Frankfurt 2014 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 15: Astroteilchenphysik

HK 15.5: Talk

Monday, March 17, 2014, 18:15–18:30, HZ 9

Test of GERDA Phase II Detector Assembly — Tobias Bode¹, Konstantin Gusev¹, Bernhard Schwingenheuer², and •Victoria Wagner² for the GERDA collaboration — ¹Technische Universität München — ²Max-Planck Institut für Kernphysik, Heidelberg

The GERDA experiment searches for the lepton number violating neutrinoless double beta decay (0νββ) of ⁷⁶Ge. The experiment uses HPGe detectors enriched in ⁷⁶Ge as source and detection material. In GERDA Phase I five BEGe detectors were operated successfully. These detectors are distinguished for improved energy resolution and enhanced pulse shape discrimination (PSD) against background events. In Phase II additional 25 BEGe detectors will be installed. New electronics and radio-pure low-mass holders were specially designed for Phase II. Prior to the installation in GERDA all BEGe detectors are tested in their final assembly in the LNGS underground laboratory. This talk will present the mechanics and performance of the GERDA Phase II detector assembly.