Bonn 2010 – scientific programme
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T: Fachverband Teilchenphysik
T 110: Niederenergie-Neutrinophysik und Suche nach dunkler Materie IV
T 110.5: Talk
Friday, March 19, 2010, 15:05–15:20, HG XI
Phase-I detector commissioning — •Marik Barnabé Heider1, Carla Cattadori2, Alessio D’Andragora2, Konstantin Gusev3, Bela Majorovits4, Stefan Schönert1, and Grzegorz Zuzel1 — 1Max-Planck-Institut für Kernphysik, Heidelberg, Germany — 2Laboratori Nazionali del Gran Sasso, Assergi (AQ), Italy — 3Joint Institute for Nuclear Research, Dubna, Russia — 4Max-Planck-Institut für Physik, München, Germany
The GERmanium Detector Array, GERDA, is designed to search for the neutrinoless double beta decay of 76Ge by using a novel approach of bare germanium detectors in liquid argon. The experiment is installed in Hall A of the National Gran Sasso Laboratory (LNGS) of the INFN. In GERDA Phase-I, reprocessed enriched-Ge detectors, which were previously operated by the Heidelberg-Moscow and IGEX collaborations, will be redeployed. Before operating the enriched detectors in the GERDA cryostat, the integration of the complete Phase-I signal chain was carried out in the Hall di Montagio of LNGS. An infrastructure was installed to simulate the GERDA experimental setup. The GERDA lock system which allows for insertion of strings with up to three detectors is integrated with a glove box system for detector handling. High purity germanium crystals with natural isotopic composition have been operated successfully using the Phase-I front-end charge sensitive amplifier. Operation, procedures, measurements and results of the Phase-I detector commissioning as well as the status of the detector operation in the GERDA cryostat will be summarized.