The Gerda collaboration is performing a sensitive search for neutrinoless double beta decay of 76 Ge 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 kgyear). It will reach thereby a half-life sensitivity of more than 10 26 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.

Upgrade for Phase II of the Gerda experiment

Bettini, A.;D’Andrea, V.;Di Marco, N.;Macolino, C.;Pandola, L.;Salamida, F.;
2018

Abstract

The Gerda collaboration is performing a sensitive search for neutrinoless double beta decay of 76 Ge 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 kgyear). It will reach thereby a half-life sensitivity of more than 10 26 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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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11697/133628
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