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T: Fachverband Teilchenphysik

T 215: Niederenergetische Neutrinos I

T 215.4: Vortrag

Dienstag, 6. März 2007, 17:30–17:45, INF 306 SR 14

GERDA test facilities in Munich — •Manuela Jelen, Iris Abt, Allen Caldwell, Jing Liu, Kevin Kröninger, Daniel Lenz, Xiang Liu, Bela Majorovits, and Jens Schubert for the GERDA collaboration — Max-Planck-Institut für Physik, Föhringer Ring 6, 80805 München

The GERDA (Germanium Detector Array) experiment is designed to search for neutrinoless double-beta decay of ⁷⁶Ge. Germanium detectors enriched in ⁷⁶Ge will be submerged in pure liquid argon.
The cryogenic liquid is used as cooling liquid for the detectors and as shielding against gamma radiation.
Several test facilities are currently under construction at the MPI Munich. Prototype Germanium detectors are tested in conditions close to the experimental setup of GERDA. Detector parameters are determined in a specialized vacuum teststand as well as directly in liquid argon.
A new vacuum teststand named Galatea is under construction. It will be used to expose germanium detectors to α- and β-particles and study their response to surface events. This yields information about dead layers and the response to surface contaminations.