Münster 2017 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 12: Neutrinophysik 2 (Doppelbetazerfall)
T 12.9: Vortrag
Montag, 27. März 2017, 18:50–19:05, VSH 118
Characterization of a new Ge detector type for future 0νββ search experiments — •Yoann Kermaidic for the GERDA collaboration — Max Planck Institue für Kernphysik
The search for a neutrinoless double decay (0νββ) is a very sensitive tool for probing whether neutrino are Dirac or Majorana particles. A potential discovery has far reaching consequences for particle physics and cosmology (leptogenesis).
76Ge based experiments, like Gerda, are leading in the field because of the superior energy resolution and the lowest background. A new collaboration has been founded with the goal to boost the half-life sensitivities by two orders of magnitude.
In this talk, I will show recent works on a new 76Ge detector type, called Small-Anode Germanium Well (SAGe) detector, manufactured by Canberra. Its working principle is similar to Broad Energy Germanium detectors used in Gerda but its unique geometry allows highly efficient particle interaction discrimination by pulse shape analysis with a detector mass that can be as high as 2.7 kg. Simulations are here compared to data. I will finally discuss the design and goals of the new 76Ge experiment.