Publications (76)
Charge Trapping and Energy Performance of the MAJORANA DEMONSTRATOR
I. J. Arnquist, F. T. Avignone, A. S. Barabash +55
P-type point contact (PPC) high-purity germanium detectors are an important technology in astroparticle and nuclear physics due to their superb energy resolution, low noise, and pu…
-event Characterization and Rejection in Point-Contact HPGe Detectors
The MAJORANA Collaboration, I. J. Arnquist, F. T. Avignone +62
P-type point contact (PPC) HPGe detectors are a leading technology for rare event searches due to their excellent energy resolution, low thresholds, and multi-site event rejection…
Search for Tri-Nucleon Decay in the Majorana Demonstrator
S. I. Alvis, I. J. Arnquist, F. T. Avignone +63
The Majorana Demonstrator is an ultra low-background experiment searching for neutrinoless double-beta decay in Ge. The heavily shielded array of germanium detectors, placed…
Comment on "Fitting the annual modulation in DAMA with neutrons from muons and neutrinos''
P. S. Barbeau, J. I. Collar, Yu. Efremenko +1
We estimate rates of solar neutrino-induced neutrons in a DAMA/LIBRA-like detector setup, and find that the needed contribution to explain the annual modulation would require neutr…
LEGEND-1000 Preconceptual Design Report
LEGEND Collaboration, N. Abgrall, I. Abt +261
We propose the construction of LEGEND-1000, the ton-scale Large Enriched Germanium Experiment for Neutrinoless Decay. This international experiment is designed to answer one…
The Majorana Demonstrator search for neutrinoless double beta decay
C. Cuesta, M. Buuck, J. A. Detwiler +64
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)…
First Limit on the Direct Detection of Lightly Ionizing Particles for Electric Charge as Low as /1000 with the \textsc{Majorana Demonstrator}
S. I. Alvis, I. J. Arnquist, F. T. Avignone +61
The \textsc{Majorana Demonstrator} is an ultra low-background experiment searching for neutrinoless double-beta decay in Ge. The heavily shielded array of germanium detector…
A Low Energy Rare Event Search with the Majorana Demonstrator
MAJORANA Collaboration, C. Wiseman, I. J. Arnquist +59
The MAJORANA DEMONSTRATOR is sensitive to rare events near its energy threshold, including bosonic dark matter, solar axions, and lightly ionizing particles. In this analysis, a no…
Experimental study of 13C(α,n)16O reactions in the Majorana Demonstrator calibration data
MAJORANA Collaboration, I. J. Arnquist, F. T. Avignone +55
Neutron captures and delayed decays of reaction products are common sources of backgrounds in ultra-rare event searches. In this work, we studied C(O reactions i…
Contamination Control and Assay Results for the Majorana Demonstrator Ultra Clean Components
C. D. Christofferson, N. Abgrall, S. I. Alvis +67
The MAJORANA DEMONSTRATOR is a neutrinoless double beta decay experiment utilizing enriched Ge-76 detectors in 2 separate modules inside of a common solid shield at the Sanford Und…
Initial Results from the MAJORANA DEMONSTRATOR
S. R. Elliott, N. Abgrall, I. J. Arnquist +64
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 M…
Low Background Signal Readout Electronics for the MAJORANA DEMONSTRATOR
I. Guinn, N. Abgrall, F. T. Avignone +62
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 neutrinole…
A Dark Matter Search with MALBEK
G. K. Giovanetti, N. Abgrall, E. Aguayo +84
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…
The MAJORANA DEMONSTRATOR experiment's construction, commissioning, and performance
N. Abgrall, E. Aguayo, I. J. Arnquist +108
Background: The MAJORANA DEMONSTRATOR , a modular array of isotopically enriched high-purity germanium (HPGe) detectors, was constructed to demonstrate backgrounds low enough to ju…
The Large Enriched Germanium Experiment for Neutrinoless Double Beta Decay (LEGEND)
LEGEND Collaboration, N. Abgrall, A. Abramov +230
The observation of neutrinoless double-beta decay (0) would show that lepton number is violated, reveal that neutrinos are Majorana particles, and provide information on ne…
