Hamburg 2016 – scientific programme

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T: Fachverband Teilchenphysik

T 62: Suche nach dunkler Materie III

T 62.8: Talk

Tuesday, March 1, 2016, 18:35–18:50, VMP9 SR 28

The CRESST-III Detector Module — •Marc Wüstrich for the CRESST collaboration — Max-Planck-Institut f. Physik (Werner-Heisenberg-Institut)

The direct dark matter experiment CRESST uses scintillating calorimeters to detected WIMP induced nuclear scattering in CaWO₄ single crystals. Equipped with transition edge sensors (TESs), these detectors can achieve detection thresholds well below 1keV. The last physics run of CRESST-II proved the high potential of the experiment especially for small WIMP masses and triggered the development of a new detector module using much smaller CaWO₄ main absorbers. The upcoming CRESST-III run will mainly be equipped with these newly developed modules, which combine a fully scintillating detector housing with an improved detection threshold (<100keV). While many features of the new module were adapted from previous module designs in an improved way, also new features are implemented like instrumented sticks (iSticks) holding the crystals and optimized TES structures for phonon and light detectors. First tests above ground validated the improved performance of these detector modules and promise to explore new regions in the WIMP parameter space in the next CRESST-III run.