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17 17

Status of the MAJORANA DEMONSTRATOR

Jun 28, 2018 06/18

by C. Cuesta; N. Abgrall; I. J. Arnquist; F. T. Avignone; C. X. Baldenegro-Barrera; A. S. Barabash; F. E. Bertrand; A. W. Bradley; V. Brudanin; M. Busch; M. Buuck; D. Byram; A. S. Caldwell; Y-D. Chan; C. D. Christofferson; P. -H. Chu; J. A. Detwiler; Yu. Efremenko; H. Ejiri; S. R. Elliott; A. Galindo-Uribarri; T. Gilliss; G. K. Giovanetti; J. Goett; M. P. Green; J. Gruszko; I. S. Guinn; V. E. Guiseppe; R. Henning; E. W. Hoppe; S. Howard; M. A. Howe; B. R. Jasinski; K. J. Keeter; M. F. Kidd; S. I....

eye 17

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The MAJORANA Collaboration is constructing the MAJORANA DEMONSTRATOR, an ultra-low background, modular, HPGe detector array with a mass of 44-kg (29 kg 76Ge and 15 kg natGe) to search for neutrinoless double beta decay in Ge-76. The next generation of tonne-scale Ge-based neutrinoless double beta decay searches will probe the neutrino mass scale in the inverted-hierarchy region. The MAJORANA DEMONSTRATOR is envisioned to demonstrate a path forward to achieve a background rate at or below 1...
Topics: Instrumentation and Detectors, Physics, Nuclear Experiment
Source: http://arxiv.org/abs/1507.07612

Arxiv.org

17 17

Analysis techniques for background rejection at the MAJORANA DEMONSTRATOR

Jun 27, 2018 06/18

by C. Cuesta; N. Abgrall; I. J. Arnquist; F. T. Avignone; C. X. Baldenegro-Barrera; A. S. Barabash; F. E. Bertrand; A. W. Bradley; V. Brudanin; M. Busch; M. Buuck; D. Byram; A. S. Caldwell; Y-D. Chan; C. D. Christofferson; J. A. Detwiler; Yu. Efremenko; H. Ejiri; S. R. Elliott; A. Galindo-Uribarri; T. Gilliss; G. K. Giovanetti; J. Goett; M. P. Green; J. Gruszko; I. S. Guinn; V. E. Guiseppe; R. Henning; E. W. Hoppe; S. Howard; M. A. Howe; B. R. Jasinski; K. J. Keeter; M. F. Kidd; S. I. Konovalov;...

eye 17

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The MAJORANA Collaboration is constructing the MAJORANA DEMONSTRATOR, an ultra-low background, 40-kg modular HPGe detector array to search for neutrinoless double beta decay in 76Ge. In view of the next generation of tonne-scale Ge-based 0nbb-decay searches that will probe the neutrino mass scale in the inverted-hierarchy region, a major goal of the MAJORANA DEMONSTRATOR is to demonstrate a path forward to achieving a background rate at or below 1 count/tonne/year in the 4 keV region of...
Topics: Instrumentation and Detectors, Physics
Source: http://arxiv.org/abs/1506.03202

Arxiv.org

6 6.0

Search for Pauli Exclusion Principle Violating Atomic Transitions and Electron Decay with a P-type Point Contact Germanium Detector

Jun 29, 2018 06/18

by N. Abgrall; I. J. Arnquist; F. T. Avignone; A. S. Barabash; F. E. Bertrand; A. W. Bradley; V. Brudanin; M. Busch; M. Buuck; A. S. Caldwell; Y-D. Chan; C. D. Christofferson; P. -H. Chu; C. Cuesta; J. A. Detwiler; C. Dunagan; Yu. Efremenko; H. Ejiri; S. R. Elliott; P. S Finnerty; A. Galindo-Uribarri; T. Gilliss; G. K. Giovanetti; J. Goett; M. P. Green; J. Gruszko; I. S. Guinn; V. E. Guiseppe; R. Henning; E. W. Hoppe; S. Howard; M. A. Howe; B. R. Jasinski; K. J. Keeter; M. F. Kidd; S. I....

