GERDA. Germanium Detector Array. Search for Neutrino-less ββ Decay of 76Ge

✍ Scribed by A. Bettini

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 271 KB
• Volume: 168
• Category: Article
• ISSN: 0920-5632
• DOI: 10.1016/j.nuclphysbps.2007.02.018

✦ Synopsis

The GERDA experiment, being assembled in the INFN Gran Sasso National Laboratory, will search for neutrino-less doublebeta decay of 76 Ge at a background level of 10 -3 kg -1 keV -1 yr -1 , two orders of magnitude lower than the best present value. In phase-I existing diodes used by the Heidelberg-Moscow and IGEX experiments will be immersed naked in hyperpure liquid Ar, for a sensitive mass of about 15 kg. In phase-II about 20 k of new, segmented, detectors will be added. In phase-I the Klapdor et al. evidence will be tested, in phase-II the degenerate mass region will be explored with an exposure of about 100 kg yr.