Dresden 2013 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 66: Astroteilchenphysik
HK 66.6: Vortrag
Donnerstag, 7. März 2013, 15:30–15:45, HSZ-401
Application of the A/E pulse shape discrimination method to first Ge-76 enriched BEGe detectors operated in GERDA — •Andrea Lazzaro, Matteo Agostini, Dusan Budjas, and Stefan Schoenert — Physik-Department E15, Technische Universität München, Germany
In 2013 the Gerda experiment will be upgraded to its second phase with more than double of the current 76Ge mass. The additional diodes are custom made Broad Energy Germanium (BEGe) detectors. This design has been chosen to enhance the pulse shape discrimination (PSD) capability, with respect to the Phase I coaxial detectors. The goal of Phase II is to improve by one order of magnitude the current background index; the PSD will bring a major contribution to this result.
Since summer 2012 the first set of five enriched BEGe detectors are operated in Gerda Phase I. This offers us the possibility to test the PSD performances and the signal analysis in an environment as close as possible to the Gerda Phase II configuration. In this talk I will present the A/E analysis, the calibration of the cut parameters and the results in terms of background reduction for the data taken with these enriched BEGe.
This work was supported in part by BMBF (05A11W01).