eye 6

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A search for Pauli-exclusion-principle-violating K-alpha electron transitions was performed using 89.5 kg-d of data collected with a p-type point contact high-purity germanium detector operated at the Kimballton Underground Research Facility. A lower limit on the transition lifetime of 5.8x10^30 seconds at 90% C.L. was set by looking for a peak at 10.6 keV resulting from the x-ray and Auger electrons present following the transition. A similar analysis was done to look for the decay of atomic...
Topics: Nuclear Experiment, Physics, Instrumentation and Detectors
Source: http://arxiv.org/abs/1610.06141

Arxiv.org

7 7.0

A Dark Matter Search with MALBEK

Jun 30, 2018 06/18

by G. K. Giovanetti; N. Abgrall; E. Aguayo; F. T. Avignone; A. S. Barabash; F. E. Bertrand; M. Boswell; V. Brudanin; M. Busch; D. Byram; A. S. Caldwell; Y-D. Chan; C. D. Christofferson; D. C. Combs; C. Cuesta; J. A. Detwiler; P. J. Doe; Yu. Efremenko; V. Egorov; H. Ejiri; S. R. Elliott; J. E. Fast; P. Finnerty; F. M. Fraenkle; A. Galindo-Uribarri; J. Goett; M. P. Green; J. Gruszko; V. E. Guiseppe; K. Gusev; A. L. Hallin; R. Hazama; A. Hegai; R. Henning; E. W. Hoppe; S. Howard; M. A. Howe; K. J....

eye 7

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The MAJORANA DEMONSTRATOR is an array of natural and enriched high purity germanium detectors that will search for the neutrinoless double-beta decay of 76-Ge and perform a search for weakly interacting massive particles (WIMPs) with masses below 10 GeV. As part of the MAJORANA research and development efforts, we have deployed a modified, low-background broad energy germanium detector at the Kimballton Underground Research Facility. With its sub-keV energy threshold, this detector is sensitive...
Topics: Instrumentation and Detectors, Physics, Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1407.2238

Arxiv.org

21 21

Low Background Signal Readout Electronics for the MAJORANA DEMONSTRATOR

Jun 26, 2018 06/18

by I. Guinn; N. Abgrall; F. T. Avignone; A. S. Barabash; F. E. Bertrand; V. Brudanin; M. Busch; M. Buuck; D. Byram; A. S. Caldwell; Y-D. Chan; C. D. Christofferson; C. Cuesta; J. A. Detwiler; Yu. Efremenko; H. Ejiri; S. R. Elliott; A. Galindo-Uribarri; G. K. Giovanetti; J. Goett; M. P. Green; J. Gruszko; V. E. Guiseppe; R. Henning; E. W. Hoppe; S. Howard; M. A. Howe; B. R. Jasinski; K. J. Keeter; M. F. Kidd; S. I. Konovalov; R. T. Kouzes; B. D. LaFerriere; J. Leon; J. MacMullin; R. D. Martin; S....

eye 21

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The MAJORANA DEMONSTRATOR is a planned 40 kg array of Germanium detectors intended to demonstrate the feasibility of constructing a tonne-scale experiment that will seek neutrinoless double beta decay ($0\nu\beta\beta$) in $^{76}\mathrm{Ge}$. Such an experiment would require backgrounds of less than 1 count/tonne-year in the 4 keV region of interest around the 2039 keV Q-value of the $\beta\beta$ decay. Designing low-noise electronics, which must be placed in close proximity to the detectors,...
Topics: Nuclear Experiment, Physics, Instrumentation and Detectors
Source: http://arxiv.org/abs/1502.03174

Arxiv.org

10 10.0

Delayed charge recovery discrimination of passivated surface alpha events in P-type point-contact detectors

