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$Breakup of $^{17}$F on $^{208}$Pb near the Coulomb barrier$

Breakup of $^{17}$F on $^{208}$Pb near the Coulomb barrier

Sep 18, 2013 09/13

Sep 18, 2013 J. F. Liang; J. R. Beene; A. Galindo-Uribarri; J. Gomez del Campo; C. J. Gross; P. A. Hausladen; P. E. Mueller; D. Shapira; D. W. Stracener; R. L. Varner; J. D. Bierman; H. Esbensen; Y. Larochelle

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Angular distributions of oxygen produced in the breakup of $^{17}$F incident on a $^{208}$Pb target have been measured around the grazing angle at beam energies of 98 and 120 MeV. The data are dominated by the proton stripping mechanism and are well reproduced by dynamical calculations. The measured breakup cross section is approximately a factor of 3 less than that of fusion at 98 MeV. The influence of breakup on fusion is discussed.
Source: http://arxiv.org/abs/nucl-ex/0212025v1

Arxiv.org

41 41

$Fusion of radioactive $^{132}$Sn with $^{64}$Ni$

Fusion of radioactive $^{132}$Sn with $^{64}$Ni

Sep 18, 2013 09/13

Sep 18, 2013 J. F. Liang; D. Shapira; J. R. Beene; C. J. Gross; R. L. Varner; A. Galindo-Uribarri; J. Gomez del Campo; P. A. Hausladen; P. E. Mueller; D. W. Stracener; H. Amro; J. J. Kolata; J. D. Bierman; A. L. Caraley; K. L. Jones; Y. Larochelle; W. Loveland; D. Peterson

eye 41

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Evaporation residue and fission cross sections of radioactive $^{132}$Sn on $^{64}$Ni were measured near the Coulomb barrier. A large sub-barrier fusion enhancement was observed. Coupled-channel calculations including inelastic excitation of the projectile and target, and neutron transfer are in good agreement with the measured fusion excitation function. When the change in nuclear size and shift in barrier height are accounted for, there is no extra fusion enhancement in $^{132}$Sn+$^{64}$Ni...
Source: http://arxiv.org/abs/0704.0780v2

Arxiv.org

53 53

$Enhanced Fusion-Evaporation Cross Sections in Neutron-Rich $^{132}$Sn on $^{64}$Ni$

Enhanced Fusion-Evaporation Cross Sections in Neutron-Rich $^{132}$Sn on $^{64}$Ni

Sep 19, 2013 09/13

Sep 19, 2013 J. F. Liang; D. Shapira; C. J. Gross; J. R. Beene; J. D. Bierman; A. Galindo-Uribarri; J. Gomez del Campo; P. A. Hausladen; Y. Larochelle; W. Loveland; P. E. Mueller; D. Peterson; D. C. Radford; D. W. Stracener; R. L. Varner

eye 53

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Evaporation residue cross sections have been measured with neutron-rich radioactive $^{132}$Sn beams on $^{64}$Ni in the vicinity of the Coulomb barrier. The average beam intensity was $2\times 10^{4}$ particles per second and the smallest cross section measured was less than 5 mb. Large subbarrier fusion enhancement was observed. Coupled-channels calculations taking into account inelastic excitation and neutron transfer underpredict the measured cross sections below the barrier.
Source: http://arxiv.org/abs/nucl-ex/0304002v2

Arxiv.org

68 68

Characteristics of Signals Originating Near the Lithium-Diffused N+ Contact of High Purity Germanium P-Type Point Contact Detectors

Sep 20, 2013 09/13

Sep 20, 2013 The MAJORANA Collaboration; E. Aguayo; M. Amman; F. T. Avignone III; A. S. Barabash; P. J. Barton; J. R. Beene; F. E. Bertrand; M. Boswell; V. Brudanin; M. Busch; Y-D. Chan; C. D. Christofferson; J. I. Collar; D. C. Combs; R. J. Cooper; J. A. Detwiler; P. J. Doe; Yu. Efremenko; V. Egorov; H. Ejiri; S. R. Elliott; J. Esterline; J. E. Fast; N. Fields; P. Finnerty; F. M. Fraenkle; A. Galindo-Uribarri; V. M. Gehman; G. K. Giovanetti; M. P. Green; V. E. Guiseppe; K. Gusey; A. L. Hallin; R. Hazama;...

