Münster 2017 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 81: Neutrinophysik 7 (Doppelbetazerfall, sterile Neutrinos)

T 81.3: Vortrag

Mittwoch, 29. März 2017, 17:20–17:35, VSH 118

Charaterization of a segmented broad energy prototype Germanium detector — Allen Caldwell, Iris Abt, Bela Majorovits, •Xiang Liu, Chris Gooch, Martin Schuster, and Jinglu Ma — Max Planck Institut fuer Physik, Muenchen

High purity Germanium detector (HPGe) has been playing an important role in fundamental research, especially in the searches for neutrinoless double beta decay in Ge76 (GERDA, Majorana) and WIMP dark matter candidate (CDEX, CoGeNT). In both cases, background identification and reduction is very important and extremely challenging. A four-fold segmented broad energy (BEGe) prototype HPGe detector, SegBEGe, was designed at the Max Planck Institut fuer Physik (MPI) in Munich and fabricated at Canberra Lingolsheim (now Mirion Technologies (Canberra) SAS). Results from the characterization of this prototype SegBEGe are presented. Similar to a standard BEGe detector, it provides the information to distinguish so-called single-site and multi-site events through a standard pulse shape analysis. In addition, the mirror pulses recorded in segments without energy deposition make it possible to locate the energy deposition in the segment in between with a precision of up to mm. This could contribute to background identification for the future ton-scale Germanium detector experiment.