Jun 29, 2018 06/18

by J. Gruszko; N. Abgrall; I. J. Arnquist; F. T. Avignone; A. S. Barabash; F. E. Bertrand; A. W. Bradley; V. Brudanin; M. Busch; M. Buuck; T. S. Caldwell; Y-D. Chan; C. D. Christofferson; P. H. Chu; C. Cuesta; J. A. Detwiler; C. Dunagan; Yu. Efremenko; H. Ejiri; S. R. Elliott; A. Fullmer; A. Galindo-Uribarri; T. Gilliss; G. K. Giovanetti; M. P. Green; I. S. Guinn; V. E. Guiseppe; R. Henning; E. W. Hoppe; M. A. Howe; B. R. Jasinski; K. J. Keeter; M. F. Kidd; S. I. Konovalov; R. T. Kouzes; J. Leon;...

eye 10

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The Majorana Demonstrator searches for neutrinoless double-beta decay of $^{76}$Ge using arrays of high-purity germanium detectors. If observed, this process would demonstrate that lepton number is not a conserved quantity in nature, with implications for grand-unification and for explaining the predominance of matter over antimatter in the universe. A problematic background in such large granular detector arrays is posed by alpha particles. In the Majorana Demonstrator, events have been...
Topics: Nuclear Experiment, Physics, Instrumentation and Detectors
Source: http://arxiv.org/abs/1610.03054

Arxiv.org

4 4.0

The Majorana Demonstrator Radioassay Program

Jun 29, 2018 06/18

by N. Abgrall; I. J. Arnquist; F. T. Avignone; H. O. Back; A. S. Barabash; F. E. Bertrand; M. Boswell; A. W. Bradley; V. Brudanin; M. Busch; M. Buuck; D. Byram; A. S. Caldwell; Y-D. Chan; C. D. Christofferson; P. -H. Chu; C. Cuesta; J. A. Detwiler; J. A. Dunmore; Yu. Efremenko; H. Ejiri; S. R. Elliott; P. Finnerty; A. Galindo-Uribarri; V. M. Gehman; T. Gilliss; G. K. Giovanetti; J. Goett; M. P. Green; J. Gruszko; I. S. Guinn; V. E. Guiseppe; R. Henning; E. W. Hoppe; S. Howard; M. A. Howe; B. R....

eye 4

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The MAJORANA collaboration is constructing the MAJORANA DEMONSTATOR at the Sanford Underground Research Facility at the Homestake gold mine, in Lead, SD. The apparatus will use Ge detectors, enriched in isotope \nuc{76}{Ge}, to demonstrate the feasibility of a large-scale Ge detector experiment to search for neutrinoless double beta decay. The long half-life of this postulated process requires that the apparatus be extremely low in radioactive isotopes whose decays may produce backgrounds to...
Topics: High Energy Physics - Experiment, Nuclear Experiment, Physics, Instrumentation and Detectors
Source: http://arxiv.org/abs/1601.03779

Arxiv.org

25 25

The Majorana Parts Tracking Database

Jun 26, 2018 06/18

by The Majorana Collaboration; N. Abgrall; E. Aguayo; F. T. Avignone; A. S. Barabash; F. E. Bertrand; V. Brudanin; M. Busch; D. Byram; A. S. Caldwell; Y-D. Chan; C. D. Christofferson; D. C. Combs; C. Cuesta; J. A. Detwiler; P. J. Doe; Yu. Efremenko; V. Egorov; H. Ejiri; S. R. Elliott; J. Esterline; J. E. Fast; P. Finnerty; F. M. Fraenkle; A. Galindo-Uribarri; G. K. Giovanetti; J. Goett; M. P. Green; J. Gruszko; V. E. Guiseppe; K. Gusev; A. L. Hallin; R. Hazama; A. Hegai; R. Henning; E. W. Hoppe;...

eye 25

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The Majorana Demonstrator is an ultra-low background physics experiment searching for the neutrinoless double beta decay of $^{76}$Ge. The Majorana Parts Tracking Database is used to record the history of components used in the construction of the Demonstrator. The tracking implementation takes a novel approach based on the schema-free database technology CouchDB. Transportation, storage, and processes undergone by parts such as machining or cleaning are linked to part records. Tracking parts...
Topics: Nuclear Experiment, Physics, Instrumentation and Detectors
Source: http://arxiv.org/abs/1502.01748

