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The success of current and future-generation neutrinoless double beta decay experiments relies on the ability to eliminate or reduce extraneous backgrounds. In addition to constructing experiments using radiopure materials and handling in…

Instrumentation and Detectors · Physics 2026-02-09 G. Othman , C. Wiseman , T. H. Burritt , J. A. Detwiler , M. P. Held , R. Henning , T. Mathew , D. Peterson , W. Pettus , G. Song , T. D. Van Wechel

GALATEA is a test facility designed to investigate bulk and surface effects in high purity germanium detectors. A vacuum tank houses an infrared screened volume with a cooled detector inside. A system of three stages allows an almost…

Instrumentation and Detectors · Physics 2015-12-09 I. Abt , A. Caldwell , B. Doenmez , L. Garbini , S. Irlbeck , B. Majorovits , M. Palermo , O. Schulz , H. Seitz , F. Stelzer

A new approach (called COBRA) for investigating double beta decay using CdTe (CdZnTe) semiconductor detectors is proposed. It follows the idea that source and detector are identical. This will allow simultaneous measurements of 5…

Nuclear Experiment · Physics 2009-11-07 K. Zuber

The HEIDELBERG-MOSCOW experiment, which is the most sensitive double beta decay experiment since ten years has been regularly continued until end of November 2003. An analysis of the data has been performed already until May 20, 2003. The…

High Energy Physics - Phenomenology · Physics 2009-09-29 H. V. Klapdor-Kleingrothaus , I. V. Krivosheina , A. Dietz , C. Tomei , O. Chkvoretz , H. Strecker

The \MJ\ Collaboration is operating an array of high purity Ge detectors to search for neutrinoless double-beta decay in $^{76}$Ge. The \MJ\ \DEM\ comprises 44.1~kg of Ge detectors (29.7 kg enriched in $^{76}$Ge) split between two modules…

Nuclear Experiment · Physics 2018-04-04 C. E. Aalseth , N. Abgrall , E. Aguayo , S. I. Alvis , M. Amman , I. J. Arnquist , F. T. Avignone , H. O. Back , A. S. Barabash , P. S. Barbeau , C. J. Barton , P. J. Barton , F. E. Bertrand , T. Bode , B. Bos , M. Boswell , R. L. Brodzinski , A. W. Bradley , V. Brudanin , M. Busch , M. Buuck , A. S. Caldwell , T. S. Caldwell , Y-D. Chan , C. D. Christofferson , P. -H. Chu , J. I. Collar , D. C. Combs , R. J. Cooper , C. Cuesta , J. A. Detwiler , P. J. Doe , J. A. Dunmore , Yu. Efremenko , H. Ejiri , S. R. Elliott , J. E. Fast , P. Finnerty , F. M. Fraenkle , Z. Fu , B. K. Fujikawa , E. Fuller , A. Galindo-Uribarri , V. M. Gehman , T. Gilliss , G. K. Giovanetti , J. Goett , M. P. Green , J. Gruszko , I. S. Guinn , V. E. Guiseppe , A. L. Hallin , C. R. Haufe , L. Hehn , R. Henning , E. W. Hoppe , T. W. Hossbach , M. A. Howe , B. R. Jasinski , R. A. Johnson , K. J. Keeter , J. D. Kephart , M. F. Kidd , A. Knecht , S. I. Konovalov , R. T. Kouzes , K. T. Lesko , B. D. LaFerriere , J. Leon , L. E. Leviner , J. C. Loach , A. M. Lopez , P. N. Luke , J. MacMullin , S. MacMullin , M. G. Marino , R. D. Martin , R. Massarczyk , A. B. McDonald , D. -M. Mei , S. J. Meijer , J. H. Merriman , S. Mertens , H. S. Miley , M. L. Miller , J. Myslik , J. L. Orrell , C. O'Shaughnessy , G. Othman , N. R. Overman , W. Pettus , D. G. Phillips , A. W. P. Poon , G. Perumpilly , K. Pushkin , D. C. Radford , J. Rager , J. H. Reeves , A. L. Reine , K. Rielage , R. G. H. Robertson , M. C. Ronquest , N. W. Ruof , A. G. Schubert , B. Shanks , M. Shirchenko , K. J. Snavely , N. Snyder , D. Steele , A. M. Suriano , D. Tedeschi , W. Tornow , J. E. Trimble , R. L. Varner , S. Vasilyev , K. Vetter , K. Vorren , B. R. White , J. F. Wilkerson , C. Wiseman , W. Xu , E. Yakushev , H. Yaver , A. R. Young , C. -H. Yu , V. Yumatov , I. Zhitnikov , B. X. Zhu , S. Zimmermann

