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Bonn 2020 – scientific programme

The DPG Spring Meeting in Bonn had to be cancelled! Read more ...

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T: Fachverband Teilchenphysik

T 36: Neutrino physics without accelerators III

T 36.6: Talk

Tuesday, March 31, 2020, 18:15–18:30, L-2.004

Investigating the background of the GERDA experiment by 76Ge(n,p)76Ga reaction studies — •Marie Pichotta, Konrad Schmidt, Steffen Turkat, Birgit Zatschler, and Kai Zuber — TU Dresden IKTP, Dresden, Deutschland

The GERmanium Detector Array (GERDA) is located 1400 m underground in the Gran Sasso mountains (Italy) searching for the neutrinoless double beta decay of 76Ge. The discovery of this extremely rare process with an expected Q-value of 2039 keV would prove the Majorana character of neutrinos and consequently physics beyond Standard Model. For an explicit identification of a signal caused by the neutrinoless double beta decay a precise understanding of the background components is crucial.

Previous work indicates gamma rays from the decay of 76Ga in the region of interest (ROI) which can be produced by neutrons via (n,p)-reactions with 76Ge and therefore contribute to the background in the ROI. For the investigation of this potential background an enriched Ge-sample consisting of the same isotopic composition as the GERDA detectors will be activated by neutrons from a DT generator located at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR). Experimental procedure and preliminary works will be presented. This project is supported by BMBF (05A17OD1).

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