Arxiv.org

5 5.0

The Majorana Demonstrator calibration system

Jun 30, 2018 06/18

by N. Abgrall; I. J. Arnquist; F. T. Avignone; A. S. Barabash; F. E. Bertrand; M. Boswell; A. W. Bradley; V. Brudanin; M. Busch; M. Buuck; T. S. Caldwell; C. D. Christofferson; P. -H. Chu; C. Cuesta; J. A. Detwiler; C. Dunagan; Yu. Efremenko; H. Ejiri; S. R. Elliott; Z. Fu; V. M. Gehman; T. Gilliss; G. K. Giovanetti; J. Goett; M. P. Green; J. Gruszko; I. S. Guinn; V. E. Guiseppe; C. R. Haufe; R. Henning; E. W. Hoppe; M. A. Howe; B. R. Jasinski; K. J. Keeter; M. F. Kidd; S. I. Konovalov; R. T....

eye 5

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The MAJORANA Collaboration is searching for the neutrinoless double-beta decay of the nucleus $^{76}$Ge. The MAJORANA DEMONSTRATOR is an array of germanium detectors deployed with the aim of implementing background reduction techniques suitable for a 1-tonne $^{76}$Ge-based search. The ultra low-background conditions require regular calibrations to verify proper function of the detectors. Radioactive line sources can be deployed around the cryostats containing the detectors for regular energy...
Topics: Physics, Nuclear Experiment, Instrumentation and Detectors
Source: http://arxiv.org/abs/1702.02466

Arxiv.org

26 26

The Intermediate Neutrino Program

Jun 27, 2018 06/18

by C. Adams; J. R. Alonso; A. M. Ankowski; J. A. Asaadi; J. Ashenfelter; S. N. Axani; K. Babu; C. Backhouse; H. R. Band; P. S. Barbeau; N. Barros; M. Lokajicek; W. C. Louis; K. Luk; J. Lykken; W. J. Marciano; J. Maricic; D. M. Markoff; D. A. Martinez Caicedo; C. Mauger; K. Mavrokoridis; A. Bernstein; E. McCluskey; D. McKeen; R. McKeown; G. Mills; I. Mocioiu; B. Monreal; M. R. Mooney; J. G. Morfin; P. Mumm; J. Napolitano; M. Betancourt; R. Neilson; J. K. Nelson; M. Nessi; D. Norcini; F. Nova; D. R....

eye 26

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The US neutrino community gathered at the Workshop on the Intermediate Neutrino Program (WINP) at Brookhaven National Laboratory February 4-6, 2015 to explore opportunities in neutrino physics over the next five to ten years. Scientists from particle, astroparticle and nuclear physics participated in the workshop. The workshop examined promising opportunities for neutrino physics in the intermediate term, including possible new small to mid-scale experiments, US contributions to large...
Topics: Instrumentation and Detectors, High Energy Physics - Experiment, Nuclear Experiment, Physics
Source: http://arxiv.org/abs/1503.06637

Arxiv.org

7 7.0

New limits on Bosonic Dark Matter, Solar Axions, Pauli Exclusion Principle Violation, and Electron Decay from the Majorana Demonstrator

Jun 29, 2018 06/18

by N. Abgrall; I. J. Arnquist; F. T. Avignone; A. S. Barabash; F. E. Bertrand; A. W. Bradley; V. Brudanin; M. Busch; M. Buuck; T. S. Caldwell; Y-D. Chan; C. D. Christofferson; P. -H. Chu; C. Cuesta; J. A. Detwiler; C. Dunagan; Yu. Efremenko; H. Ejiri; S. R. Elliott; T. Gilliss; G. K. Giovanetti; J. Goett; M. P. Green; J. Gruszko; I. S. Guinn; V. E. Guiseppe; C. R. S. Haufe; R. Henning; E. W. Hoppe; S. Howard; M. A. Howe; B. R. Jasinski; K. J. Keeter; M. F. Kidd; S. I. Konovalov; R. T. Kouzes; A....

