16 research outputs found
Searches for sterile neutrinos at the DANSS experiment
No full textDANSS is a highly segmented 1 m3 plastic scintillator detector. The DANSS detector is placed under an industrial 3.1 GWth reactor of the Kalinin Nuclear Power Plant 350 km NW from Moscow. The distance to the core is varied on-line from 10.7 m to 12.7 m. The reactor building provides about 50 m water-equivalent shielding against the cosmic background. DANSS detects almost 5000 νe per day at the closest position with the cosmic background less than 3%. The inverse beta decay process is used to detect νe. Sterile neutrinos are searched for assuming the 4ν model (3 active and 1 sterile ν). The exclusion area in the Δm142,sin22θ14 plane is obtained using a ratio of positron energy spectra collected at different distances. Therefore results do not depend on the shape and normalization of the reactor νe spectrum nor the detector efficiency. Results are based on 966 thousand antineutrino events collected at three different distances from the reactor core. The excluded area covers a wide range of the sterile neutrino parameters down to sin22θ14 < 0.01 in the most sensitive region
Electronic catalogue of muonic X-rays
No full textμX-ray spectra for Z=9-90 were measured with HPGe detectors and muonic beams of PSI (Villigen, Switzerland) [1]. The results are presented as electronic atlas composed of graphic plots. The atlas is available at JINR site [2]
Electronic catalogue of muonic X-rays
No full textInternational audienceμX-ray spectra for Z=9-90 were measured with HPGe detectors and muonic beams of PSI (Villigen, Switzerland) [1]. The results are presented as electronic atlas composed of graphic plots. The atlas is available at JINR site [2]
Contamination control and assay results for the Majorana Demonstrator ultra clean components
No full textLow background materials and fabrication techniques for cables and connectors in the Majorana Demonstrator
No full textThe Large Enriched Germanium Experiment for Neutrinoless Double Beta Decay (LEGEND)
No full textThe observation of neutrinoless double-beta decay (0νββ) would show that lepton number is violated, reveal that neu-trinos are Majorana particles, and provide information on neutrino mass. A discovery-capable experiment covering the inverted ordering region, with effective Majorana neutrino masses of 15 - 50 meV, will require a tonne-scale experiment with excellent energy resolution and extremely low backgrounds, at the level of ∼0.1 count /(FWHM·t·yr) in the region of the signal. The current generation 76Ge experiments GERDA and the Majorana Demonstrator, utilizing high purity Germanium detectors with an intrinsic energy resolution of 0.12%, have achieved the lowest backgrounds by over an order of magnitude in the 0νββ signal region of all 0νββ experiments. Building on this success, the LEGEND collaboration has been formed to pursue a tonne-scale 76Ge experiment. The collaboration aims to develop a phased 0νββ experimental program with discovery potential at a half-life approaching or at 1028 years, using existing resources as appropriate to expedite physics results
Proceedings of the South Dakota Academy of Sciences, 2013, volume 92.
No full textProceedings of the South Dakota Academy of Science, 2013, Volume 92 The Ninety-Eighth (98th) Annual Meeting of the South Dakota Academy of Science, which was scheduled for April 12–13, 2013, was cancelled due to a snowstorm that made travel hazardous. The papers and abstracts included in this volume were not presented at an annual meeting. The Proceedings include the Treasurer’s Report, the Proceedings Editor’s Report, the 2013 Membership List, and the complete senior research papers and abstracts. Complete Senior Research Papers The Majorana Demonstrator: Overview and Status Update by K. J. Keeter, N. Abgrall, E. Aguayo, F. T. Avignone, A. S. Barabash, F. E. Bertrand, M. Boswell, V. Brudanin, M. Busch, A. S. Caldwell, Y.