eye 68

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A study of signals originating near the lithium-diffused n+ contact of p-type point contact (PPC) high purity germanium detectors (HPGe) is presented. The transition region between the active germanium and the fully dead layer of the n+ contact is examined. Energy depositions in this transition region are shown to result in partial charge collection. This provides a mechanism for events with a well defined energy to contribute to the continuum of the energy spectrum at lower energies. A novel...
Source: http://arxiv.org/abs/1207.6716v1

Arxiv.org

46 46

Elastic scattering and breakup of 17^F at 10 MeV/nucleon

Sep 22, 2013 09/13

Sep 22, 2013 J. F. Liang; J. R. Beene; H. Esbensen; A. Galindo-Uribarri; J. Gomez del Campo; C. J. Gross; M. L. Halbert; P. E. Mueller; D. Shapira; D. W. Stracener; I. J. Thompson; R. L. Varner

eye 46

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Angular distributions of fluorine and oxygen produced from 170 MeV 17^F incident on 208^Pb were measured. The elastic scattering data are in good agreement with optical model calculations using a double-folding potential and parameters similar to those obtained from 16^O+208^Pb. A large yield of oxygen was observed near \theta_lab=36 deg. It is reproduced fairly well by a calculation of the (17^F,16^O) breakup, which is dominated by one-proton stripping reactions. The discrepancy between our...
Source: http://arxiv.org/abs/nucl-ex/0106019v1

Arxiv.org

57 57

The MAJORANA DEMONSTRATOR: Progress towards showing the feasibility of a tonne-scale 76Ge neutrinoless double-beta decay experiment

Sep 22, 2013 09/13

Sep 22, 2013 P. Finnerty; E. Aguayo; M. Amman; F. T. Avignone. III; A. S. Barabash; P. J. Barton; J. R. Beene; F. E. Bertrand; M. Boswell; V. Brudanin; M. Busch; Y. -D. Chan; C. D. Christofferson; J. I. Collar; D. C. Combs; R. J. Cooper; J. A. Detwiler; P. J. Doe; Yu. Efremenko; V. Egorov; H. Ejiri; S. R. Elliott; J. Esterline; J. E. Fast; N. Fields; F. M. Fraenkle; A. Galindo-Uribarri; V. M. Gehman; G. K. Giovanetti; M. P. Green; V. E. Guiseppe; K. Gusey; A. L. Hallin; R. Hazama; R. Henning; E. W. Hoppe;...

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The MAJORANA DEMONSTRATOR will search for the neutrinoless double-beta decay of the 76Ge isotope with a mixed array of enriched and natural germanium detectors. The observation of this rare decay would indicate the neutrino is its own anti-particle, demonstrate that lepton number is not conserved, and provide information on the absolute mass-scale of the neutrino. The DEMONSTRATOR is being assembled at the 4850 foot level of the Sanford Underground Research Facility in Lead, South Dakota. The...
Source: http://arxiv.org/abs/1210.2678v1

Arxiv.org

46 46

The MAJORANA DEMONSTRATOR: A Search for Neutrinoless Double-beta Decay of Germanium-76

Sep 23, 2013 09/13

Sep 23, 2013 MAJORANA Collaboration; A. G. Schubert; E. Aguayo; F. T. Avignone III; H. O. Back; A. S. Barabash; M. Bergevin; F. E. Bertrand; M. Boswell; V. Brudanin; M. Busch; Y-D. Chan; C. D. Christofferson; J. I. Collar; D. C. Combs; R. J. Cooper; J. A. Detwiler; J. Leon; P. J. Doe; Yu. Efremenko; V. Egorov; H. Ejiri; S. R. Elliott; J. Esterline; J. E. Fast; N. Fields; P. Finnerty; F. M. Fraenkle; V. M. Gehman; G. K. Giovanetti; M. P. Green; V. E. Guiseppe; K. Gusey; A. L. Hallin; R. Hazama; R. Henning;...