Background Model for the Majorana Demonstrator
C. Cuesta, N. Abgrall, E. Aguayo +84
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 pr…
Search for Zero-Neutrino Double Beta Decay in 76Ge with the Majorana Demonstrator
C. E. Aalseth, N. Abgrall, E. Aguayo +126
The \MJ\ Collaboration is operating an array of high purity Ge detectors to search for neutrinoless double-beta decay in Ge. The \MJ\ \DEM\ comprises 44.1~kg of Ge detectors…
Spectral analysis for the Majorana Demonstrator experiment
L. Hehn, N. Abgrall, S. I. Alvis +68
The MAJORANA DEMONSTRATOR is an experiment constructed to search for neutrinoless double-beta decays in germanium-76 and to demonstrate the feasibility to deploy a ton-scale experi…
Characteristics of Signals Originating Near the Lithium-Diffused N+ Contact of High Purity Germanium P-Type Point Contact Detectors
The MAJORANA Collaboration, E. Aguayo, M. Amman +83
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…
Initial Results from the Majorana Demonstrator
T. S. Caldwell, N. Abgrall, S. I. Alvis +69
The MAJORANA Collaboration has assembled an array of high purity Ge detectors to search for neutrinoless double-beta decay in Ge with the goal of establishing the required b…
The Status and Initial Results of the MAJORANA DEMONSTRATOR Experiment
V. E. Guiseppe, N. Abgrall, S. I. Alvis +67
Neutrinoless double-beta decay searches play a major role in determining the nature of neutrinos, the existence of a lepton violating process, and the effective Majorana neutrino m…
Modeling Backgrounds for the MAJORANA DEMONSTRATOR
C. R. Haufe, I. J. Arnquist, F. T. Avignone +55
The MAJORANA DEMONSTRATOR is a neutrinoless double-beta decay () experiment containing 30 kg of p-type point contact germanium detectors enriched to 88% in 76Ge and…
Data quality assurance for the MAJORANA DEMONSTRATOR
J. Myslik, N. Abgrall, S. I. Alvis +68
The MAJORANA DEMONSTRATOR is an experiment constructed to search for neutrinoless double-beta decays in germanium-76 and to demonstrate the feasibility to deploy a large-scale expe…
High voltage testing for the MAJORANA Demonstrator
N. Abgrall, I. J. Arnquist, F. T. Avignone +70
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-…
Astroparticle Physics with a Customized Low-Background Broad Energy Germanium Detector
MAJORANA Collaboration, C. E. Aalseth, M. Amman +100
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 Undergrou…
The Majorana Demonstrator calibration system
N. Abgrall, I. J. Arnquist, F. T. Avignone +64
The MAJORANA Collaboration is searching for the neutrinoless double-beta decay of the nucleus Ge. The MAJORANA DEMONSTRATOR is an array of germanium detectors deployed with…
ADC Nonlinearity Correction for the MAJORANA DEMONSTRATOR
N. Abgrall, J. M. Allmond, I. J. Arnquist +64
Imperfections in analog-to-digital conversion (ADC) cannot be ignored when signal digitization requirements demand both wide dynamic range and high resolution, as is the case for t…
Search for solar axions via axion-photon coupling with the Majorana Demonstrator
I. J. Arnquist, F. T. Avignone, A. S. Barabash +55
Axions were originally proposed to explain the strong-CP problem in QCD. Through the axion-photon coupling, the Sun could be a major source of axions, which could be measured in so…
Analysis techniques for background rejection at the MAJORANA DEMONSTRATOR
C. Cuesta, N. Abgrall, I. J. Arnquist +65
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 76G…
Signatures of muonic activation in the Majorana Demonstrator
I. J. Arnquist, F. T. Avignone, A. S. Barabash +55
Experiments searching for very rare processes such as neutrinoless double-beta decay require a detailed understanding of all sources of background. Signals from radioactive impurit…
The Majorana Demonstrator
E. Aguayo, J. E. Fast, E. W. Hoppe +90
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 r…
Depth Requirements for a Tonne-scale 76Ge Neutrinoless Double-beta Decay Experiment
