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Title: The Majorana low-noise low-background front-end electronics

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.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [6] ;  [7] ;  [8] ;  [9] ;  [10] ;  [1] ;  [10] ;  [11] ;  [12] ;  [12] ;  [12] ;  [13] ;  [7] ;  [14] ;  [6] more »;  [2] ;  [15] ;  [15] ;  [5] ;  [15] ;  [6] ;  [5] ;  [12] ;  [16] ;  [7] ;  [17] ;  [14] ;  [18] ;  [15] ;  [2] ;  [10] ;  [15] ;  [19] ;  [20] ;  [7] ;  [4] ;  [2] ;  [2] ;  [12] ;  [11] ;  [21] ;  [15] ;  [15] ;  [9] ;  [15] ;  [1] ;  [14] ;  [2] ;  [15] ;  [2] ;  [11] ;  [1] ;  [9] ;  [5] ;  [15] ;  [6] ;  [12] ;  [22] ;  [6] ;  [12] ;  [15] ;  [14] ;  [7] ;  [15] ;  [9] ;  [10] ;  [23] ;  [7] ;  [8] ;  [15] ;  [5] ;  [13] ;  [24] ;  [15] ;  [5] ;  [25] ;  [16] ;  [6] ;  [7] ;  [11] ;  [5] ;  [4] « less
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of South Carolina, Columbia, SC (United States)
  4. Institute for Theoretical and Experiemental Physics, Moscow (Russia)
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  6. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  7. Joint Institute for Nuclear Research, Durham, NC (United States)
  8. Duke Univ., Durham, NC (United States); Triangle Univ. Nuclear Lab., Durham, NC (United States)
  9. Univ. of South Dakota, Vermillion, SD (United States)
  10. South Dakota School of Mines and Technology, Rapid City, SD (United States)
  11. North Carolina State Univ., Raleigh, NC (United States); Triangle Univ. Nuclear Lab., Durham, NC (United States)
  12. Univ. of Washington, Seattle, WA (United States)
  13. Univ. of Tennessee, Knoxville, TN (United States)
  14. Osaka Univ., Osaka (Japan)
  15. Univ. of North Carolina, Chapel Hill, NC (United States); Triangle Univ. Nuclear Lab., Durham, NC (United States)
  16. Univ. of South Carolina, Columbia, SC (United States)
  17. Univ. of Alberta, Edmonton, AB (Canada)
  18. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); North Carolina State Univ., Raleigh, NC (United States)
  19. Black Hills State Univ., Spearfish, SD (United States)
  20. Tennessee Tech Univ., Cookeville, TN (United States)
  21. Shanghai Jiao Tong Univ., Shanghai (China)
  22. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
  23. South Dakota School of Mines and Technology, Rapid City, SD (United States); Black Hills State Univ., Spearfish, SD (United States)
  24. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
  25. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of North Carolina, Chapel Hill, NC (United States); Triangle Univ. Nuclear Lab., Durham, NC (United States)
Publication Date:
OSTI Identifier:
1202433
Grant/Contract Number:
AC05-76RL01830
Type:
Accepted Manuscript
Journal Name:
Physics Procedia
Additional Journal Information:
Journal Volume: 61; Journal Issue: C; Journal ID: ISSN 1875-3892
Publisher:
Elsevier
Research Org:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY neutrinoless double beta decay; low noise; low background; resistive-feedback front-end; charge sensitive amplifer