eye 46

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The observation of neutrinoless double-beta decay would determine whether the neutrino is a Majorana particle and provide information on the absolute scale of neutrino mass. The MAJORANA Collaboration is constructing the DEMONSTRATOR, an array of germanium detectors, to search for neutrinoless double-beta decay of 76-Ge. The DEMONSTRATOR will contain 40 kg of germanium; up to 30 kg will be enriched to 86% in 76-Ge. The DEMONSTRATOR will be deployed deep underground in an ultra-low-background...
Source: http://arxiv.org/abs/1109.1567v1

Arxiv.org

58 58

Depth Requirements for a Tonne-scale 76Ge Neutrinoless Double-beta Decay Experiment

Sep 23, 2013 09/13

Sep 23, 2013 The MAJORANA Collaboration; E. Aguayo; F. T. Avignone III; H. O. Back; A. S. Barabash; M. Bergevin; F. E. Bertrand; M. Boswell; V. Brudanin; M. Busch; Y-D. Chan; C. D. Christofferson; J. I. Collar; D. C. Combs; R. J. Cooper; J. A. Detwiler; P. J. Doe; Yu. Efremenko; V. Egorov; H. Ejiri; S. R. Elliott; J. Esterline; J. E. Fast; N. Fields; P. Finnerty; F. M. Fraenkle; V. M. Gehman; G. K. Giovanetti; M. P. Green; V. E. Guiseppe; K. Gusey; A. L. Hallin; R. Hazama; R. Henning; A. Hime; E. W. Hoppe;...

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Neutrinoless double-beta decay experiments can potentially determine the Majorana or Dirac nature of the neutrino, and aid in understanding the neutrino absolute mass scale and hierarchy. Future 76Ge-based searches target a half-life sensitivity of >10^27 y to explore the inverted neutrino mass hierarchy. Reaching this sensitivity will require a background rate of ~5200 mwe is required for a tonne-scale experiment with a compact shield similar to the planned 40-kg MAJORANA DEMONSTRATOR. The...
Source: http://arxiv.org/abs/1109.4154v2

Arxiv.org

73 73

The Majorana Demonstrator

Sep 23, 2013 09/13

Sep 23, 2013 E. Aguayo; J. E. Fast; E. W. Hoppe; M. E. Keillor; J. D. Kephart; R. T. Kouzes; B. D. LaFerriere; J. Merriman; J. L. Orrell; N. R. Overman; F. T. Avignone III; H. O. Back; D. C. Combs; L. E. Leviner; A. R. Young; A. S. Barabash; S. I. Konovalov; I. Vanyushin; V. Yumatov; M. Bergevin; Y-D. Chan; J. A. Detwiler; J. C. Loach; R. D. Martin; A. W. P. Poon; G. Prior; K. Vetter; F. E. Bertrand; R. J. Cooper; D. C. Radford; R. L. Varner; C. -H. Yu; M. Boswell; S. R. Elliott; V. M. Gehman; A. Hime; M....

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A brief review of the history and neutrino physics of double beta decay is given. A description of the MAJORANA DEMONSTRATOR research and development program including background reduction techniques is presented in some detail. The application of point contact (PC) detectors to the experiment is discussed, including the effectiveness of pulse shape analysis. The predicted sensitivity of a PC detector array enriched to 86% in 76Ge is given.
Source: http://arxiv.org/abs/1109.6913v1

Arxiv.org

53 53

The Majorana experiment: an ultra-low background search for neutrinoless double-beta decay

Sep 23, 2013 09/13

Sep 23, 2013 D. G. Phillips II; E. Aguayo; F. T. Avignone III; H. O. Back; A. S. Barabash; M. Bergevin; F. E. Bertrand; M. Boswell; V. Brudanin; M. Busch; Y. -D. Chan; C. D. Christofferson; J. I. Collar; D. C. Combs; R. J. Cooper; J. A. Detwiler; P. J. Doe; Y. Efremenko; V. Egorov; H. Ejiri; S. R. Elliott; J. Esterline; J. E. Fast; N. Fields; P. Finnerty; F. M. Fraenkle; V. M. Gehman; G. K. Giovanetti; M. P. Green; V. E. Guiseppe; K. Gusey; A. L. Hallin; R. Hazama; R. Henning; A. Hime; E. W. Hoppe; M....

