Hamburg 2016 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 98: Experimentelle Methoden III
T 98.7: Vortrag
Donnerstag, 3. März 2016, 18:25–18:40, VMP8 SR 105
Energy reconstruction methods for large coplanar quad-grid CdZnTe detectors — •Jan-Hendrik Arling, Claus Gößling, and Kevin Kröninger — TU Dortmund, Experimentelle Physik IV, Dortmund, D
The COBRA experiment will search for neutrinoless double beta-decay (0νββ) using CdZnTe semiconductor detectors. Currently a demonstrator setup consisting of 64 coplanar-grid (CPG) CdZnTe detectors with a volume of (1×1×1) cm3 each is under operation at the Gran Sasso Underground Laboratory (LNGS). The next step for the experiment will be the installation of an array of nine CdZnTe detectors with a volume of (2×2×1.5) cm3 and four CPG sectors with parallel readout each. Advantages of these larger detectors are a higher full-energy detection efficiency and a better surface-to-volume ratio. Up to now, the reconstruction schemes developed for the 1 cm3 detectors are also used for the 6 cm3 detectors. Consequentially the potential of improvements on the energy reconstruction will be investigated. An important topic in this context is the reconstruction of the interaction depth which is possible due to the coplanar-grid design. In this talk the newest results of the investigation of the reconstruction methods for 6 cm3 CdZnTe detectors will be presented and discussed.