The Majorana Demonstrator readout electronics system
N. Abgrall, M. Amman, I. J. Arnquist, F.T. Avignone, A.S. Barabash, C.J. Barton, P.J. Barton, F.E. Bertrand, K.H. Bhimani, B. Bos, A.W. Bradley, T.H. Burritt, M. Busch, M. Buuck, T.S. Caldwell, Y.-D. Chan, C.D. Christofferson, P.-H. Chu, Michael Clark, R.J. Cooper, C. Cuesta, J.A. Detwiler, A. Drobizhev, D.W. Edwins, Yu. Efremenko, H. Ejiri, S.R. Elliott, Thomas Gilliss, G.K. Giovanetti, M. P. Green, J. Gruszko, I.S. Guinn, V.E. Guiseppe, C. R. Haufe, R.J. Hegedus, R. Henning, D. Hervas Aguilar, E. W. Hoppe, A. Hostiuc, M.F. Kidd, I. Kim, R. T. Kouzes, A. Li, J. C. Loach, A.M. Lopez, J.M. López-Castaño, P.N. Luke, E. L. Martín, R.D. Martin, R. Massarczyk, S.J. Meijer, S. Mertens, J. Myslik, T. K. Oli, G. Othman, Daniel A. Peterson, W. Pettus, A. W. P. Poon, D. C. Radford, Julia E. Rager, A. L. Reine, K. Rielage, R.G.H. Robertson, N. W. Ruof, B. Sayki, M.J. Stortini, D. Tedeschi, Marcos Turqueti, T.D. Van Wechel, R. L. Varner, S. Vasilyev, K. Vetter, J. F. Wilkerson, C. Wiseman, W. Xu, H. Yaver, C.-H. Yu, B. X. Zhu, S. Zimmermann
Abstract
Abstract The Majorana Demonstrator comprises two arrays of high-purity germanium detectors constructed to search for neutrinoless double-beta decay in 76 Ge and other physics beyond the Standard Model. Its readout electronics were designed to have low electronic noise, and radioactive backgrounds were minimized by using low-mass components and low-radioactivity materials near the detectors. This paper provides a description of all components of the Majorana Demonstrator readout electronics, spanning the front-end electronics and internal cabling, back-end electronics, digitizer, and power supplies, along with the grounding scheme. The spectroscopic performance achieved with these readout electronics is also demonstrated.