High voltage testing for the Majorana Demonstrator

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. EjiriS. 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. Konovalov, R. T. Kouzes, B. D. LaFerriere, J. Leon, A. Li, J. MacMullin, R. D. Martin, R. Massarczyk, S. J. Meijer, S. Mertens, J. L. Orrell, C. O'Shaughnessy, A. W.P. Poon, D. C. Radford, J. Rager, K. Rielage, R. G.H. Robertson, E. Romero-Romero, B. Shanks, M. Shirchenko, N. Snyder, A. M. Suriano, D. Tedeschi, A. Thompson, K. T. Ton, 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

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

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 76Ge. 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 supplying HPGe detector operating voltages as high as 5 kV without exhibiting discharge. R&D measurements were carried out to understand the testing system and determine the optimum design configuration of the high-voltage path, including different improvements of the cable layout and feedthrough flange model selection. Every cable and feedthrough to be used at the Majorana Demonstrator was characterized and the micro-discharge effects during the Majorana Demonstrator commissioning phase were studied. A stable configuration has been achieved, and the cables and connectors can supply HPGe detector operating voltages without exhibiting discharge.

Funding

This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics under Award Numbers DE-AC02-05CH11231 , DE-AC52-06NA25396 , DE-FG02-97ER41041 , DE-FG02-97ER41033 , DE-FG02-97ER41042 , DE-SC0012612 , DE-FG02-10ER41715 , DE-SC0010254 , and DE-FG02-97ER41020 . We acknowledge support from the Particle Astrophysics Program and Nuclear Physics Program of the National Science Foundation through grant numbers PHY-0919270 , PHY-1003940 , 0855314 , PHY-1202950 , MRI 0923142 and 1003399 . We acknowledge support from the Russian Foundation for Basic Research , grant No. 15-02-02919 . We acknowledge the support of the U.S. Department of Energy through the LANL/LDRD Program . This research used resources of the Oak Ridge Leadership Computing Facility, which is a DOE Office of Science User Facility supported under Contract DE-AC05-00OR22725 . This research used resources of the National Energy Research Scientific Computing Center, a DOE Office of Science User Facility supported under Contract No. DE-AC02-05CH11231 . We thank our hosts and colleagues at the Sanford Underground Research Facility for their support.

FundersFunder number
DOE Office of ScienceDE-AC05-00OR22725
LANL/LDRD
Office of Nuclear PhysicsDE-AC02-05CH11231, DE-SC0012612, DE-AC52-06NA25396, DE-FG02-97ER41020, DE-FG02-97ER41042, DE-FG02-10ER41715, DE-FG02-97ER41033, DE-FG02-97ER41041, DE-SC0010254
National Science FoundationPHY-1003940, PHY-0919270, MRI 0923142, PHY-1202950
U.S. Department of Energy
Directorate for Mathematical and Physical Sciences0855314, 0923142, 1003940, 0919270, 1003399, 1202950
Office of Science
Russian Foundation for Basic Research15-02-02919

    Keywords

    • High-voltage
    • Majorana
    • Micro-discharge
    • Vacuum

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