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Jul 24 – 28, 2017
Other Institutes
Canada/Eastern timezone

The nEXO radioassay program

Not scheduled
Alumni Hall

Alumni Hall

Poster Neutrinos Poster Session


Prof. Ryan MacLellan (University of South Dakota)


The two neutrino double-beta decay of $^{136}$Xe, with a half-life of $2.165\pm0.016\text{(stat.)}\pm0.059\text{(syst.)}\times10^{21}$y, is among the rarest nuclear processes ever directly observed. The hypothesized neutrinoless double-beta decay of $^{136}$Xe, which nEXO aims to observe, is expected to be that much rarer, with a half-life of at least $1\times10^{26}$y at 90% C.L. Sufficient suppression of backgrounds is, therefore, crucial to making a discovery possible. The bulk of these backgrounds for nEXO are expected to result from radioactivity in the detector components. Reducing this background contribution to a sufficiently low level requires a comprehensive material screening program. This poster describes the techniques the nEXO Collaboration employs, built on the highly successful program developed by EXO-200, in the assay of candidate materials for nEXO components. A summary of recently released results of these efforts will also be presented.

Primary author

Prof. Ryan MacLellan (University of South Dakota)

Presentation materials

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