Data acquisition and analysis of the 76Ge double beta experiment in Gran Sasso 
1990-2003

Klapdor-Kleingrothaus, H.V.; Dietz, A.; Krivosheina, I.; Chkvorets, O.

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Data acquisition and analysis of the ⁷⁶Ge double beta experiment in Gran Sasso 1990-2003

Klapdor-Kleingrothaus, H., Dietz, A., Krivosheina, I., & Chkvorets, O. (2004). Data acquisition and analysis of the ⁷⁶Ge double beta experiment in Gran Sasso 1990-2003. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 522(3), 371-406.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0011-8D2D-1 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0011-8D2E-0

Genre: Journal Article

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Creators:
Klapdor-Kleingrothaus, H.V.¹, Author
Dietz, A.¹, Author
Krivosheina, I.¹, Author
Chkvorets, O.², Author

Affiliations:
1Prof. Dirk Schwalm, Emeriti, MPI for Nuclear Physics, Max Planck Society, ou_907546
2Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society, ou_904549

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Abstract: Data acquisition in a long-running underground experiment has its specific experimental challenges, concerning data acquisition, stability of the experiment and background reduction. These problems are addressed here for the HEIDELBERG-MOSCOW experiment, which collected data in the period August 1990-May 2003. The measurement and the analysis of the data are presented. The duty cycle of the experiment was ~80%, and the collected statistics is 71.7 kg year. The background achieved in the energy region of the Q value for double beta decay is 0.11 events/kg year keV. The two-neutrino accompanied half-life is determined on the basis of more than 100 000 events. The confidence level for the neutrinoless signal has been improved to a 4 level.

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Language(s): eng - English

Dates: Date issued: 2004

Publication Status: Issued

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Rev. Type: Peer

Identifiers: eDoc: 206984

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Title: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Source Genre: Journal

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Pages: - Volume / Issue: 522 (3) Sequence Number: - Start / End Page: 371 - 406 Identifier: -