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4 results on '"Anne-Marie Suriano"'

1. Developing radiopure copper alloys for high strength low background applications

Author

Anne-Marie Suriano, E. W. Hoppe, S. M. Howard, I. J. Arnquist, and C. D. Christofferson

Subjects
Materials science, Fabrication, Alloy, Metallurgy, chemistry.chemical_element, Electrolyte, engineering.material, Copper, Chromium, chemistry, Electrical resistivity and conductivity, Electroforming, Thermal, engineering
Abstract

High purity copper continues to play an important role for ultra-low-background detectors. Measurements of rare nuclear decays, e.g. neutrinoless double-beta decay, and searches for dark matter can require construction materials that have high thermal and electrical conductivity with bulk radiopurity less than one micro-Becquerel per kilogram. However, experiments currently using components constructed of radiopure electroformed copper struggle with design of structural and mechanical parts due to the physical properties of pure copper. A higher strength material which possesses many of the favorable attributes of copper yet remains radiopure is desired. A number of copper alloying candidates which may provide improved mechanical performance and adequate radiopurity were considered. Development of an electrodeposited copper-chrome alloy from additive-free electrolyte systems is discussed. The resulting material is shown to possess high strength and meets the aforementioned radiopurity goals.

Published
2018

2. Analysis techniques for background rejection at the MAJORANA DEMONSTRATOR

Author

J. Gruszko, I. S. Guinn, M. Shirchenko, J. E. Trimble, A. S. Caldwell, John L. Orrell, C. X. Baldenegro-Barrera, G. K. Giovanetti, J. Rager, Kai Vetter, Chang-Hong Yu, H. Ejiri, Steven Elliott, C. D. Christofferson, M. F. Kidd, A. Galindo-Uribarri, D. Byram, J. A. Detwiler, C. Wiseman, Stanley M. Howard, R. L. Varner, S. Vasilyev, B. Shanks, V. E. Guiseppe, T. Gilliss, F. E. Bertrand, D. C. Radford, Brian D. LaFerriere, R. D. Martin, C.M. O'Shaughnessy, Keith Rielage, N. Abgrall, S. J. Meijer, B. R. Jasinski, M. Buuck, R. G. H. Robertson, K. J. Keeter, D. Tedeschi, A. S. Barabash, I. Zhitnikov, M. Busch, Richard T. Kouzes, J. F. Wilkerson, V. Yumatov, E. Romero-Romero, Yu. Efremenko, F. T. Avignone, A. W. Bradley, M. P. Green, I. J. Arnquist, N. Snyder, B. R. White, W. Xu, K. Vorren, C. Cuesta, A. W. P. Poon, J. MacMullin, S. I. Konovalov, Y-D. Chan, Susanne Mertens, Jonathan D. Leon, E. Yakushev, Anne-Marie Suriano, Eric W. Hoppe, J. Goett, Reyco Henning, V.B. Brudanin, and M. A. Howe

Subjects
Physics, Particle physics, Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, business.industry, Detector, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Modular design, Reduction (complexity), MAJORANA, Double beta decay, Neutrino, business, Event (particle physics), Data reduction
Abstract

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 interest around the Q-value at 2039 keV. The background rejection techniques to be applied to the data include cuts based on data reduction, pulse shape analysis, event coincidences, and time correlations. The Point Contact design of the DEMONSTRATOR 0s germanium detectors allows for significant reduction of gamma background., 4 pages, 2 figures