The MAJORANA Collaboration, E. Aguayo, F. T. Avignone +90
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 hie…
Status of the MAJORANA DEMONSTRATOR experiment
MAJORANA Collaboration, R. D. Martin, N. Abgrall +82
The MAJORANA DEMONSTRATOR neutrinoless double beta-decay experiment is currently under construction at the Sanford Underground Research Facility in South Dakota, USA. An overview a…
Energy Calibration and Performance of HPGe Detectors in the LEGEND-200 Experiment
The LEGEND Collaboration, H. Acharya, M. Agostini +259
This paper describes the energy scale procedures and germanium detectors performance in the LEGEND-200 experiment, a critical component for the first unblinding in the search for n…
Neutrinoless Double Beta Decay
C. Adams, K. Alfonso, C. Andreoiu +229
This White Paper, prepared for the Fundamental Symmetries, Neutrons, and Neutrinos Town Meeting related to the 2023 Nuclear Physics Long Range Plan, makes the case for double beta…
Low Background Signal Readout Electronics for the MAJORANA DEMONSTRATOR
I. Guinn, N. Abgrall, I. J. Arnquist +65
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…
Final Result of the MAJORANA DEMONSTRATOR's Search for Neutrinoless Double- Decay in Ge
I. J. Arnquist, F. T. Avignone, A. S. Barabash +57
The MAJORANA DEMONSTRATOR searched for neutrinoless double- decay () of Ge using modular arrays of high-purity Ge detectors operated in vacuum cryostats in a lo…
The MAJORANA DEMONSTRATOR Readout Electronics System
N. Abgrall, M. Amman, I. J. Arnquist +76
The MAJORANA DEMONSTRATOR comprises two arrays of high-purity germanium detectors constructed to search for neutrinoless double-beta decay in 76-Ge and other physics beyond the Sta…
Large Plastic Scintillator Panels with WLS Fiber Readout; Optimization of Components
W. Bugg, Yu. Efremenko, S. Vasilyev
Results are presented on R&D efforts to design and build large size veto panels, optimized for underground low background experiments, in the most efficient and economical way usin…
Search for Spontaneous Radiation from Wavefunction Collapse in the Majorana Demonstrator
I. J. Arnquist, F. T. Avignone, A. S. Barabash +51
The Majorana Demonstrator neutrinoless double-beta decay experiment comprises a 44 kg (30 kg enriched in ) array of -type, point-contact germanium detectors. W…
Exotic dark matter search with the Majorana Demonstrator
I. J. Arnquist, F. T. Avignone, A. S. Barabash +56
With excellent energy resolution and ultra-low level radiogenic backgrounds, the high-purity germanium detectors in the Majorana Demonstrator enable searches for several classes of…
Majorana Demonstrator Data Release for AI/ML Applications
I. J. Arnquist, F. T. Avignone, A. S. Barabash +57
The enclosed data release consists of a subset of the calibration data from the Majorana Demonstrator experiment. Each Majorana event is accompanied by raw Germanium detector wavef…
Low Background Materials and Fabrication Techniques for Cables and Connectors in the Majorana Demonstrator
M. Busch, N. Abgrall, S. I. Alvis +67
The MAJORANA Collaboration is searching for the neutrinoless double-beta decay of the nucleus Ge-76. The MAJORANA DEMONSTRATOR is an array of germanium detectors deployed with the…
Background model for the MAJORANA DEMONSTRATOR
C. Cuesta, N. Abgrall, I. J. Arnquist +64
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 experim…
Search for Pauli Exclusion Principle Violating Atomic Transitions and Electron Decay with a P-type Point Contact Germanium Detector
N. Abgrall, I. J. Arnquist, F. T. Avignone +66
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 dete…
The Majorana Parts Tracking Database
The Majorana Collaboration, N. Abgrall, E. Aguayo +89
The Majorana Demonstrator is an ultra-low background physics experiment searching for the neutrinoless double beta decay of Ge. The Majorana Parts Tracking Database is used…
Energy Calibration of Germanium Detectors for the MAJORANA DEMONSTRATOR
I. J. Arnquist, F. T. Avignone, A. S. Barabash +53
