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T: Fachverband Teilchenphysik

T 54: Experimentelle Methoden der Astroteilchenphysik 2

T 54.4: Talk

Tuesday, March 25, 2014, 17:30–17:45, P7

Development of a combined photon and phonon detector for rare-event experiments — •Clemens Hassel¹, Mathias Wegner¹, Philipp C.-O. Ranitzsch¹, Sebastian Kempf¹, Loredana Gastaldo¹, Andreas Fleischmann¹, Christian Enss¹, Xavier-Francois Navick², Martin Loidl², Matias Rodrigues², Yong-Hamb Kim³, and Won-Sik Yoon³ — ¹Kirchhoff Institute for Physics, Heidelberg University, Heidelberg, Germany — ²CEA, Saclay, France — ³Korea Research Institute of Standards and Science, Daejeon, Rep. of Korea

We developed a combined photon and phonon sensor to be applied in scintillator-based experiments searching for neutrinoless double beta decays and in experiments searching for dark matter such as weakly interacting massive particles (WIMPs). This research is motivated by the need to reduce the background of such experiment by increasing the discrimination among different types of particles interacting in the detector and to lower the energy threshold to be able to investigate the region of interest for low mass WIMPs. We expect to achieve an energy resolution below 100 eV (FWHM) and a signal rise-time of less than 200 microseconds in the phonon detector. For the photon detector we expect an energy resolution between 3 eV and 10 eV (FWHM) and a signal rise-time below 50 microseconds. We discuss the design and fabrication issues of the combined photon and phonon detector.