eye 53

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The observation of neutrinoless double-beta decay would resolve the Majorana nature of the neutrino and could provide information on the absolute scale of the neutrino mass. The initial phase of the Majorana experiment, known as the Demonstrator, will house 40 kg of Ge in an ultra-low background shielded environment at the 4850' level of the Sanford Underground Laboratory in Lead, SD. The objective of the Demonstrator is to determine whether a future 1-tonne experiment can achieve a background...
Source: http://arxiv.org/abs/1111.5578v1

Arxiv.org

70 70

Astroparticle Physics with a Customized Low-Background Broad Energy Germanium Detector

Sep 24, 2013 09/13

Sep 24, 2013 MAJORANA Collaboration; C. E. Aalseth; M. Amman; F. T. Avignone III; H. O. Back; A. S. Barabash; P. S. Barbeau; M. Bergevin; F. E. Bertrand; M. Boswell; V. Brudanin; W. Bugg; T. H. Burritt; M. Busch; G. Capps; Y-D. Chan; J. I. Collar; R. J. Cooper; R. Creswick; J. A. Detwiler; J. Diaz; P. J. Doe; Yu. Efremenko; V. Egorov; H. Ejiri; S. R. Elliott; J. Ely; J. Esterline; H. Farach; J. E. Fast; N. Fields; P. Finnerty; B. Fujikawa; E. Fuller; V. M. Gehman; G. K. Giovanetti; V. E. Guiseppe; K. Gusey;...

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The MAJORANA Collaboration is building the MAJORANA DEMONSTRATOR, a 60 kg array of high purity germanium detectors housed in an ultra-low background shield at the Sanford Underground Laboratory in Lead, SD. The MAJORANA DEMONSTRATOR will search for neutrinoless double-beta decay of 76Ge while demonstrating the feasibility of a tonne-scale experiment. It may also carry out a dark matter search in the 1-10 GeV/c^2 mass range. We have found that customized Broad Energy Germanium (BEGe) detectors...
Source: http://arxiv.org/abs/1007.3231v2

Arxiv.org

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

Jun 26, 2018 06/18

Jun 26, 2018 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

14 14

MAJORANA Collaboration's Experience with Germanium Detectors

Jun 26, 2018 06/18

Jun 26, 2018 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 14

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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

25 25

The Majorana Parts Tracking Database

Jun 26, 2018 06/18

Jun 26, 2018 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;...

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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

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Low Background Signal Readout Electronics for the MAJORANA DEMONSTRATOR

Jun 26, 2018 06/18

Jun 26, 2018 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 22

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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

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Analysis techniques for background rejection at the MAJORANA DEMONSTRATOR

Jun 27, 2018 06/18

Jun 27, 2018 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;...

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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

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Background Radiation Measurements at High Power Research Reactors

Jun 27, 2018 06/18

Jun 27, 2018 J. Ashenfelter; B. Balantekin; C. X. Baldenegro; H. R. Band; G. Barclay; C. D. Bass; D. Berish; N. S. Bowden; C. D. Bryan; J. J. Cherwinka; R. Chu; T. Classen; D. Davee; D. Dean; G. Deichert; M. J. Dolinski; J. Dolph; D. A. Dwyer; S. Fan; J. K. Gaison; A. Galindo-Uribarri; K. Gilje; A. Glenn; M. Green; K. Han; S. Hans; K. M. Heeger; B. Heffron; D. E. Jaffe; S. Kettell; T. J. Langford; B. R. Littlejohn; D. Martinez; R. D. McKeown; S. Morrell; P. E. Mueller; H. P. Mumm; J. Napolitano; D. Norcini;...

