Dresden 2013 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 106: Suche nach Dunkler Materie 2
T 106.5: Vortrag
Montag, 4. März 2013, 17:50–18:05, HSZ-103
Production and Characterization of CaWO4 Crystals for CRESST and EURECA — •Moritz von Sivers1, Andrea Münster1, Andreas Ertl1, Achim Gütlein1, Jean-Come Lanfranchi1, Walter Potzel1, Sabine Roth1, Daniel Simon1, Stephan Scholl1, Raimund Strauss1, Stephan Wawoczny1, Michael Willers1, Marc Wüstrich1, Andreas Zöller1, and Andreas Erb2 — 1Lehrstuhl für Experimentelle Astroteilchenphysik, Physik Department, Technische Universität München, James Franck Straße 1, 85748 Garching — 2Walther-Meißner Institut für Tieftemperaturforschung, Walther-Meißner-Straße 8, 85748 Garching
Scintillating CaWO4 single crystals are currently used as target material in the cryogenic direct dark matter search experiment CRESST-II and will also be employed in the future EURECA experiment.
To ensure the availability of crystals that meet the requirements of these experiments, they are being produced in a dedicated Czochralski furnace at the crystal laboratory of the Technische Universität München in Garching.
An overview of the crystal-growth process and results of measurements of the crystals’ optical and scintillation properties and their radiopurity will be presented.
This research was supported by the DFG cluster of excellence: Origin and Structure of the Universe (www.universecluster.de) and by the BMBF: Project 05A11WOC EURECAXENON.