eye 7

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We present new limits on exotic keV-scale physics based on 478 kg d of MAJORANA DEMONSTRATOR commissioning data. Constraints at the 90% confidence level are derived on bosonic dark matter (DM) and solar axion couplings, Pauli exclusion principle violating (PEPV) decay, and electron decay using monoenergetic peak signal-limits above our background. Our most stringent DM constraints are set for 11.8 keV mass particles, limiting $g_{Ae}
Topics: Nuclear Experiment, Physics, Instrumentation and Detectors
Source: http://arxiv.org/abs/1612.00886

Arxiv.org

25 25

Low Background Signal Readout Electronics for the MAJORANA DEMONSTRATOR

Jun 28, 2018 06/18

by I. Guinn; N. Abgrall; I. J. Arnquist; F. T. Avignone; C. X. Baldenegro-Barrera; A. S. Barabash; F. E. Bertrand; A. W. Bradley; V. Brudanin; M. Busch; M. Buuck; D. Byram; A. S. Caldwell; Y-D. Chan; C. D. Christofferson; C. Cuesta; J. A. Detwiler; Yu. Efremenko; H. Ejiri; S. R. Elliott; A. Galindo-Uribarri; T. Gilliss; G. K. Giovanetti; J. Goett; M. P. Green; J. Gruszko; V. E. Guiseppe; R. Henning; E. W. Hoppe; S. Howard; M. A. Howe; B. R. Jasinski; K. J. Keeter; M. F. Kidd; S. I. Konovalov; R....

eye 25

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The MAJORANA Collaboration will seek neutrinoless double beta decay (0nbb) in 76Ge using isotopically enriched p-type point contact (PPC) high purity Germanium (HPGe) detectors. A tonne-scale array of HPGe detectors would require background levels below 1 count/ROI-tonne-year in the 4 keV region of interest (ROI) around the 2039 keV Q-value of the decay. In order to demonstrate the feasibility of such an experiment, the MAJORANA DEMONSTRATOR, a 40 kg HPGe detector array, is being constructed...
Topics: Instrumentation and Detectors, Physics, Nuclear Experiment
Source: http://arxiv.org/abs/1506.04279

Arxiv.org

5 5.0

Initial Results from the MAJORANA DEMONSTRATOR

Jun 29, 2018 06/18

by S. R. Elliott; N. Abgrall; I. J. Arnquist; F. T. Avignone; A. S. Barabash; F. E. Bertrand; A. W. Bradley; V. Brudanin; M. Busch; M. Buuck; T. S. Caldwell; Y-D. Chan; C. D. Christofferson; P. -H. Chu; C. Cuesta; J. A. Detwiler; C. Dunagan; Yu. Efremenko; H. Ejiri; A. Fullmer; A. Galindo-Uribarri; T. Gilliss; G. K. Giovanetti; M. P. Green; J. Gruszko; I. S. Guinn; V. E. Guiseppe; R. Henning; E. W. Hoppe; M. A. Howe; B. R. Jasinski; K. J. Keeter; M. F. Kidd; S. I. Konovalov; R. T. Kouzes; J. Leon;...

eye 5

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Neutrinoless double-beta decay searches seek to determine the nature of neutrinos, the existence of a lepton violating process, and the effective Majorana neutrino mass. The {\sc Majorana} Collaboration is assembling an array of high purity Ge detectors to search for neutrinoless double-beta decay in $^{76}$Ge. The {\sc Majorana Demonstrator} is composed of 44.8~kg (29.7 kg enriched in $^{76}$Ge) of Ge detectors in total, split between two modules contained in a low background shield at the...
Topics: Instrumentation and Detectors, Nuclear Experiment, Physics, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1610.01210

