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T: Fachverband Teilchenphysik

T 16: Neutrinoloser Doppelbeta-Zerfall I

T 16.4: Vortrag

Montag, 29. Februar 2016, 11:50–12:05, VMP9 SR 07

Study of pulse shapes in Ge detectors with PET — Peter Grabmayr, Alexander Hegai, Josef Jochum, Christopher Schmitt, and •Ann-Kathrin Schütz for the GERDA collaboration — Eberhard Karls Univerität Tübingen

The Gerda collaboration aims to determine the half life of the neutrinoless double beta decay (0νββ) of ⁷⁶Ge. For Phase II Gerda wants to reduce the background contribution significantly by active background-suppression techniques. One of such techniques is the pulse shape analysis of signals induced by the interaction of radiation with the detector. The pulse shapes depend not only on the energy of the interacting gamma, the geometry and field configuration but also on the location of interaction in the crystal. The waveform and the location of the interaction in the germanium can be determined by positron-emission-tomography (PET). First results of this novel pulse shape study with the PET will be presented in this talk. This work was partly funded by the BMBF.