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

N. Abgrall, E. Aguayo, F. T. Avignone, A. S. Barabash, F. E. Bertrand, M. Boswell, V. Brudanin, M. Busch, D. Byram, A. S. Caldwell, Y. D. Chan, C. D. Christofferson, D. C. Combs, C. Cuesta, J. A. Detwiler, P. J. Doe, Yu Efremenko, V. Egorov, H. Ejiri, S. R. ElliottJ. E. Fast, P. Finnerty, F. M. Fraenkle, A. Galindo-Uribarri, G. K. Giovanetti, J. Goett, M. P. Green, J. Gruszko, V. E. Guiseppe, K. Gusev, A. L. Hallin, R. Hazama, A. Hegai, R. Henning, E. W. Hoppe, S. Howard, M. A. Howe, K. J. Keeter, M. F. Kidd, O. Kochetov, S. I. Konovalov, R. T. Kouzes, B. D. Laferriere, J. Leon, L. E. Leviner, J. C. Loach, J. MacMullin, S. MacMullin, R. D. Martin, S. Meijer, S. Mertens, M. Nomachi, J. L. Orrell, C. O'Shaughnessy, N. R. Overman, D. G. Phillips, A. W.P. Poon, K. Pushkin, D. C. Radford, J. Rager, K. Rielage, R. G.H. Robertson, E. Romero-Romero, M. C. Ronquest, A. G. Schubert, B. Shanks, T. Shima, M. Shirchenko, K. J. Snavely, N. Snyder, A. M. Suriano, J. Thompson, V. Timkin, W. Tornow, J. E. Trimble, R. L. Varner, S. Vasilyev, K. Vetter, K. Vorren, B. R. White, J. F. Wilkerson, C. Wiseman, W. Xu, E. Yakushev, A. R. Young, C. H. Yu, V. Yumatov

Research output: Contribution to journalConference articlepeer-review

12 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)654-657
Number of pages4
JournalPhysics Procedia
Volume61
DOIs
StatePublished - 2015
Event13th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2013 - , United States
Duration: Sep 8 2013Sep 13 2013

Funding

We acknowledge support from the Office of Nuclear Physics in the DOE Office of Science, the Particle Astrophysics Program of the National Science Foundation, and the Russian Foundation for Basic Research. We acknowledge the support of the Sanford Underground Research Facility administration and staff.

Keywords

  • charge sensitive amplifer
  • low background
  • low noise
  • neutrinoless double beta decay
  • resistive-feedback front-end

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