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Research reactors host a wide range of activities that make use of the intense neutron fluxes generated at these facilities. Recent interest in performing measurements with relatively low event rates, e.g. reactor antineutrino detection, at these facilities necessitates a detailed understanding of background radiation fields. Both reactor-correlated and naturally occurring background sources are potentially important, even at levels well below those of importance for typical activities. Here we...
Topics: Instrumentation and Detectors, Physics, Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1506.03547

Arxiv.org

25 25

Low Background Signal Readout Electronics for the MAJORANA DEMONSTRATOR

Jun 28, 2018 06/18

Jun 28, 2018 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

18 18

Status of the MAJORANA DEMONSTRATOR

Jun 28, 2018 06/18

Jun 28, 2018 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 18

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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

15 15

Recent direct reaction experimental studies with radioactive tin beams

Jun 28, 2018 06/18

Jun 28, 2018 K. L. Jones; S. Ahn; J. M. Allmond; A. Ayres; D. W. Bardayan; T. Baugher; D. Bazin; J. S. Berryman; A. Bey; C. Bingham; L. Cartegni; G. Cerizza; K. Y. Chae; J. A. Cizewski; A. Gade; A. Galindo-Uribarri; R. F. Garcia-Ruiz; R. Grzywacz; M. E. Howard; R. L. Kozub; J. F. Liang; B. Manning; M. Matos; S. McDaniel; D. Miller; C. D. Nesaraja; P. D. O'Malley; S. Padgett; E. Padilla-Rodal; S. D. Pain; S. T. Pittman; D. C. Radford; A. Ratkiewicz; K. T. Schmitt; A. Shore; M. S. Smith; D. W. Stracener; S....

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Direct reaction techniques are powerful tools to study the single-particle nature of nuclei. Performing direct reactions on short-lived nuclei requires radioactive ion beams produced either via fragmentation or the Isotope Separation OnLine (ISOL) method. Some of the most interesting regions to study with direct reactions are close to the magic numbers where changes in shell structure can be tracked. These changes can impact the final abundances of explosive nucleosynthesis. The structure of...
Topic: Nuclear Experiment
Source: http://arxiv.org/abs/1508.06531

Arxiv.org

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Light Collection and Pulse-Shape Discrimination in Elongated Scintillator Cells for the PROSPECT Reactor Antineutrino Experiment

Jun 28, 2018 06/18

Jun 28, 2018 J. Ashenfelter; B. Balantekin; H. R. Band; G. Barclay; C. D. Bass; D. Berish; N. S. Bowden; A. Bowes; J. P. Brodsky; C. D. Bryan; J. J. Cherwinka; R. Chu; T. Classen; K. Commeford; D. Davee; D. Dean; G. Deichert; M. V. Diwan; M. J. Dolinski; J. Dolph; D. A. Dwyer; J. K. Gaison; A. Galindo-Uribarri; K. Gilje; A. Glenn; B. W. Goddard; M. Green; K. Han; S. Hans; K. M. Heeger; B. Heffron; D. E. Jaffe; T. J. Langford; B. R. Littlejohn; D. A. Martinez Caicedo; R. D. McKeown; M. P. Mendenhall; P....

eye 16

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A meter-long, 23-liter EJ-309 liquid scintillator detector has been constructed to study the light collection and pulse-shape discrimination performance of elongated scintillator cells for the PROSPECT reactor antineutrino experiment. The magnitude and uniformity of light collection and neutron/gamma discrimination power in the energy range of antineutrino inverse beta decay products have been studied using gamma and spontaneous fission calibration sources deployed along the cell long axis. We...
Topics: Instrumentation and Detectors, Physics, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1508.06575

Arxiv.org

9 9.0

The PROSPECT Physics Program

Jun 28, 2018 06/18

Jun 28, 2018 J. Ashenfelter; B. Balantekin; H. R. Band; G. Barclay; C. D. Bass; D. Berish; N. S. Bowden; A. Bowes; C. D. Bryan; J. P. Brodsky; J. J. Cherwinka; R. Chu; T. Classen; K. Commeford; D. Davee; D. Dean; G. Deichert; M. V. Diwan; M. J. Dolinski; J. Dolph; J. K. Gaison; A. Galindo-Uribarri; K. Gilje; A. Glenn; B. W. Goddard; M. Green; K. Han; S. Hans; K. M. Heeger; B. Heffron; D. E. Jaffe; D. Jones; T. J. Langford; B. R. Littlejohn; D. A. Martinez Caicedo; R. D. McKeown; M. P. Mendenhall; P....