Arxiv.org

13 13

MAJORANA Collaboration's Experience with Germanium Detectors

Jun 26, 2018 06/18

by S. Mertens; N. Abgrall; F. T. Avignone; A. S. Barabash; F. E. Bertrand; V. Brudanin; M. Busch; M. Buuck; D. Byram; A. S. Caldwell; Y-D. Chan; C. D. Christofferson; C. Cuesta; J. A. Detwiler; Yu. Efremenko; H. Ejiri; S. R. Elliott; A. Galindo-Uribarri; G. K. Giovanetti; J. Goett; M. P. Green; J. Gruszko; I. Guinn; V. E. Guiseppe; R. Henning; E. W. Hoppe; S. Howard; M. A. Howe; B. R. Jasinski; K. J. Keeter; M. F. Kidd; S. I. Konovalov; R. T. Kouzes; B. D. LaFerriere; J. Leon; J. MacMullin; R. D....

eye 13

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The goal of the \textsc{Majorana} \textsc{Demonstrator} project is to search for 0$\nu\beta\beta$ decay in $^{76}\mathrm{Ge}$. Of all candidate isotopes for 0$\nu\beta\beta$, $^{76}\mathrm{Ge}$ has some of the most favorable characteristics. Germanium detectors are a well established technology, and in searches for 0$\nu\beta\beta$, the high purity germanium crystal acts simultaneously as source and detector. Furthermore, p-type germanium detectors provide excellent energy resolution and a...
Topics: Nuclear Experiment, Physics, Instrumentation and Detectors
Source: http://arxiv.org/abs/1502.01742

Arxiv.org

5 5.0

Testing the Ge detectors for the MAJORANA DEMONSTRATOR

Jun 30, 2018 06/18

by W. Xu; N. Abgrall; E. Aguayo; F. T. Avignone; A. S. Barabash; F. E. Bertrand; M. Boswell; V. Brudanin; M. Busch; D. Byram; A. S. Caldwell; Y-D. Chan; C. D. Christofferson; D. C. Combs; C. Cuesta; J. A. Detwiler; P. J. Doe; Yu. Efremenko; V. Egorov; H. Ejiri; S. R. Elliott; J. E. Fast; P. Finnerty; F. M. Fraenkle; A. Galindo-Uribarri; G. K. Giovanetti; J. Goett; M. P. Green; J. Gruszko; V. E. Guiseppe; K. Gusev; A. L. Hallin; R. Hazama; A. Hegai; R. Henning; E. W. Hoppe; S. Howard; M. A. Howe;...

eye 5

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High purity germanium (HPGe) crystals will be used for the MAJORANA DEMONSTRATOR, where they serve as both the source and the detector for neutrinoless double beta decay. It is crucial for the experiment to understand the performance of the HPGe crystals. A variety of crystal properties are being investigated, including basic properties such as energy resolution, efficiency, uniformity, capacitance, leakage current and crystal axis orientation, as well as more sophisticated properties, e.g....
Topics: Physics, Nuclear Experiment, Instrumentation and Detectors
Source: http://arxiv.org/abs/1404.7399

Arxiv.org

3 3.0

Background Model for the Majorana Demonstrator

Jun 30, 2018 06/18

by C. Cuesta; N. Abgrall; E. Aguayo; F. T. Avignone; A. S. Barabash; F. E. Bertrand; M. Boswell; V. Brudanin; M. Busch; D. Byram; A. S. Caldwell; Y-D. Chan; C. D. Christofferson; D. C. Combs; J. A. Detwiler; P. J. Doe; Yu. Efremenko; V. Egorov; H. Ejiri; S. R. Elliott; J. E. Fast; P. Finnerty; F. M. Fraenkle; A. Galindo-Uribarri; G. K. Giovanetti; J. Goett; M. P. Green; J. Gruszko; V. E. Guiseppe; K. Gusev; A. L. Hallin; R. Hazama; A. Hegai; R. Henning; E. W. Hoppe; S. Howard; M. A. Howe; K. J....

