Dresden 2013 – scientific programme

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T: Fachverband Teilchenphysik

T 109: Experimentelle Techniken der Astroteilchenphysik 2

T 109.3: Talk

Monday, March 4, 2013, 17:20–17:35, HSZ-101

The Gerda Phase II detector assembly — •Tobias Bode¹, Bernhard Schwingenheuer², and Stefan Schönert¹ — ¹Physik-Department E15, Technische Universität München, Germany — ²Max-Planck-Institut für Kernphysik, Heidelberg, Germany

Phase II of the Gerda (Germanium Detector Array) experiment will continue the search for the neutrinoless double beta decay (0νββ) of ⁷⁶Ge. Prerequisites for Phase II are an increased target mass and a reduced background index of < 10⁻³ cts/(keV·kg·yr). Major hardware upgrades to achieve these requirements are scheduled for 2013. They include the deployment of a new radio pure low mass detector assembly. The structural properties of available radio pure materials and reduction of mass necessitate a change of the electrical contacting used to bias and read-out the detectors. The detector assembly design and the favored contacting solution will be presented. This work was in part funded by BMBF.