The Majorana Low-noise Low-background Front-end Electronics


Conference Paper

© 2015 Published by Elsevier B.V. The MAJORANA DEMONSTRATOR will search for the neutrinoless double beta decay (ββ(0ν)) of the isotope 76Ge with a mixed array of enriched and natural germanium detectors. In view of the next generation of tonne-scale germanium-based ββ(0ν)-decay searches, a major goal of the MAJORANA DEMONSTRATOR is to demonstrate a path forward to achieving a background rate at or below 1 cnt/(ROI-t-y) in the 4 keV region of interest (ROI) around the 2039-keV Q-value of the 76Ge ββ(0ν)-decay. Such a requirement on the background level significantly constrains the design of the readout electronics, which is further driven by noise and energy resolution performances. We present here the low-noise low- background front-end electronics developed for the low-capacitance p-type point contact (P-PC) germanium detectors of the MAJORANA DEMONSTRATOR. This resistive-feedback front-end, specifically designed to have low mass, is fabricated on a radioassayed fused-silica substrate where the feedback resistor consists of a sputtered thin film of high purity amorphous germanium and the feedback capacitor is based on the capacitance between gold conductive traces.

Full Text

Duke Authors

Cited Authors

  • Abgrall, N; Aguayo, E; Avignone, FT; Barabash, AS; Bertrand, FE; Boswell, M; Brudanin, V; Busch, M; Byram, D; Caldwell, AS; Chan, YD; Christofferson, CD; Combs, DC; Cuesta, C; Detwiler, JA; Doe, PJ; Efremenko, Y; Egorov, V; Ejiri, H; Elliott, SR; Fast, JE; Finnerty, P; Fraenkle, FM; Galindo-Uribarri, A; Giovanetti, GK; Goett, J; Green, MP; Gruszko, J; Guiseppe, VE; Gusev, K; Hallin, AL; Hazama, R; Hegai, A; Henning, R; Hoppe, EW; Howard, S; Howe, MA; Keeter, KJ; Kidd, MF; Kochetov, O; Konovalov, SI; Kouzes, RT; Laferriere, BD; Leon, J; Leviner, LE; Loach, JC; MacMullin, J; MacMullin, S; Martin, RD; Meijer, S; Mertens, S; Nomachi, M; Orrell, JL; O'Shaughnessy, C; Overman, NR; Phillips, DG; Poon, AWP; Pushkin, K; Radford, DC; Rager, J; Rielage, K; Robertson, RGH; Romero-Romero, E; Ronquest, MC; Schubert, AG; Shanks, B; Shima, T; Shirchenko, M; Snavely, KJ; Snyder, N; Suriano, AM; Thompson, J; Timkin, V; Tornow, W; Trimble, JE; Varner, RL; Vasilyev, S; Vetter, K; Vorren, K; White, BR; Wilkerson, JF; Wiseman, C; Xu, W; Yakushev, E; Young, AR; Yu, CH; Yumatov, V

Published Date

  • January 1, 2015

Published In

Volume / Issue

  • 61 /

Start / End Page

  • 654 - 657

Electronic International Standard Serial Number (EISSN)

  • 1875-3892

International Standard Serial Number (ISSN)

  • 1875-3884

Digital Object Identifier (DOI)

  • 10.1016/j.phpro.2014.12.066

Citation Source

  • Scopus