eye 3

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The Majorana Collaboration is constructing a system containing 40 kg of HPGe detectors to demonstrate the feasibility and potential of a future tonne-scale experiment capable of probing the neutrino mass scale in the inverted-hierarchy region. To realize this, a major goal of the Majorana Demonstrator is to demonstrate a path forward to achieving a background rate at or below 1 cnt/(ROI-t-y) in the 4 keV region of interest around the Q-value at 2039 keV. This goal is pursued through a...
Topics: Physics, Nuclear Experiment, Instrumentation and Detectors
Source: http://arxiv.org/abs/1405.1370

Arxiv.org

6 6.0

Status of the MAJORANA Demonstrator

Jun 30, 2018 06/18

by C. Cuesta; N. Abgrall; I. J. Arnquist; F. T. Avignone; A. S. Barabash; F. E. Bertrand; V. Brudanin; M. Busch; M. Buuck; D. Byram; A. S. Caldwell; Y-D. Chan; C. D. Christofferson; J. A. Detwiler; Yu. Efremenko; H. Ejiri; S. R. Elliott; A. Galindo-Uribarri; G. K. Giovanetti; J. Goett; M. P. Greenn; J. Gruszko; I. S. Guinn; V. E. Guiseppe; R. Henning; E. W. Hoppe; S. Howard; M. A. Howe; B. R. Jasinski; K. J. Keeter; M. F. Kidd; S. I. Konovalov; R. T. Kouzes; B. D. LaFerriere; J. Leon; J....

eye 6

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The MAJORANA Collaboration is constructing the MAJORANA Demonstrator, an ultra-low background, 40-kg modular high purity Ge detector array to search for neutrinoless double-beta decay in Ge. In view of the next generation of tonne-scale Ge-based neutrinoless double-beta decay searches that will probe the neutrino mass scale in the inverted-hierarchy region, a major goal of the Demonstrator is to demonstrate a path forward to achieving a background rate at or below 1 count/tonne/year in the 4...
Topics: Physics, Nuclear Experiment, Instrumentation and Detectors
Source: http://arxiv.org/abs/1412.5682

Arxiv.org

3 3.0

The Majorana Demonstrator search for neutrinoless double beta decay

Jun 29, 2018 06/18

by C. Cuesta; M. Buuck; J. A. Detwiler; J. Gruszko; I. S. Guinn; J. Leon; R. G. H. Robertson; N. Abgrall; A. W. Bradley; Y-D. Chan; S. Mertens; A. W. P. Poon; K. Vetter; I. J. Arnquist; E. W. Hoppe; R. T. Kouzes; J. L. Orrell; F. T. Avignone; A. S. Barabash; S. I. Konovalov; V. Yumatov; F. E. Bertrand; A. Galindo-Uribarri; D. C. Radford; R. L. Varner; C. -H. Yu; V. Brudanin; M. Shirchenko; S. Vasilyev; E. Yakushev; I. Zhitnikov; M. Busch; T. S. Caldwell; T. Gilliss; R. Henning; M. A. Howe; J....

eye 3

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The MAJORANA Collaboration is constructing the MAJORANA DEMONSTRATOR, an ultra-low background, modular, HPGe detector array with a mass of 44.8-kg (29.7 kg enriched >88% in Ge-76) to search for neutrinoless double beta decay in Ge-76. The next generation of tonnescale Ge-based neutrinoless double beta decay searches will probe the neutrino mass scale in the inverted-hierarchy region. The MAJORANA DEMONSTRATOR is envisioned to demonstrate a path forward to achieve a background rate at or...
Topics: Nuclear Experiment, Physics, Instrumentation and Detectors
Source: http://arxiv.org/abs/1608.07340

Arxiv.org

3 3.0

Background model for the MAJORANA DEMONSTRATOR

Jun 29, 2018 06/18

by C. Cuesta; N. Abgrall; I. J. Arnquist; F. T. Avignone; A. S. Barabash; F. E. Bertrand; A. W. Bradley; V. Brudanin; M. Busch; M. Buuck; T. S. Caldwell; Y-D. Chan; C. D. Christofferson; P. -H. Chu; J. A. Detwiler; C. Dunagan; Yu. Efremenko; H. Ejiri; S. R. Elliott; A. Fullmer; A. Galindo-Uribarri; T. Gilliss; G. K. Giovanetti; M. P. Green; J. Gruszko; I. S. Guinn; V. E. Guiseppe; R. Henning; E. W. Hoppe; M. A. Howe; B. R. Jasinski; K. J. Keeter; M. F. Kidd; S. I. Konovalov; R. T. Kouzes; J. Leon;...