The MAJORANA DEMONSTRATOR was a search for neutrinoless double-beta decay () in the Ge isotope. It was staged at the 4850-foot level of the Sanford Underground Rese…
Delayed charge recovery discrimination of passivated surface alpha events in P-type point-contact detectors
J. Gruszko, N. Abgrall, I. J. Arnquist +64
The Majorana Demonstrator searches for neutrinoless double-beta decay of Ge using arrays of high-purity germanium detectors. If observed, this process would demonstrate that…
MAJORANA Collaboration's Experience with Germanium Detectors
S. Mertens, N. Abgrall, F. T. Avignone +62
The goal of the \textsc{Majorana} \textsc{Demonstrator} project is to search for 0 decay in . Of all candidate isotopes for 0, …
Final Results of the MAJORANA DEMONSTRATOR's Search for Double-Beta Decay of Ge to Excited States of Se
I. J. Arnquist, F. T. Avignone, A. S. Barabash +45
Ge can decay into three possible excited states of Se, with the emission of two or, if the neutrino is Majorana, zero neutrinos. None of these six transitions…
The Majorana Demonstrator's Search for Double-Beta Decay of Ge to Excited States of Se
I. J. Arnquist, F. T. Avignone, A. S. Barabash +60
The Majorana Demonstrator is a neutrinoless double-beta decay search consisting of a low-background modular array of high-purity germanium detectors, of which are enriche…
Results of the MAJORANA DEMONSTRATOR's Search for Double-Beta Decay of Ge to Excited States of Se
I. S. Guinn, I. J. Arnquist, F. T. Avignone +57
The MAJORANA DEMONSTRATOR is searching for double-beta decay of Ge to excited states (E.S.) in Se using a modular array of high purity Germanium detectors. Ge…
The MAJORANA DEMONSTRATOR: Progress towards showing the feasibility of a tonne-scale 76Ge neutrinoless double-beta decay experiment
P. Finnerty, E. Aguayo, M. Amman +80
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…
Muon Flux Measurements at the Davis Campus of the Sanford Underground Research Facility with the Majorana Demonstrator Veto System
N. Abgrall, E. Aguayo, F. T. Avignone +71
We report the first measurement of the total MUON flux underground at the Davis Campus of the Sanford Underground Research Facility at the 4850 ft level. Measurements were done wit…
Interpretable Boosted Decision Tree Analysis for the Majorana Demonstrator
I. J. Arnquist, F. T. Avignone, A. S. Barabash +52
The Majorana Demonstrator is a leading experiment searching for neutrinoless double-beta decay with high purity germanium detectors (HPGe). Machine learning provides a new way to m…
Status of the MAJORANA Demonstrator
C. Cuesta, N. Abgrall, I. J. Arnquist +64
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 de…
A Search for Neutrinoless Double-Beta Decay in Ge with 26 kg-yr of Exposure from the MAJORANA DEMONSTRATOR
S. I. Alvis, I. J. Arnquist, F. T. Avignone +61
The MAJORANA Collaboration is operating an array of high purity Ge detectors to search for the neutrinoless double-beta decay of Ge. The MAJORANA DEMONSTRATOR consists of 44…
The Majorana Demonstrator Radioassay Program
N. Abgrall, I. J. Arnquist, F. T. Avignone +82
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…
The Processing of Enriched Germanium for the MAJORANA DEMONSTRATOR and R&D for a Possible Future Ton-Scale Ge-76 Double-Beta Decay Experiment
N. Abgrall, I. J. Arnquist, F. T. Avignone +67
The MAJORANA DEMONSTRATOR is an array of point-contact Ge detectors fabricated from Ge isotopically enriched to 88% in Ge-76 to search for neutrinoless double beta decay. The proce…
The {\sc Majorana Demonstrator} Neutrinoless Double-Beta Decay Experiment
Majorana Collaboration, N. Abgrall, E. Aguayo +82
The {\sc Majorana Demonstrator will search for the neutrinoless double-beta decay of the isotope Ge-76 with a mixed array of enriched and natural germanium detectors. The observati…
The MAJORANA DEMONSTRATOR: A Search for Neutrinoless Double-beta Decay of Germanium-76
MAJORANA Collaboration, S. R. Elliott, N. Abgrall +80
