High voltage testing for the MAJORANA Demonstrator
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.
Keywords
Cite
@article{arxiv.1603.08483,
title = {High voltage testing for the MAJORANA Demonstrator},
author = {N. Abgrall and I. J. Arnquist and F. T. Avignone and A. S. Barabash and F. E. Bertrand and A. W. Bradley and V. Brudanin and M. Busch and M. Buuck and D. Byram and A. S. Caldwell and Y-D. Chan and C. D. Christofferson and P. -H. Chu and C. Cuesta and J. A. Detwiler and P. J. Doe and C. Dunagan and Yu. Efremenko and H. Ejiri and S. R. Elliott and Z. Fu and A. Galindo-Uribarri and G. K. Giovanetti and J. Goett and M. P. Green and J. Gruszko and I. S. Guinn and V. E. Guiseppe and R. Henning and E. W. Hoppe and S. Howard and M. A. Howe and B. R. Jasinski and K. J. Keeter and M. F. Kidd and S. I. Konovalov and R. T. Kouzes and B. D. LaFerriere and J. Leon and A. Li and J. MacMullin and R. D. Martin and R. Massarczyk and S. J. Meijer and S. Mertens and J. L. Orrell and C. O'Shaughnessy and A. W. P. Poon and D. C. Radford and J. Rager and K. Rielage and R. G. H. Robertson and E. Romero-Romero and B. Shanks and M. Shirchenko and N. Snyder and A. M. Suriano and D. Tedeschi and A. Thompson and K. T. Ton and J. E. Trimble and R. L. Varner and S. Vasilyev and K. Vetter and K. Vorren and B. R. White and J. F. Wilkerson and C. Wiseman and W. Xu and E. Yakushev and C. -H. Yu and V. Yumatov},
journal= {arXiv preprint arXiv:1603.08483},
year = {2016}
}
Comments
9 pages, 12 figures, 8 tables, submitted to NIM A