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The MAJORANA Collaboration is constructing a system containing 44 kg of high-purity Ge (HPGe) detectors to demonstrate the feasibility and potential of a future tonne-scale experiment capable of probing the neutrino mass scale to ~15 meV. To realize this, a major goal of the MAJORANA DEMONSTRATOR is to demonstrate a path forward to achieving a background rate at or below 1 count/(ROI-t-y) in the 4 keV region of interest (ROI) around the Q-value at 2039 keV. This goal is pursued through a...
Topics: Nuclear Experiment, Physics, Instrumentation and Detectors
Source: http://arxiv.org/abs/1610.01146

Arxiv.org

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The Majorana Demonstrator: A Search for Neutrinoless Double-beta Decay of 76Ge

Jun 26, 2018 06/18

by Majorana Collaboration; W. Xu; N. Abgrall; F. T. Avignone; A. S. Barabash; F. E. Bertrand; V. Brudanin; M. Busch; M. Buuck; D. Byram; A. S. Caldwell; Y-D. Chan; C. D. Christofferson; C. Cuesta; J. A. Detwiler; Yu. Efremenko; H. Ejiri; S. R. Elliott; A. Galindo-Uribarri; G. K. Giovanetti; J. Goett; M. P. Green; J. Gruszko; I. Guinn; V. E. Guiseppe; R. Henning; E. W. Hoppe; S. Howard; M. A. Howe; B. R. Jasinski; K. J. Keeter; M. F. Kidd; S. I. Konovalov; R. T. Kouzes; B. D. LaFerriere; J. Leon;...

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Neutrinoless double-beta decay is a hypothesized process where in some even-even nuclei it might be possible for two neutrons to simultaneously decay into two protons and two electrons without emitting neutrinos. This is possible only if neutrinos are Majorana particles, i.e. fermions that are their own antiparticles. Neutrinos being Majorana particles would explicitly violate lepton number conservation, and might play a role in the matter-antimatter asymmetry in the universe. The observation...
Topics: Nuclear Experiment, Physics, Instrumentation and Detectors
Source: http://arxiv.org/abs/1501.03089

Arxiv.org

9 9.0

High voltage testing for the MAJORANA Demonstrator

Jun 29, 2018 06/18

by N. Abgrall; I. J. Arnquist; F. T. Avignone; A. S. Barabash; F. E. Bertrand; A. W. Bradley; V. Brudanin; M. Busch; M. Buuck; D. Byram; A. S. Caldwell; Y-D. Chan; C. D. Christofferson; P. -H. Chu; C. Cuesta; J. A. Detwiler; P. J. Doe; C. Dunagan; Yu. Efremenko; H. Ejiri; S. R. Elliott; Z. Fu; A. Galindo-Uribarri; G. K. Giovanetti; J. Goett; M. P. Green; J. Gruszko; I. S. Guinn; V. E. Guiseppe; R. Henning; E. W. Hoppe; S. Howard; M. A. Howe; B. R. Jasinski; K. J. Keeter; M. F. Kidd; S. I....

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The MAJORANA Collaboration is constructing the MAJORANA Demonstrator, an ultra-low background, 44-kg modular high-purity Ge (HPGe) detector array to search for neutrinoless double-beta decay in Ge-76. The phenomenon of surface micro-discharge induced by high-voltage has been studied in the context of the MAJORANA Demonstrator. This effect can damage the front-end electronics or mimic detector signals. To ensure the correct performance, every high-voltage cable and feedthrough must be capable of...
Topics: High Energy Physics - Experiment, Nuclear Experiment, Physics, Instrumentation and Detectors
Source: http://arxiv.org/abs/1603.08483

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