The {\sc Majorana} collaboration is searching for neutrinoless double beta decay using Ge, which has been shown to have a number of advantages in terms of sensitivities and…
Rare multi-nucleon decays with the full data sets of the Majorana Demonstrator
I. J. Arnquist, F. T. Avignone, A. S. Barabash +39
The Majorana Demonstrator was an ultra-low-background experiment designed for neutrinoless double-beta decay () investigation in Ge. Located at the Sanford Undergro…
Recent results from the MAJORANA DEMONSTRATOR
J. Myslik, S. I. Alvis, I. J. Arnquist +65
The MAJORANA DEMONSTRATOR is an experiment constructed to search for neutrinoless double-beta decay in Ge and to demonstrate the feasibility to deploy a large-scale experime…
Status of the MAJORANA DEMONSTRATOR
C. Cuesta, N. Abgrall, I. J. Arnquist +67
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 sea…
First Results on the Search for Lepton Number Violating Neutrinoless Double Beta Decay with the LEGEND-200 Experiment
H. Acharya, N. Ackermann, M. Agostini +256
The LEGEND collaboration is searching for neutrinoless double beta () decay by operating high-purity germanium detectors enriched in Ge in a low-background liquid a…
Search for charge nonconservation and Pauli exclusion principle violation with the Majorana Demonstrator
MAJORANA Collaboration, I. J. Arnquist, F. T. Avignone +55
Charge conservation and the Pauli exclusion principle result from fundamental symmetries in the standard model of particle physics, and are typically taken as axiomatic. High-preci…
Search for Free Decay of Negative Pions in Water and Light Materials
T. Numao, Yu. I. Davydov, J-M. Poutissou +7
We report on a search for the free decay component of pi- stopped in water and light materials. A non-zero value of this would be an indication of anomalous nu_e contamination to t…
An assay-based background projection for the MAJORANA DEMONSTRATOR using Monte Carlo Uncertainty Propagation
I. J. Arnquist, F. T. Avignone, A. S. Barabash +53
The background index is an important quantity which is used in projecting and calculating the half-life sensitivity of neutrinoless double-beta decay () experiments. A nov…
Design improvements to cables and connectors in the Majorana Demonstrator
C. R. Haufe, A. L. Reine, N. Abgrall +68
The Majorana Demonstrator is an experiment constructed to search for neutrinoless double-beta decays in germanium-76 and to demonstrate the feasibility to deploy a ton-scale experi…
COHERENT at the Spallation Neutron Source
P. S. Barbeau, Yu. Efremenko, K. Scholberg
The Spallation Neutron Source (SNS) at Oak Ridge National Laboratory provides an intense, high-quality source of neutrinos from pion decay at rest. This source was recently used fo…
A search for bremsstrahlung solar axions using the Majorana low-background BEGe detector at Kimballton (MALBEK)
N. Abgrall, E. Aguayo, F. T. Avignone +76
A low-background, high-purity germanium detector has been used to search for evidence of low-energy, bremsstrahlung-generated solar axions. An upper bound of …
The Majorana Demonstrator: A Search for Neutrinoless Double-beta Decay of 76Ge
Majorana Collaboration, W. Xu, N. Abgrall +63
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 elect…
Constraints on the decay of Ta
I. J. Arnquist, F. T. Avignone, A. S. Barabash +56
Ta is a rare nuclear isomer whose decay has never been observed. Its remarkably long lifetime surpasses the half-lives of all other known and electron capture decays…
Testing the Ge detectors for the MAJORANA DEMONSTRATOR
W. Xu, N. Abgrall, E. Aguayo +84
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 cru…
New limits on Bosonic Dark Matter, Solar Axions, Pauli Exclusion Principle Violation, and Electron Decay from the Majorana Demonstrator
N. Abgrall, I. J. Arnquist, F. T. Avignone +64
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…
The MAJORANA DEMONSTRATOR: A Search for Neutrinoless Double-beta Decay of Germanium-76
MAJORANA Collaboration, A. G. Schubert, E. Aguayo +90
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 MA…