Trace radioactive impurities in final construction materials for EXO-200

• Published in: Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2017-11, Vol.871 (C), p.169-179
• Main Authors: Leonard, D.S., Auty, D.J., Didberidze, T., 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, V., Breidenbach, M., Brunner, T., Cao, G.F., Cen, W.R., Chambers, C., Cleveland, B., Coon, M., Craycraft, A., Cree, W., Daniels, T., Danilov, M., Daugherty, S.J., Daughhetee, J., Davis, J., Delaquis, S., Mesrobian-Kabakian, A. Der, DeVoe, R., Dilling, J., Dolgolenko, A., Dolinski, M.J., Fairbank, W., Farine, J., Feyzbakhsh, S., Fierlinger, P., Fudenberg, D., Graham, K., Gratta, G., Hall, C., Herrin, S., Hoessl, J., Hufschmidt, P., Hughes, M., Jamil, A., Jewell, M.J., Johnson, A., Johnston, S., Karelin, A., Kaufman, L.J., Koffas, T., Kravitz, S., Krücken, R., Kuchenkov, A., Kumar, K.S., Lan, Y., LePort, F., Li, S., Licciardi, C., Lin, Y.H., Mackay, D., Marino, M.G., Michel, T., Mong, B., Moore, D., Murray, K., Neilson, R., Nelson, R., Njoya, O., Odian, A., Ostrovskiy, I., Pocar, A., Pushkin, K., Retière, F., Rowson, P.C., Russell, J.J., Schubert, A., Sinclair, D., Smith, E., Stekhanov, V., Tarka, M., Tolba, T., Tsang, R., Wagenpfeil, M., Waite, A., Walton, J., Walton, T., Wamba, K., Weber, M., Wen, L.J., Wichoski, U., Wodin, J., Yang, L., Yen, Y.-R., Zeldovich, O.Ya, Zettlemoyer, J., Ziegler, T.
• Format: Article
• Language: English
• Subjects: Alpha counting; Double beta decay; EXO; EXO-200; EXOEXO-200; Germanium counting; INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; Low background; Mass spectrometry; Mass spectroscopy; Neutron activation analysis; Radiopurity; Ultra-trace analysis
• ISSN: 0168-9002; 1872-9576
• DOI: 10.1016/j.nima.2017.04.049

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.