Published
2015

3. Low background signal readout electronics for the MAJORANA DEMONSTRATOR

Author

I. J. Arnquist, N. Snyder, T. Gilliss, R. D. Martin, M. Shirchenko, John L. Orrell, R. G. H. Robertson, Eric W. Hoppe, J. MacMullin, C. D. Christofferson, Brian D. LaFerriere, F. T. Avignone, R. L. Varner, Reyco Henning, M. F. Kidd, C. X. Baldenegro-Barrera, D. J. Tedeschi, W. Xu, J. Goett, A. Galindo-Uribarri, B. Shanks, E. Romero-Romero, V. E. Guiseppe, C.-H. Yu, S. Vasilyev, D. C. Radford, C. Wiseman, N. Abgrall, C. Cuesta, Keith Rielage, M. Buuck, K. J. Keeter, J. E. Trimble, Yuen-Dat Chan, B. R. Jasinski, J. F. Wilkerson, V. B. Brudanin, F. E. Bertrand, A. W. Bradley, S. I. Konovalov, M. A. Howe, Alan Poon, Anne-Marie Suriano, J. A. Detwiler, B. R. White, C. O'Shaughnessy, Vladimir Yumatov, Stanley M. Howard, J. Rager, Yu. Efremenko, S. R. Elliott, Richard T. Kouzes, Kai Vetter, Jonathan D. Leon, A. S. Barabash, I. S. Guinn, J. Gruszko, D. Byram, S. Mertens, M. P. Green, H. Ejiri, I. Zhitnikov, Matthew Busch, K. Vorren, A. S. Caldwell, G. K. Giovanetti, S. J. Meijer, and E. Yakushev

Subjects
Physics, Physics - Instrumentation and Detectors, Detector, FOS: Physical sciences, Readout electronics, Instrumentation and Detectors (physics.ins-det), Signal, Semiconductor detector, Nuclear physics, MAJORANA, Double beta decay, Nuclear Experiment (nucl-ex), Hpge detector, Nuclear Experiment, Scale down
Abstract

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 with a background goal of, 6 pages, 7 figures, 2 tables. LRT 2015 Proceedings

Published
2015

4. Status of the Majorana Demonstrator experiment

Author

W. Xu, Yu. Efremenko, O.I. Kochetov, E. Romero-Romero, Yuen-Dat Chan, Matthew Busch, Eric W. Hoppe, Werner Tornow, D. G. Phillips, K. J. Snavely, J. Goett, Kai Vetter, R. D. Martin, James E. Fast, V. B. Brudanin, Alexis G. Schubert, Ryuta Hazama, A. Galindo-Uribarri, K. Pushkin, A. Hegai, A. S. Caldwell, Jeffrey K. Thompson, R. G. H. Robertson, C.M. O'Shaughnessy, J. Esterline, J. Gruszko, M. P. Green, M. A. Howe, K. N. Gusev, H. Ejiri, L. E. Leviner, M. Shirchenko, John L. Orrell, S. Vasilyev, F. T. Avignone, Keith Rielage, Nicole R. Overman, S. MacMullin, N. Snyder, R. L. Varner, Vladimir Yumatov, Stanley M. Howard, A. R. Young, J. F. Wilkerson, V. G. Egorov, Reyco Henning, F. M. Fraenkle, A. L. Hallin, N. Abgrall, E. Aguayo, C. D. Christofferson, P. Finnerty, B. Shanks, Richard T. Kouzes, J. MacMullin, V. E. Guiseppe, S. R. Elliott, B. R. White, Susanne Mertens, Alan Poon, P. J. Doe, L. Mizouni, Anne-Marie Suriano, J. A. Detwiler, C.-H. Yu, V. V. Timkin, A. Soin, F. E. Bertrand, Tatsushi Shima, D. C. Combs, M. Boswell, Masaharu Nomachi, D. C. Radford, Jonathan D. Leon, K. J. Keeter, G. K. Giovanetti, J. C. Loach, Brian D. LaFerriere, K. Vorren, A. S. Barabash, E. Yakushev, M. C. Ronquest, S. I. Konovalov, and M. F. Kidd

Subjects
Nuclear physics, Physics, MAJORANA, Particle physics, Double beta decay, Neutrino
Abstract

The Majorana Demonstrator neutrinoless double beta-decay experiment is currently under construction at the Sanford Underground Research Facility in South Dakota, USA. An overview and status of the experiment are given.

Published
2014

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