This Letter of Intent has been submitted to the Scientific Committee of the INFN Laboratori Nazionali del Gran Sasso (LNGS) in March 2004. It describes a novel facility at the LNGS to study the double beta decay of 76Ge using an (optionally…

The MAJORANA Collaboration has completed construction and is now operating an array of high purity Ge detectors searching for neutrinoless double-beta decay ($0\nu\beta\beta$) in $^{76}$Ge. The array, known as the MAJORANA DEMONSTRATOR, is…

The first results of the GERDA double beta experiment in Gran Sasso were recently presented. They are fully consistent with the Heidelberg-Moscow experiment, but because of its low statistics cannot proof anything at this moment. It is no…

High Energy Physics - Experiment · Physics 2015-06-16 Hans Volker Klapdor-Kleingrothaus , Irina V. Krivosheina

A search for neutrinoless double-beta decay ($0\nu\beta\beta$) in $^{136}$Xe is performed with the full EXO-200 dataset using a deep neural network to discriminate between $0\nu\beta\beta$ and background events. Relative to previous…

The study of neutrinoless double beta decay has attracted much attention as it can provide valuable information about the mass and the nature of the neutrino. The double beta decay (DBD) itself is also of interest in nuclear physics. While…

Instrumentation and Detectors · Physics 2021-11-18 Swati Thakur , A. Mazumdar , R. Shah , V. Vatsa , V. Nanal , M. S. Pose , Pushpendra P. Singh , P. K. Raina , R. G. Pillay

Neutrinoless double-$\beta$ decay ($0\nu\beta\beta$ decay) is a hypothetical process that can occur if the neutrino is its own antiparticle. The COBRA collaboration operates a demonstrator to search for these decays at the Laboratori…

The analysis of the time profile of electrical signals produced by energy depositions in germanium detectors allows discrimination of events with different topologies. This is especially relevant for experiments searching for the…

High Energy Physics - Experiment · Physics 2023-03-23 Tommaso Comellato , Matteo Agostini , Stefan Schönert

Commercial argon contains cosmogenic $^{42}$Ar whose progeny $^{42}$K is a critical background component for the Large Enriched Germanium Experiment for Neutrinoless $\beta \beta$ Decay (LEGEND). LEGEND operates High-Purity Germanium (HPGe)…

The search for neutrinoless double beta decay ($0\nu\beta\beta$) is one of the key experiments for determining unresolved properties of neutrinos. Experimental observation of $0\nu\beta\beta$ would provide a clear demonstration of the…

High Energy Physics - Experiment · Physics 2020-04-07 Yong-Hamb Kim

The background in the region of the Q-value for neutrinoless double beta decay of 76Ge has been investigated by different methods: Simulation with GEANT 4 of the HEIDELBERG-MOSCOW experiment, analysis of other Ge double beta…

High Energy Physics - Phenomenology · Physics 2009-11-10 H. V. Klapdor-Kleingrothaus , A. Dietz , I. V. Krivosheina , C. Doerr , C. Tomei

At present, MAJORANA is a research and development (R&D) project to investigate the feasibility and cost of constructing and operating a one ton decay experiment with ~1000 kg of Ge detectors fabricated from germanium enriched to 86% in .…

Nuclear Experiment · Physics 2019-08-13 F. T. Avignone

Experiments searching for rare processes like neutrinoless double beta decay heavily rely on the identification of background events to reduce their background level and increase their sensitivity. We present a novel machine learning based…

Instrumentation and Detectors · Physics 2019-06-04 P. Holl , L. Hauertmann , B. Majorovits , O. Schulz , M. Schuster , A. J. Zsigmond

On the termination of the Heidelberg-Moscow double-beta decay of Germanium-76 experi-ment, the analysis of the obtained data is presented. The value of the half-life for two-neutrino double beta decay (2b2n mode) and limitation of the…

High Energy Physics - Experiment · Physics 2007-05-23 A. M. Bakalyarov , A. Ya. Balysh , S. T. Belyaev , V. I. Lebedev , S. V. Zhukov

The Neutrino Experiment with a Xenon TPC (NEXT) seeks to discover the neutrinoless double beta ($\beta\beta 0\nu$) decay of $^{136}$Xe using a high-pressure xenon gas time projection chamber with electroluminescent amplification. The…

Instrumentation and Detectors · Physics 2019-11-06 Justo Martín-Albo