Heidelberg 2015 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 70: Instrumentation 20
HK 70.3: Vortrag
Freitag, 27. März 2015, 15:15–15:30, M/HS2
Performance of BEGe detectors for GERDA Phase II — •Andrea Lazzaro for the GERDA collaboration — Physik-Department E15, Technische Universität München, Germany
After the end of the data–taking for GERDA Phase I, the apparatus has been upgraded to fulfill the requirements of the second phase. Phase II sensitivity will be driven by 30 custom made BEGe detectors. This detectors are now available and can be operated in phaseII configuration in the GERDA cryostat together with the liquid argon scintillation veto.
The performances of BEGe detectors in liquid argon will be presented in this talk. Besides the spectroscopy capability, the focus will be placed on the expectations in terms of background rejection via pulse shape discrimination (PSD). In particular the main goal the BEGe’s pulse shape analysis is to discriminate surface events produced by beta emitters (e.g. 42K) present in the liquid Ar.
This work was supported in part by BMBF (05A14W03).