Speaker
Mr
Alexander Bismark
(University of Zurich)
Description
The Astroparticle Physics Group at the University of Zurich operates a high-purity germanium (HPGe) spectrometer (Gator) in a low-background environment underground at the Laboratori Nazionali del Gran Sasso (LNGS) in Italy. The 2.2 kg $\gamma$-ray spectrometer is one of the world’s most sensitive HPGe detectors with an integrated count rate of (85.0 ± 0.9) events/(day kg) in the energy region 100–2700 keV. It is used to screen and select materials for rare-event search experiments such as XENON, DARWIN, GERDA and LEGEND. We describe the general facility, the recent upgrades and their impact on the background level. We also demonstrate its sensitivity by presenting the results for several material samples.
Primary author
Mr
Alexander Bismark
(University of Zurich)
Co-authors
Ms
Gabriela Rodrigues Araujo
(University of Zurich)
Prof.
Laura Baudis
(University of Zurich)
Dr
Michelle Galloway
(University of Zurich)
Ms
Yanina Biondi
(University of Zurich)
