Würzburg 2018 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 43: Neutrinophysik II
T 43.6: Vortrag
Dienstag, 20. März 2018, 17:55–18:10, Z6 - SR 2.012
Status of the XDEM-Phase for the COBRA-Experiment — •Lucas Bodenstein-Dresler for the COBRA collaboration — TU Dortmund, Lehrstuhl für Experimentelle Physik IV, Otto-Hahn-Straße 4, 44227 Dortmund
The COBRA collaboration searches for neutrinoless double beta-decay. If this decay would be detected, it would proof that the neutrino is a Majorana particle.
The COBRA demonstrator is located at the Gran Sasso underground laboratory in Italy with a 4 × 4 × 4 array of 1 cm3 CdZnTe detectors. In the beginning of 2018, the setup will be upgraded with an extended demonstrator (XDEM). XDEM comprises of a new layer of nine CdZnTe detectors with (2 × 2 × 1,5) cm3 installed on top of the current inner housing. The goal of XDEM is to show that large-volume CdZnTe detectors can be used in low-background applications.
This talk will present the preparation of XDEM and the current status of the experiment. This includes the design of a new detector-holder and a new cable management. Furthermore, a guideway for the calibration sources has been realised. For the read-out electronics a new preamplifier box was built and tested.