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The MAJORANA Project

Journal Article · · Journal of Physics. Conference Series (Online)
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  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  3. Univ. of North Carolina, Chapel Hill, NC (United States); Triangle Univ. Nuclear Lab., Durham, NC (United States)
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  5. Univ. of Washington, Seattle, WA (United States)
  6. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of South Carolina, Columbia, SC (United States)
  7. North Carolina State Univ., Raleigh, NC (United States); Triangle Univ. Nuclear Lab., Durham, NC (United States)
  8. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  9. Inst. for Theoretical and Experimental Physics, Moscow (Russia)
  10. Univ. of Chicago, IL (United States)
  11. Joint Inst. for Nuclear Research (JINR), Dubna (Russian Federation)
  12. Univ. of Tennessee, Knoxville, TN (United States)
  13. Univ. of South Carolina, Columbia, SC (United States)
  14. Osaka Univ., Suita (Japan)
  15. Duke Univ., Durham, NC (United States); Triangle Univ. Nuclear Lab., Durham, NC (United States)
  16. Univ. of Alberta, Edmonton, AB (Canada)
  17. Univ. of South Dakota, Vermillion, SD (United States)
  18. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United State)
  19. Queen's Univ., Kingston, ON (Canada)
  20. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
  21. North Carolina State Univ., Raleigh, NC (United States)
Building a 0vββ experiment with the ability to probe neutrino mass in the inverted hierarchy region requires the combination of a large detector mass sensitive to 0vββ, on the order of 1-tonne, and unprecedented background levels, on the order of or less than 1 count per year in the 0vββ signal region. The Majorana Collaboration proposes a design based on using high-purity enriched 76Ge crystals deployed in ultra- low background electroformed Cu cryostats and using modern analysis techniques that should be capable of reaching the required sensitivity while also being scalable to a 1-tonne size. To demonstrate feasibility, the collaboration plans to construct a prototype system, the Majorana Demonstrator, consisting of 30 kg of 86% enriched 76Ge detectors and 30 kg of natural or isotope-76-depleted Ge detectors. We plan to deploy and evaluate two different Ge detector technologies, one based on a p-type configuration and the other on n-type.
Research Organization:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-76RL01830
OSTI ID:
1228360
Report Number(s):
PNNL-SA--102132; KB0401022
Journal Information:
Journal of Physics. Conference Series (Online), Journal Name: Journal of Physics. Conference Series (Online) Journal Issue: 1 Vol. 173; ISSN 1742-6596
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English

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