eye 9

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The Precision Reactor Oscillation and Spectrum Experiment, PROSPECT, is designed to make a precise measurement of the antineutrino spectrum from a highly-enriched uranium reactor and probe eV-scale sterile neutrinos by searching for neutrino oscillations over meter-long distances. PROSPECT is conceived as a 2-phase experiment utilizing segmented $^6$Li-doped liquid scintillator detectors for both efficient detection of reactor antineutrinos through the inverse beta decay reaction and excellent...
Topics: High Energy Physics - Experiment, Instrumentation and Detectors, Nuclear Experiment, Physics
Source: http://arxiv.org/abs/1512.02202

Arxiv.org

4 4.0

The Majorana Demonstrator Radioassay Program

Jun 29, 2018 06/18

Jun 29, 2018 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

9 9.0

High voltage testing for the MAJORANA Demonstrator

Jun 29, 2018 06/18

Jun 29, 2018 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....

eye 9

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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

Arxiv.org

3 3.0

The Majorana Demonstrator search for neutrinoless double beta decay

Jun 29, 2018 06/18

Jun 29, 2018 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

Jun 29, 2018 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;...

eye 3

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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

6 6.0

Initial Results from the MAJORANA DEMONSTRATOR

Jun 29, 2018 06/18

Jun 29, 2018 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 6

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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

10 10.0

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

Jun 29, 2018 06/18

Jun 29, 2018 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

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

Jun 29, 2018 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

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

Jun 29, 2018 06/18

Jun 29, 2018 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

7 7.0

Development of a plasma panel radiation detector

Jun 30, 2018 06/18

Jun 30, 2018 R. Ball; J. R. Beene; M. Ben-Moshe; Y. Benhammou; R. Bensimon; J. W. Chapman; E. Etzion; C. Ferretti; P. S. Friedman; D. S. Levin; Y. Silver; R. L. Varner; C. Weaverdyck; R. Wetzel; B. Zhou; T. Anderson; K. McKinny; E. H. Bentefour

eye 7

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This article reports on the development and experimental results of commercial plasma display panels adapted for their potential use as micropattern gas radiation detectors. The plasma panel sensors (PPS) design an materials include glass substrates, metal electrodes and inert gas mixtures which provide a physically robust, hermetically-sealed device. Plasma display panels used as detectors were tested with cosmic ray muons, beta rays and gamma rays, protons and thermal neutrons. The results...
Topics: Physics, High Energy Physics - Experiment, Instrumentation and Detectors
Source: http://arxiv.org/abs/1403.3454

Arxiv.org

5 5.0

Testing the Ge detectors for the MAJORANA DEMONSTRATOR

Jun 30, 2018 06/18

Jun 30, 2018 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

Jun 30, 2018 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

7 7.0

A Dark Matter Search with MALBEK

Jun 30, 2018 06/18

Jun 30, 2018 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

6 6.0

First results with a microcavity plasma panel detector

Jun 30, 2018 06/18

Jun 30, 2018 R. Ball; M. Ben-Moshe; Y. Benhammou; R. Bensimon; J. W. Chapman; M. Davies; E. Etzion; C. Ferretti; P. S. Friedman; D. S. Levin; Y. Silver; R. L. Varner; C. Weaverdyck; B. Zhou

eye 6

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A new type of gaseous micropattern particle detector based on a closed-cell microcavity plasma panel sensor is reported. The first device was fabricated with 1 x 1 x 2 mm cells. It has shown very clean signals of 0.6 to 2.5 volt amplitude, fast rise time of approximately 2 ns and FWHM of about 2 ns with very uniform signal shapes across all pixels. From initial measurements with beta particles from a radioactive source, a maximum pixel efficiency of greater than 95% is calculated, for operation...
Topics: Physics, Instrumentation and Detectors
Source: http://arxiv.org/abs/1407.6491

Arxiv.org

6 6.0

Status of the MAJORANA Demonstrator

Jun 30, 2018 06/18

Jun 30, 2018 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

5 5.0

The Majorana Demonstrator calibration system

Jun 30, 2018 06/18

Jun 30, 2018 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

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