- Main
Upgrade for Phase II of the Gerda experiment
- GERDA Collaboration;
- Agostini, M;
- Bakalyarov, AM;
- Balata, M;
- Barabanov, I;
- Baudis, L;
- Bauer, C;
- Bellotti, E;
- Belogurov, S;
- Belyaev, ST;
- Benato, G;
- Bettini, A;
- Bezrukov, L;
- Bode, T;
- Borowicz, D;
- Brudanin, V;
- Brugnera, R;
- Caldwell, A;
- Cattadori, C;
- Chernogorov, A;
- D’Andrea, V;
- Demidova, EV;
- Di Marco, N;
- Domula, A;
- Doroshkevich, E;
- Egorov, V;
- Falkenstein, R;
- Frodyma, N;
- Gangapshev, A;
- Garfagnini, A;
- Grabmayr, P;
- Gurentsov, V;
- Gusev, K;
- Hakenmüller, J;
- Hegai, A;
- Heisel, M;
- Hemmer, S;
- Hiller, R;
- Hofmann, W;
- Hult, M;
- Inzhechik, LV;
- Ioannucci, L;
- Janicskó Csáthy, J;
- Jochum, J;
- Junker, M;
- Kazalov, V;
- Kermaïdic, Y;
- Kihm, T;
- Kirpichnikov, IV;
- Kirsch, A;
- Kish, A;
- Klimenko, A;
- Kneißl, R;
- Knöpfle, KT;
- Kochetov, O;
- Kornoukhov, VN;
- Kuzminov, VV;
- Laubenstein, M;
- Lazzaro, A;
- Lebedev, VI;
- Lehnert, B;
- Lindner, M;
- Lippi, I;
- Lubashevskiy, A;
- Lubsandorzhiev, B;
- Lutter, G;
- Macolino, C;
- Majorovits, B;
- Maneschg, W;
- Medinaceli, E;
- Miloradovic, M;
- Mingazheva, R;
- Misiaszek, M;
- Moseev, P;
- Nemchenok, I;
- Nisi, S;
- Panas, K;
- Pandola, L;
- Pelczar, K;
- Pullia, A;
- Ransom, C;
- Riboldi, S;
- Rumyantseva, N;
- Sada, C;
- Salamida, F;
- Salathe, M;
- Schmitt, C;
- Schneider, B;
- Schönert, S;
- Schreiner, J;
- Schütz, A-K;
- Schulz, O;
- Schwingenheuer, B;
- Selivanenko, O;
- Shevchik, E;
- Shirchenko, M;
- Simgen, H;
- Smolnikov, A;
- Stanco, L;
- Vanhoefer, L;
- Vasenko, AA;
- Veresnikova, A;
- von Sturm, K;
- Wagner, V;
- Wegmann, A;
- Wester, T;
- Wiesinger, C;
- Wojcik, M;
- Yanovich, E;
- Zhitnikov, I;
- Zhukov, SV;
- Zinatulina, D;
- Zsigmond, AJ;
- Zuber, K;
- Zuzel, G
Published Web Location
https://doi.org/10.1140/epjc/s10052-018-5812-2Abstract
The Gerda collaboration is performing a sensitive search for neutrinoless double beta decay of 76Ge 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.