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neutrinoless double beta decay,
76Ge, enriched germanium detectors
MPINP:
GERDA - Abteilung Hofmann
Abstract:
The GERmanium Detector Array (G
erda
) experiment has been built at the INFN National Gran Sasso Laboratory
(L
ngs
) for the search of neutrinoless double beta (0
νββ
) decay in
76
Ge. It is implementing a new shielding concept
by operating bare Ge diodes, enriched in
76
Ge, in high purity liquid argon supplemented by a water shield. Phase I
data taking of G
erda
has started in November 2011. This paper presents preliminary data showing the performance
achieved so far, and outlines the preparations for Phase II that aims at reducing backgrounds by another factor of ten.
