Calibration of the Gerda experiment

GERDA collaboration

doi:10.1140/epjc/s10052-021-09403-2

Calibration of the Gerda experiment

GERDA collaboration

Chair of Experimental Astroparticle Physics

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14 Scopus citations

Abstract

The GERmanium Detector Array (Gerda) collaboration searched for neutrinoless double-β decay in ⁷⁶Ge with an array of about 40 high-purity isotopically-enriched germanium detectors. The experimental signature of the decay is a monoenergetic signal at Q_β_β= 2039.061 (7) keV in the measured summed energy spectrum of the two emitted electrons. Both the energy reconstruction and resolution of the germanium detectors are crucial to separate a potential signal from various backgrounds, such as neutrino-accompanied double-β decays allowed by the Standard Model. The energy resolution and stability were determined and monitored as a function of time using data from regular ²²⁸Th calibrations. In this work, we describe the calibration process and associated data analysis of the full Gerda dataset, tailored to preserve the excellent resolution of the individual germanium detectors when combining data over several years.

Original language	English
Article number	682
Journal	European Physical Journal C
Volume	81
Issue number	8
DOIs	https://doi.org/10.1140/epjc/s10052-021-09403-2
State	Published - Aug 2021

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10.1140/epjc/s10052-021-09403-2

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@article{a75d604ef5b746f6a8ee9272328c523c,

title = "Calibration of the Gerda experiment",

abstract = "The GERmanium Detector Array (Gerda) collaboration searched for neutrinoless double-β decay in 76Ge with an array of about 40 high-purity isotopically-enriched germanium detectors. The experimental signature of the decay is a monoenergetic signal at Qββ= 2039.061 (7) keV in the measured summed energy spectrum of the two emitted electrons. Both the energy reconstruction and resolution of the germanium detectors are crucial to separate a potential signal from various backgrounds, such as neutrino-accompanied double-β decays allowed by the Standard Model. The energy resolution and stability were determined and monitored as a function of time using data from regular 228Th calibrations. In this work, we describe the calibration process and associated data analysis of the full Gerda dataset, tailored to preserve the excellent resolution of the individual germanium detectors when combining data over several years.",

author = "\{GERDA collaboration\} and M. Agostini and G. Araujo and Bakalyarov, \{A. M.\} and M. Balata and I. Barabanov and L. Baudis and C. Bauer and E. Bellotti and S. Belogurov and A. Bettini and L. Bezrukov and V. Biancacci and E. Bossio and V. Bothe and V. Brudanin and R. Brugnera and A. Caldwell and C. Cattadori and A. Chernogorov and T. Comellato and V. D{\textquoteright}Andrea and Demidova, \{E. V.\} and Marco, \{N. Di\} and E. Doroshkevich and F. Fischer and M. Fomina and A. Gangapshev and A. Garfagnini and C. Gooch and P. Grabmayr and V. Gurentsov and K. Gusev and J. Hakenm{\"u}ller and S. Hemmer and R. Hiller and W. Hofmann and J. Huang and M. Hult and Inzhechik, \{L. V.\} and Cs{\'a}thy, \{J. Janicsk{\'o}\} and J. Jochum and M. Junker and V. Kazalov and Y. Kerma{\"i}dic and H. Khushbakht and T. Kihm and Kirpichnikov, \{I. V.\} and A. Klimenko and R. Knei{\ss}l and S. Sch{\"o}nert",

note = "Publisher Copyright: {\textcopyright} 2021, The Author(s).",

year = "2021",

month = aug,

doi = "10.1140/epjc/s10052-021-09403-2",

language = "English",

volume = "81",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer Nature",

number = "8",

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TY - JOUR

T1 - Calibration of the Gerda experiment

AU - GERDA collaboration

AU - Agostini, M.

AU - Araujo, G.

AU - Bakalyarov, A. M.

AU - Balata, M.

AU - Barabanov, I.

AU - Baudis, L.

AU - Bauer, C.

AU - Bellotti, E.

AU - Belogurov, S.

AU - Bettini, A.

AU - Bezrukov, L.

AU - Biancacci, V.

AU - Bossio, E.

AU - Bothe, V.

AU - Brudanin, V.

AU - Brugnera, R.

AU - Caldwell, A.

AU - Cattadori, C.

AU - Chernogorov, A.

AU - Comellato, T.

AU - D’Andrea, V.

AU - Demidova, E. V.

AU - Marco, N. Di

AU - Doroshkevich, E.

AU - Fischer, F.

AU - Fomina, M.

AU - Gangapshev, A.

AU - Garfagnini, A.

AU - Gooch, C.

AU - Grabmayr, P.

AU - Gurentsov, V.

AU - Gusev, K.

AU - Hakenmüller, J.

AU - Hemmer, S.

AU - Hiller, R.

AU - Hofmann, W.

AU - Huang, J.

AU - Hult, M.

AU - Inzhechik, L. V.

AU - Csáthy, J. Janicskó

AU - Jochum, J.

AU - Junker, M.

AU - Kazalov, V.

AU - Kermaïdic, Y.

AU - Khushbakht, H.

AU - Kihm, T.

AU - Kirpichnikov, I. V.

AU - Klimenko, A.

AU - Kneißl, R.

AU - Schönert, S.

PY - 2021/8

Y1 - 2021/8

N2 - The GERmanium Detector Array (Gerda) collaboration searched for neutrinoless double-β decay in 76Ge with an array of about 40 high-purity isotopically-enriched germanium detectors. The experimental signature of the decay is a monoenergetic signal at Qββ= 2039.061 (7) keV in the measured summed energy spectrum of the two emitted electrons. Both the energy reconstruction and resolution of the germanium detectors are crucial to separate a potential signal from various backgrounds, such as neutrino-accompanied double-β decays allowed by the Standard Model. The energy resolution and stability were determined and monitored as a function of time using data from regular 228Th calibrations. In this work, we describe the calibration process and associated data analysis of the full Gerda dataset, tailored to preserve the excellent resolution of the individual germanium detectors when combining data over several years.

AB - The GERmanium Detector Array (Gerda) collaboration searched for neutrinoless double-β decay in 76Ge with an array of about 40 high-purity isotopically-enriched germanium detectors. The experimental signature of the decay is a monoenergetic signal at Qββ= 2039.061 (7) keV in the measured summed energy spectrum of the two emitted electrons. Both the energy reconstruction and resolution of the germanium detectors are crucial to separate a potential signal from various backgrounds, such as neutrino-accompanied double-β decays allowed by the Standard Model. The energy resolution and stability were determined and monitored as a function of time using data from regular 228Th calibrations. In this work, we describe the calibration process and associated data analysis of the full Gerda dataset, tailored to preserve the excellent resolution of the individual germanium detectors when combining data over several years.

UR - https://www.scopus.com/pages/publications/85112653477

U2 - 10.1140/epjc/s10052-021-09403-2

DO - 10.1140/epjc/s10052-021-09403-2

M3 - Article

AN - SCOPUS:85112653477

SN - 1434-6044

VL - 81

JO - European Physical Journal C

JF - European Physical Journal C

IS - 8

M1 - 682

ER -

Calibration of the Gerda experiment

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