-D. Chan, C. D. Christofferson, D. C. Combs, C. Cuesta, J. A. Detwiler, P. J. Doe, Yu. Efremenko, V. Gorov’, 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, S. Howard, M. A. Howe, M. F. Kidd, O. Kochetov, S. I. Konovalov, R. T. Kouzes, B. D. LaFerriere, J. Leon, L. E. Leviner, J. C. Loach, S. MacMullin, R. D. Martin, S. Mertens, L. Mizouni, M. Nomac, C. O\u27Shaughnessy, J. L. Orrell, N. R. Overman, D. G. Phillips II, A. W. P. Poon, K. Pushkin, D. C. Radford, K. Rielage, R. G. H. Robertson, M. C. Ronquest, A. G. Schubert, B. Shanks, T. Shima, M. Shirchenko, K. J. Snavely, N. Snyder, A. Soin, J. Strain, A. M. Suriano, G. Swift, J. Thompson, V. Timkin, W. Tornow, R. L. Varner, S. Vasilyev, K. Vetter, K. Vorren, B. R. White, J. F. Wilkerson, C. Wiseman, W. Xu, E. Yakushev, A. R. Young, C. H. Yu, V. Yumatov; Taxonomic Status of Red Mulberry (Morus rubra, Moraceae) at Its Northwestern Boundary by M. P. Nepal and D. J. Wichern; Assemblage Structure of Chironomidae (Diptera: Insecta) from Wadeable Streams of the Northern Glaciated Plains, South Dakota, USA by Arjun Kafle, Nels H. Troelstrup, Jr., Jacob R. Krause, and Katie N. Bertrand; Rain-Induced Erosion: A Study in Badlands National Park by Emily C. French, Donna Kliche, Paul Smith, and Larry D. Stetler; Relationships Between New Primary Production, Water Transparency, Chlorophyll a, and Total Phosphorus in Oak Lake, Brookings County, South Dakota by Lyntausha C. Kuehl and Nels H. Troelstrup; Model for Seral Stage Classification and Monitoring of Big Bluestem-Sideoats Grama-Western Wheatgrass-Blue Grama Ecological Type in Central South Dakota by Daniel W. Uresk and Daryl E. Mergen; Ecological Model for Seral Stage Classification and Monitoring of Needle and Thread/Western Wheatgrass/Blue Grama Ecological Type by Daniel W. Uresk; Effects of Climate Change on Phenology of Blackbirds and Orioles (Icterids) in Eastern South Dakota by Kelsey Bedford, Nicole Burkard, Brandi Crider, Emma Barnett, and Nels H. Troelstrup, Jr.; Molecular Genetic Markers Linked to Soybean Aphid Resistance Loci in Soybean Line PI 71506 by J. Wassom, A. Van Nurden, and C. Carter; A Late Occurrence of the Bear Agriotherium from the Blancan Ringold Formation in Southeastern Washington by James E. Martin; Dietary Inclusion of a Commercial Probiotic During Rainbow Trout Rearing at a Production Hatchery: A Pilot Study by Matthew M. Wipf, Michael E. Barnes, and Ryan Derr; Does Individual Personality Type Influence Dietary Taste Preference Among South Dakota State University (SDSU) Students? by N. W. Fitch and M. O. Gaylor; and Danger in the School Science Lab: Are Students at Risk? by C. M. Ezrailson. Abstracts of Senior Research and Symposium Papers and Posters Extraction of Ancient DNA from 800-Year-Old Bison Bone by A. L. Gylfe and A. M. Kiesow; Examining Antibiotic Resistance in E. coli from Lake County, SD, and Lab Strain B by Amber Johnson and Donna Hazelwood; Quantification of Enzyme Activities Involved in Cellulose Decomposition by a Thermotolerant, Microaerophilic Bacterium Grown on Different Carbon Sources in Broth Culture by Kathleen A. Gibson and Bruce H. Bleakley; Multi-Drug Testing of Known Antimalarials via Fluorescence-Based High-Throughput Drug Screening by Brett Montieth, Jillian Draine, Jason Nies, and John Dixson; Discovery of Antimicrobial Properties in Artemisia ludoviciana and Monarda fistulosa by Alysha Weiler, Michael Oberle, Jay Jacobs, and John Dixson; Association Between Seed Dormancy and Flowering Time for Three Isolated Genomic Segments on Chromosome 6 in Rice (Oryza sativa L.) by M. S. Mispan, A. LaCayo, and X. Y. Gu; Phylogenetic Analysis of a Deep Subsurface Microbial Biofilm in the Sanford Underground Research Facility (SURF) at the Homestake Mine, Lead, South Dakota by A. E. Finch, A. Brakke, O. Gorbatenko, C. M. Anderson, and D. J. Bergmann; Plasma Corticosterone Levels Suggest Similar Stopover Habitat Quality for Riparian Corridor Woodlands and Anthropogenic Woodlots in the Northern Prairie Region by Ming Liu and David L. Swanson; Increasing Biodiversity of Native Perennial Biofuel Crops on the Prairie Farm by Cody J. Zilverberg, W. Carter