期刊
EUROPEAN PHYSICAL JOURNAL C
卷 78, 期 5, 页码 -出版社
SPRINGER
DOI: 10.1140/epjc/s10052-018-5812-2
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资金
- German Federal Ministry for Education and Research (BMBF)
- German Research Foundation (DFG) via the Excellence Cluster Universe
- Italian Istituto Nazionale di Fisica Nucleare (INFN)
- Max Planck Society (MPG)
- Polish National Science Centre (NCN)
- Foundation for Polish Science [TEAM/2016-2/17]
- Russian Foundation for Basic Research (RFBR)
- Swiss National Science Foundation (SNF)
- European Union's Horizon research and innovation programme under the Marie Sklodowska-Curie grant [690575, 674896]
The Gerda collaboration is performing a sensitive search for neutrinoless double beta decay of Ge-76 at the INFN Laboratori Nazionali del Gran Sasso, Italy. The upgrade of the Gerda experiment from Phase I to Phase II has been concluded in December 2015. The first Phase II data release shows that the goal to suppress the background by one order of magnitude compared to Phase I has been achieved. Gerda is thus the first experiment that will remain background-free up to its design exposure (100 kg year). It will reach thereby a half-life sensitivity of more than 1026 year within 3 years of data collection. This paper describes in detail the modifications and improvements of the experimental setup for Phase II and discusses the performance of individual detector components.
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