56246 20170504091403.0 doi 10.1088/1475-7516/2014/05/018 sideral 86868 ART-2014-86868 eng Münster, A. Radiopurity of CaWO4 crystals for direct dark matter search with CRESST and EURECA 2014 Access copy available to the general public Unrestricted The direct dark matter search experiment CRESST uses scintillating CaWO4 single crystals as targets for possible WIMP scatterings. An intrinsic radioactive contami- nation of the crystals as low as possible is crucial for the sensitivity of the detectors. In the past CaWO4 crystals operated in CRESST were produced by institutes in Russia and the Ukraine. Since 2011 CaWO4 crystals have also been grown at the crystal laboratory of the Technische Universit ¨at Mu ¨nchen (TUM) to better meet the requirements of CRESST and of the future tonne-scale multi-material experiment EURECA. The radiopurity of the raw mate- rials and of first TUM-grown crystals was measured by ultra-low background ¿-spectrometry. Two TUM-grown crystals were also operated as low-temperature detectors at a test setup in the Gran Sasso underground laboratory. These measurements were used to determine the crystals’ intrinsic a-activities which were compared to those of crystals produced at other institutes. The total a-activities of TUM-grown crystals as low as 1.23 ± 0.06 mBq/kg were found to be significantly smaller than the activities of crystals grown at other institutes typically ranging between ~ 15 mBq/kg and ~ 35 mBq/kg. info:eu-repo/grantAgreement/ES/MINECO/Consolider-Ingenio2010-MULTI-DARK-CSD2009-00064 info:eu-repo/grantAgreement/ES/MINECO-FEDER/FPA2011-23749 info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 5.81 2014 PHYSICS, PARTICLES & FIELDS 4 / 27 = 0.148 2014 Q1 T1 ASTRONOMY & ASTROPHYSICS 10 / 60 = 0.167 2014 Q1 T1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Sivers, M.V. Angloher, G. Bento, A. Bucci, C. Canonica, L. Erb, A. Feilitzsch, F.V. Gorla, P. Gütlein, A. Hauff, D. Jochum, J. Kraus, H. Lanfranchi, J.C Laubenstein, M. Loebell, J. (orcid)0000-0002-2793-7544 Ortigoza, Y. Universidad de Zaragoza Petricca, F. Potzel, W. Pröbst, F. (orcid)0000-0001-8732-8196 Puimedon, J. Universidad de Zaragoza Reindl, F. Roth, S. Rottler, K. Sailer, C. Schäffner, K. Schieck, J. Scholl, S. Schönert, S. Seidel, W. Stodolsky, L. Strandhagen, C. Strauss, R. Tanzke, A. Uffinger, M. Ulrich, A. Usherov, I. Wawoczny, S. Willers, M. Wüstrich, M. Zöller, A. 2004 390 Universidad de Zaragoza Departamento de Física Teórica Física Atómica, Molecular y Nuclear 2014, 5 (2014), [15 pp] J. Cosmol. Astropart. Phys. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS 1475-7516 592925 http://zaguan.unizar.es/record/56246/files/texto_completo.pdf Postprint 72621 http://zaguan.unizar.es/record/56246/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:56246 articulos driver 2017-05-04-09:11:39 ARTICLE