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Trace radioactive impurities in final construction materials for EXO-200
Leonard, D.S.,Auty, D.J.,Didberidze, T.,Gornea, R.,Grinberg, P.,MacLellan, R.,Methven, B.,Piepke, A.,Vuilleumier, J.-L.,Albert, J.B.,Anton, G.,Badhrees, I.,Barbeau, P.S.,Bayerlein, R.,Beck, D.,Belov, Elsevier 2017 Nuclear instruments & methods in physics research. Vol.871 No.-
<P><B>Abstract</B></P> <P>We report results from a systematic measurement campaign conducted to identify low radioactivity materials for the construction of the EXO-200 double beta decay experiment. Partial results from this campaign have already been reported in a 2008 paper by the EXO collaboration. Here we release the remaining data, collected since 2007, to the public. The data reported were obtained using a variety of analytic techniques. The measurement sensitivities are among the best in the field. Construction of the EXO-200 detector has been concluded, and Phase-I data was taken from 2011 to 2014. The detector’s extremely low background implicitly verifies the measurements and the analysis assumptions made during construction and reported in this paper.</P>