München 2009 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 102: Niederenergie-Neutrinophysik & Suche nach dunkler Materie 3
T 102.3: Vortrag
Mittwoch, 11. März 2009, 17:20–17:35, A140
Development of Cryogenic Composite Detectors for the Dark Matter Experiments CRESST and EURECA — •Sabine Roth1, Christian Ciemniak1, Chiara Coppi1, Franz von Feilitzsch1, Achim Gütlein1, Christian Isaila1, Jean-Côme Lanfranchi1, Sebastian Pfister1, Walter Potzel1, and Wolfgang Westphal1,2 — 1Physik-Department E15, Technische Universität München, James-Franck-Straße, D-85748 Garching — 2Deceased
In the direct dark matter search experiment CRESST as well as in the EURECA project, cryogenic detectors are used as targets for the WIMP search. In order to enable a mass production of these detectors, a so-called composite detector design was introduced. This design involves a separation of the sensor production, i.e. the deposition of the utilized transition edge sensors (TESs), from the annealing process of the absorber crystals. The TES is produced on a separate crystal substrate. Thereafter, the substrate is glued onto the absorber crystal. To optimize and understand such a composite detector we developed a thermal detector model, successfully explaining the pulse shapes of the observed signals.
This work has been supported by funds of the DFG (SFB/Transregio 27: Neutrinos and Beyond), the Munich Cluster of Excellence (Origin and Structure of the Universe) and the Maier-Leibnitz-Laboratorium (Garching).