The Majorana Collaboration is searching for the neutrinoless double-beta decay of the nucleus 76Ge. The Majorana Demonstrator is an array of germanium detectors deployed with the aim of implementing background reduction techniques suitable for a tonne scale 76Ge-based search (the LEGEND collaboration). In the Demonstrator, germanium detectors operate in an ultra-pure vacuum cryostat at 80 K. One special challenge of an ultra-pure environment is to develop reliable cables, connectors, and electronics that do not significantly contribute to the radioactive background of the experiment. This paper highlights the experimental requirements and how these requirements were met for the Majorana Demonstrator, including plans to upgrade the wiring for higher reliability in the summer of 2018. Also described are requirements for LEGEND R&D efforts underway to meet these additional requirements
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3 January 2018
LOW RADIOACTIVITY TECHNIQUES 2017 (LRT 2017): Proceedings of the 6th International Workshop on Low Radioactivity Techniques
23–27 May 2017
Seoul, Korea
Research Article|
January 03 2018
Low background materials and fabrication techniques for cables and connectors in the Majorana Demonstrator
M. Busch;
M. Busch
a)
1
Department of Physics, Duke University
, Durham, NC, USA
2
Triangle Universities Nuclear Laboratory
, Durham, NC, USA
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N. Abgrall;
N. Abgrall
3
Nuclear Science Division, Lawrence Berkeley National Laboratory
, Berkeley, CA, USA
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S. I. Alvis;
S. I. Alvis
4
Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington
, Seattle, WA, USA
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I. J. Arnquist;
I. J. Arnquist
5
Pacific Northwest National Laboratory
, Richland, WA, USA
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F. T. Avignone, III;
F. T. Avignone, III
6
Department of Physics and Astronomy, University of South Carolina
, Columbia, SC, USA
7
Oak Ridge National Laboratory
, Oak Ridge, TN, USA
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A. S. Barabash;
A. S. Barabash
8
National Research Center “Kurchatov Institute” Institute for Theoretical and Experimental Physics
, Moscow, Russia
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C. J. Barton;
C. J. Barton
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Department of Physics, University of South Dakota
, Vermillion, SD, USA
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F. E. Bertrand
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Oak Ridge National Laboratory
, Oak Ridge, TN, USA
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T. Bode;
T. Bode
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Max-Planck-Institut für Physik
, München, Germany
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A. W. Bradley;
A. W. Bradley
3
Nuclear Science Division, Lawrence Berkeley National Laboratory
, Berkeley, CA, USA
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V. Brudanin;
V. Brudanin
11
Joint Institute for Nuclear Research
, Dubna, Russia
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M. Buuck;
M. Buuck
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Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington
, Seattle, WA, USA
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T. S. Caldwell;
T. S. Caldwell
2
Triangle Universities Nuclear Laboratory
, Durham, NC, USA
12
Department of Physics and Astronomy, University of North Carolina
, Chapel Hill, NC, USA
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Y.-D. Chan;
Y.-D. Chan
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Nuclear Science Division, Lawrence Berkeley National Laboratory
, Berkeley, CA, USA
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C. D. Christofferson;
C. D. Christofferson
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South Dakota School of Mines and Technology
, Rapid City, SD, USA
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P.-H. Chu;
P.-H. Chu
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Los Alamos National Laboratory
, Los Alamos, NM, USA
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C. Cuesta;
C. Cuesta
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Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington
, Seattle, WA, USA
23Present Address:
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
, CIEMAT, 28040, Madrid, Spain
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J. A. Detwiler;
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Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington
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C. Dunagan;
C. Dunagan
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South Dakota School of Mines and Technology
, Rapid City, SD, USA
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Yu. Efremenko;
Yu. Efremenko
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Oak Ridge National Laboratory
, Oak Ridge, TN, USA
15
Department of Physics and Astronomy, University of Tennessee
, Knoxville, TN, USA
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H. Ejiri
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Research Center for Nuclear Physics, Osaka University
, Ibaraki, Osaka, Japan
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S. R. Elliott;
S. R. Elliott
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Los Alamos National Laboratory
, Los Alamos, NM, USA
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T. Gilliss;
T. Gilliss
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Triangle Universities Nuclear Laboratory
, Durham, NC, USA
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Department of Physics and Astronomy, University of North Carolina
, Chapel Hill, NC, USA
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G. K. Giovanetti
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Department of Physics, Princeton University
, Princeton, NJ, USA
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M. P. Green;
M. P. Green
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Triangle Universities Nuclear Laboratory
, Durham, NC, USA
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Oak Ridge National Laboratory
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Department of Physics, North Carolina State University
, Raleigh, NC, USA
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J. Gruszko;
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Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington
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Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington
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Department of Physics and Astronomy, University of South Carolina
, Columbia, SC, USA
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C. R. Haufe;
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Triangle Universities Nuclear Laboratory
, Durham, NC, USA
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Department of Physics and Astronomy, University of North Carolina
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L. Hehn;
L. Hehn
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Nuclear Science Division, Lawrence Berkeley National Laboratory
, Berkeley, CA, USA
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R. Henning;
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Triangle Universities Nuclear Laboratory
, Durham, NC, USA
12
Department of Physics and Astronomy, University of North Carolina
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E. W. Hoppe;
E. W. Hoppe
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Pacific Northwest National Laboratory
, Richland, WA, USA
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M. A. Howe;
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Triangle Universities Nuclear Laboratory
, Durham, NC, USA
12
Department of Physics and Astronomy, University of North Carolina
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K. J. Keeter;
K. J. Keeter
19
Department of Physics, Black Hills State University
, Spearfish, SD, USA
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M. F. Kidd;
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Tennessee Tech University
, Cookeville, TN, USA
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National Research Center “Kurchatov Institute” Institute for Theoretical and Experimental Physics
, Moscow, Russia
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Pacific Northwest National Laboratory
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A. M. Lopez;
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Department of Physics and Astronomy, University of Tennessee
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Department of Physics, Engineering Physics and Astronomy, Queen’s University
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Los Alamos National Laboratory
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Triangle Universities Nuclear Laboratory
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Department of Physics and Astronomy, University of North Carolina
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Max-Planck-Institut für Physik
, München, Germany
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Physik Department, Technische Universität
, München, Germany
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Nuclear Science Division, Lawrence Berkeley National Laboratory
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Triangle Universities Nuclear Laboratory
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Triangle Universities Nuclear Laboratory
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Oak Ridge National Laboratory
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Los Alamos National Laboratory
, Los Alamos, NM, USA
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Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington
, Seattle, WA, USA
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Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington
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Triangle Universities Nuclear Laboratory
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Joint Institute for Nuclear Research
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South Dakota School of Mines and Technology
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Department of Physics and Astronomy, University of South Carolina
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Triangle Universities Nuclear Laboratory
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Triangle Universities Nuclear Laboratory
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Department of Physics and Astronomy, University of North Carolina
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Los Alamos National Laboratory
, Los Alamos, NM, USA
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Triangle Universities Nuclear Laboratory
, Durham, NC, USA
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Oak Ridge National Laboratory
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Department of Physics and Astronomy, University of North Carolina
, Chapel Hill, NC, USA
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Department of Physics and Astronomy, University of South Carolina
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Department of Physics, University of South Dakota
, Vermillion, SD, USA
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Joint Institute for Nuclear Research
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Oak Ridge National Laboratory
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National Research Center “Kurchatov Institute” Institute for Theoretical and Experimental Physics
, Moscow, Russia
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Joint Institute for Nuclear Research
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B. X. Zhu
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14
Los Alamos National Laboratory
, Los Alamos, NM, USA
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a)
Corresponding author: [email protected]
AIP Conf. Proc. 1921, 070002 (2018)
Citation
M. Busch, N. Abgrall, S. I. Alvis, I. J. Arnquist, F. T. Avignone, A. S. Barabash, C. J. Barton, F. E. Bertrand, T. Bode, A. W. Bradley, V. Brudanin, 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, M. P. Green, J. Gruszko, I. S. Guinn, V. E. Guiseppe, C. R. Haufe, L. Hehn, R. Henning, E. W. Hoppe, M. A. Howe, K. J. Keeter, M. F. Kidd, S. I. Konovalov, R. T. Kouzes, A. M. Lopez, R. D. Martin, R. Massarczyk, S. J. Meijer, S. Mertens, J. Myslik, C. O’Shaughnessy, G. Othman, A. W. P. Poon, D. C. Radford, J. Rager, A. L. Reine, K. Rielage, R. G. H. Robertson, N. W. Rouf, B. Shanks, M. Shirchenko, A. M. Suriano, D. Tedeschi, J. E. Trimble, R. L. Varner, S. Vasilyev, K. Vetter, K. Vorren, B. R. White, J. F. Wilkerson, C. Wiseman, W. Xu, E. Yakushev, C.-H. Yu, V. Yumatov, I. Zhitnikov, B. X. Zhu; Low background materials and fabrication techniques for cables and connectors in the Majorana Demonstrator. AIP Conf. Proc. 3 January 2018; 1921 (1): 070002. https://doi.org/10.1063/1.5019005
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