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arXiv · 1603.08483

High voltage testing for the MAJORANA Demonstrator

N. Abgrall·I. J. Arnquist·F. T. Avignone III·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. Ejiri·S. 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
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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 Ge-76. 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.

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N. Abgrall, I. J. Arnquist, F. T. Avignone III, 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. Ejiri, S. 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. 2016-03-29. High voltage testing for the MAJORANA Demonstrator. https://doi.org/10.1016/j.nima.2016.04.006

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