Journal ArticleThe Majorana Demonstrator readout electronics systemAbgrall, N.; Amman, M.; Arnquist, I.J.; Avignone, F.T.; Barabash, A.S.; Barton, C.J.; Barton, P.J.; Bertrand, F.E.; Bhimani, K.H.; Bos, B.; Bradley, A.W.; Burritt, T.H.; Busch, M.; Buuck, M.; Caldwell, T.S.; Chan, Y-D.; Christofferson, C.D.; Chu, P.-H.; Clark, M.L.; Cooper, R.J.; Cuesta, C..; Detwiler, J.A.; Drobizhev, A.; Edwins, D.W.; Efremenko, Yu.; Ejiri, H.; Elliott, S.R.; Gilliss, T.; Giovanetti, G.K.; Green, M.P.; Gruszko, J.; Guinn, I.S.; Guiseppe, V.E.; Haufe, C.R.; Hegedus, R.J.; Henning, R.; Hervas Aguilar, D.; Hoppe, E.W.; Hostiuc, A.; Kidd, M.F.; Kim, I.; Kouzes, R.T.; Li, A.; Loach, J.C.; Lopez, A.M.; López-Castaño, J.M.; Luke, P.N.; Martin, E.L.; Martin, R.D.; Massarczyk, R.; Meijer, S.J.; Mertens, S.; Myslik, J.; Oli, T.K.; Othman, G.; Peterson, D.; Pettus, W.; Poon, A.W.P.; Radford, D.C.; Rager, J.; Reine, A.L.; Rielage, K.; Robertson, R.G.H.; Ruof, N.W.; Sayki, B.; Stortini, M.J.; Tedeschi, D.; Turqueti, M.; Van Wechel, T.D.; Varner, R.L.; Vasilyev, S.; Vetter, K.; Wilkerson, J.F.; Wiseman, C.; Xu, W.; Yaver, H.; Yu, C.-H.; Zhu, B.X.; Zimmermann, S.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.2022-05-0110367958Journal of Instrumentation1705T050031748-0221https://doi.org/10.1088/1748-0221/17/05/T050031812356; 1812409National Science Foundation