Regensburg 2016 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 19: Superconductivity: Poster Session

TT 19.54: Poster

Montag, 7. März 2016, 15:00–18:00, Poster D

Development of phonon and photon detectors for rare events searches using scintillating crystals — •Felix Ahrens¹, Christian Enss¹, Andreas Fleischmann¹, Loredana Gastaldo¹, Clemens Hassel¹, Sebastian Hendricks¹, Sebastian Kempf¹, Yong-Hamb Kim², Martin Loidl³, Xavier-François Navick³, and Matias Rodrigues³ — ¹Kirchhoff-Institut für Physik, Universität Heidelberg, Deutschland — ²Korea Research Institute of Standards and Science, Daejeon, Rep. of Korea — ³Commissariat à l’énergie atomique, Saclay, France

The use of scintillating crystals in cryogenic experiments searching for neutrinoless double beta decay and for direct interaction of dark matter particles allows for an efficient background reduction due to particle discrimination. We develop phonon and photon detectors based on metallic magnetic calorimeters (MMCs) to perform simultaneous measurements of heat and light generated by the interaction of a particle in a scintillating crystal. As designed we expect for the phonon sensor an energy resolution of Δ E_FWHM<100 eV and a signal rise time τ<200 µs whereas for the photon detector we expect Δ E_FWHM<5 eV and τ<50 µs. We discuss the design and the fabrication of these detectors and present recent results.