at the Sanford Underground Research Facility (SURF) in Lead, SD. The new panel has an increased flow capacity to be used for larger items such as the LZ Inner Cryostat Vessel (ICV) and uses a portable trap so that radon collected can be moved with ease between the SURF and the radon counter housed at South Dakota School of Mines and Technology. Results from radon emanation measurements will be presented.