Upgrade for Phase II of the Gerda experiment

Agostini, M.; Bakalyarov, A.M.; Balata, M.; Barabanov, I.; Baudis, L.; Bauer, C.; Bellotti, E.; Belogurov, S.; Belyaev, S.T.; Benato, G.; Bettini, A.; Bezrukov, L.; Bode, T.; Borowicz, D.; Brudanin, V.; Brugnera, R.; Caldwell, A.; Cattadori, C.; Chernogorov, A.; D’Andrea, V.; Demidova, E.V.; 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, L.V.; Ioannucci, L.; Janicskó Csáthy, J.; Jochum, J.; Junker, M.; Kazalov, V.; Kermaïdic, Y.; Kihm, T.; Kirpichnikov, I.V.; Kirsch, A.; Kish, A.; Klimenko, A.; Kneißl, R.; Knöpfle, K.T.; Kochetov, O.; Kornoukhov, V.N.; Kuzminov, V.V.; Laubenstein, M.; Lazzaro, A.; Lebedev, V.I.; 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.-.; Schulz, O.; Schwingenheuer, B.; Selivanenko, O.; Shevchik, E.; Shirchenko, M.; Simgen, H.; Smolnikov, A.; Stanco, L.; Vanhoefer, L.; Vasenko, A.A.; Veresnikova, A.; von Sturm, K.; Wagner, V.; Wegmann, A.; Wester, T.; Wiesinger, C.; Wojcik, M.; Yanovich, E.; Zhitnikov, I.; Zhukov, S.V.; Zinatulina, D.; Zsigmond, A.J.; Zuber, K.; Zuzel, G.

doi:10.1140/epjc/s10052-018-5812-2

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.

Upgrade for Phase II of the Gerda experiment / M. Agostini, A.M. Bakalyarov, M. Balata, I. Barabanov, L. Baudis, C. Bauer, E. Bellotti, S. Belogurov, S.T. Belyaev, G. Benato, A. Bettini, L. Bezrukov, T. Bode, D. Borowicz, V. Brudanin, R. Brugnera, A. Caldwell, C. Cattadori, A. Chernogorov, V. D’Andrea, E.V. Demidova, N. Di Marco, A. Domula, E. Doroshkevich, V. Egorov, R. Falkenstein, N. Frodyma, A. Gangapshev, A. Garfagnini, P. Grabmayr, V. Gurentsov, K. Gusev, J. Hakenmüller, A. Hegai, M. Heisel, S. Hemmer, R. Hiller, W. Hofmann, M. Hult, L.V. Inzhechik, L. Ioannucci, J. Janicskó Csáthy, J. Jochum, M. Junker, V. Kazalov, Y. Kermaïdic, T. Kihm, I.V. Kirpichnikov, A. Kirsch, A. Kish, A. Klimenko, R. Kneißl, K.T. Knöpfle, O. Kochetov, V.N. Kornoukhov, V.V. Kuzminov, M. Laubenstein, A. Lazzaro, V.I. Lebedev, B. Lehnert, M. Lindner, I. Lippi, A. Lubashevskiy, B. Lubsandorzhiev, G. Lutter, C. Macolino, B. Majorovits, W. Maneschg, E. Medinaceli, M. Miloradovic, R. Mingazheva, M. Misiaszek, P. Moseev, I. Nemchenok, S. Nisi, K. Panas, L. Pandola, K. Pelczar, A. Pullia, C. Ransom, S. Riboldi, N. Rumyantseva, C. Sada, F. Salamida, M. Salathe, C. Schmitt, B. Schneider, S. Schönert, J. Schreiner, A.-. Schütz, O. Schulz, B. Schwingenheuer, O. Selivanenko, E. Shevchik, M. Shirchenko, H. Simgen, A. Smolnikov, L. Stanco, L. Vanhoefer, A.A. Vasenko, A. Veresnikova, K. von Sturm, V. Wagner, A. Wegmann, T. Wester, C. Wiesinger, M. Wojcik, E. Yanovich, I. Zhitnikov, S.V. Zhukov, D. Zinatulina, A.J. Zsigmond, K. Zuber, G. Zuzel. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 78:5(2018 Mar 18). [10.1140/epjc/s10052-018-5812-2]

Upgrade for Phase II of the Gerda experiment

Agostini, M.;Bakalyarov, A. M.;Balata, M.;Barabanov, I.;Baudis, L.;Bauer, C.;Bellotti, E.;Belogurov, S.;Belyaev, S. T.;Benato, G.;Bettini, A.;Bezrukov, L.;Bode, T.;Borowicz, D.;Brudanin, V.;Brugnera, R.;Caldwell, A.;Cattadori, C.;Chernogorov, A.;D’Andrea, V.;Demidova, E. V.;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, L. V.;Ioannucci, L.;Janicskó Csáthy, J.;Jochum, J.;Junker, M.;Kazalov, V.;Kermaïdic, Y.;Kihm, T.;Kirpichnikov, I. V.;Kirsch, A.;Kish, A.;Klimenko, A.;Kneißl, R.;Knöpfle, K. T.;Kochetov, O.;Kornoukhov, V. N.;Kuzminov, V. V.;Laubenstein, M.;A. Lazzaro;Lebedev, V. I.;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.;A. Pullia;Ransom, C.;S. Riboldi;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, A. A.;Veresnikova, A.;von Sturm, K.;Wagner, V.;Wegmann, A.;Wester, T.;Wiesinger, C.;Wojcik, M.;Yanovich, E.;Zhitnikov, I.;Zhukov, S. V.;Zinatulina, D.;Zsigmond, A. J.;Zuber, K.;Zuzel, G.

2018

Abstract

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.

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	Parole chiave
	
			Engineering (miscellaneous); Physics and Astronomy (miscellaneous)
		
	Settori scientifico-disciplinari dell'articolo
	
			Settore FIS/01 - Fisica Sperimentale
Settore FIS/05 - Astronomia e Astrofisica
		
	Data di pubblicazione
	
			18-mar-2018
		
	Rivista in ANCE
	
			THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS
		
	DOI
	
			https://dx.doi.org/10.1140/epjc/s10052-018-5812-2
		
	Tipologia
	
			Article (author)
		
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			01 - Articolo su periodico

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