Johnson, and Arvid Boe; Tradeoffs in Agronomic, Energetic, and Environmental Performance of Prairie and Corn Bioenergy Cropping Systems by Meghann E. Jarchow, Matt Liebman, Sashi Dhungel, Ranae Dietzel, David Sundberg, Robert P. Anex, Michael L. Thompson, and Teresita Chua; Building Knowledge of Alfalfa Seedling Shoot Morphology for Use in Future Breeding Programs by Derek Kannenberg, Lan Xu, and Arvid A. Boe; Formation of the White River-Missouri River Delta in South Dakota: Opportunities for Cottonwood Forest Regeneration by Malia Volke and W. Carter Johnson; Biology of the Switchgrass Gall Midge (Diptera: Cecidomyiidae) by Veronica Calles Torrez, Paul J. Johnson, and Arvid Boe; Preliminary Investigation of the Use of Placental Scars to Estimate Reproduction in Mountain Lions by B. L. Crider, T. W. Grovenburg, and J. A. Jenks; Brown County, South Dakota Waterways Analysis by B. Rose and J. Mitchell; Floristic Analysis of the Lower Brule Sioux Reservation by Jordan M. Purintun and Gary E. Larson; Using Ants (Hymenoptera: Formicidae) as Indicators of Restoration Success in Temperate Grasslands by L. B. Winkler and Paul J. Johnson; Belowground Bud Bank of Smooth Brome in Response to Mowing Treatments by Taylor Ranum, Lan Xu, Arvid Boe, Nels J. Troelstrup, Jr., and Haiming Kan; Present and Historic Riparian Vegetation Among Ecoregions of the White River by Alex Cahlander-Mooers and Mark D. Dixon; Fluorometric Measurement of Trace-Level Ammonia in an Ice-Core Melter System by Erica Maqnandhar and Jihong Cole-Dai; Finding Climate-Impacting Volcanic Eruptions in Ice Cores Using Sulfur Isotopes by Jihong Cole-Dai, David Ferris, and Alyson Lanciki; Electroforming Ultra-Radiopure Copper Alloys by Anne-Marie Suriano; Synthesis of Ionic Liquid N,N-Butylmethylpyrrolidinium Bis(trifluoromethanesulfonyl)imide with a Perdeuterated Butyl Group by Nicold J. Altena, Riley P. McManus, Rachel S. Anderson, Austin R. Letcher, Matthew E. Amundson, Gary W. Earl, and Duane E. Weisshaar; Synthesis of Terphenyls to Prevent Aggregation of Porphyrins by Garret Heiberger and Barrett Eichler; Synthesis of Electropositive Extended π-Conjugated Materials for Incorporation into Porphyrins for Solar Cells by Eric Habbe and Barrett Eichler; Synthesis and Electrochemical Characterization of Haloferrocenes by J. H. Kramer, A. R. Erck, A. Putta, J. D. Mottishaw, H. Sun, and M. D. Koppang; Evaluation of Simple Polyethylene Plastic Strips as Biomimetic Passive Sampling Devices for Estimating Bioavailability of Brominated Flame Retardants in Sewage Sludge Intended for Land Application by K. Even, M. Gaylor, and R. C. Hale; Analyzing Factors Influencing Teaching as a Career Choice Using Structural Equation Modeling by Kudhinath Padhy, Gemechis Dijira, Kenneth Emo, and Amit Doekar; and An Education: The View from Theory of Communication by B. A. Shmagin
The MONUMENT Experiment: Ordinary Muon Capture studies for 0 decay
No full textThe MONUMENT experiment measures ordinary muon capture (OMC) on isotopes
relevant for neutrinoless double-beta (0) decay and nuclear
astrophysics. OMC is a particularly attractive tool for improving the
theoretical description of 0 decay. It involves similar momentum
transfers and allows testing the virtual transitions involved in
0 decay against experimental data. During the 2021 campaign,
MONUMENT measured OMC on Se and Ba, the isotopes relevant for
next-generation 0 decay searches, like LEGEND and nEXO. The
experimental setup has been designed to accurately extract the total and
partial muon capture rates, which requires precise reconstruction of energies
and time-dependent intensities of the OMC-related rays. The setup also
includes a veto counter system to allow selecting a clean sample of OMC events.
This work provides a detailed description of the MONUMENT setup operated during
the 2021 campaign, its two DAQ systems, calibration and analysis approaches,
and summarises the achieved detector performance. Future improvements are also
discussed.Comment: 18 pages, 20 figures, submitted to EPJ
