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Title: The darkside multiton detector for the direct dark matter search

Although the existence of dark matter is supported by many evidences, based on astrophysical measurements, its nature is still completely unknown. One major candidate is represented by weakly interacting massive particles (WIMPs), which could in principle be detected through their collisions with ordinary nuclei in a sensitive target, producing observable low-energy (<100 keV) nuclear recoils. The DarkSide program aims at the WIPMs detection using a liquid argon time projection chamber (LAr-TPC). In this paper we quickly review the DarkSide program focusing in particular on the next generation experiment DarkSide-G2, a 3.6-ton LAr-TPC. The different detector components are described as well as the improvements needed to scale the detector from DarkSide-50 (50 kg LAr-TPC) up to DarkSide-G2. Finally, the preliminary results on background suppression and expected sensitivity are presented.
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  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  2. Univ. Paris Diderot, Paris (France)
  3. Augustana College, Sioux Falls, SD (United States)
  4. Univ. of California, Los Angeles, CA (United States)
  5. Princeton Univ., Princeton, NJ (United States)
  6. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  7. Lab. Nazionali del Gran Sasso, Assergi (Italy)
  8. Gran Sasso Science Institute, L'Aquila (Italy)
  9. Univ. degli Studi and INFN, Milano (Italy)
  10. Univ. degli Studi Roma Tre and INFN, Roma (Italy)
  11. Univ. of Massachusetts, Amherst, MA (United States)
  12. Univ. degli Studi and INFN, Cagliari (Italy)
  13. Univ. degli Studi and INFN, Genova (Italy)
  14. Moscow State Univ., Moscow (Russian Federation)
  15. Univ. degli Studi Federico II and INFN, Napoli (Italy)
  16. Univ. of Houston, Houston, TX (United States)
  17. Saint Petersburg Nuclear Physics Inst., Gatchina (Russia)
  18. Univ. of Hawaii, Honolulu, HI (United States)
  19. Joint Institute for Nuclear Research, Dubna (Russia)
  20. Univ. of Chicago, Chicago, IL (United States)
  21. Institute of High Energy Physics, Beijing (China)
  22. Brookhaven National Lab. (BNL), Upton, NY (United States)
  23. Univ. de Strasbourg, Strasbourg (France)
  24. Black Hills State Univ., Spearfish, SD (United States)
  25. Virginia Tech, Blacksburg, VA (United States)
  26. National Academy of Sciences Ukraine, Kiev (Ukraine)
  27. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  28. National Research Centre Kurchatov Institute, Moscow (Russia)
  29. Temple Univ., Philadelphia, PA (United States)
  30. Saint Petersburg Nuclear Physics Institute, Gatchina (Russia)
  31. Lab. Nazionali del Gran Sasso, Assegi (Italy)
  32. Jagiellonian Univ., Krakow (Poland)
  33. Univ. degli Studi and INFN, Perugia (Italy)
  34. Univ. of California, Los Angeles and Davis, CA (United States)
  35. Princeton Univ., Princeton, NJ (United States); Univ. degli Studi di Napoli Federico II and INFN (Italy)
  36. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  37. Augustana College, Sioux Falls, SC (United States)
  38. Univ. dego Studi and INFN, Genova (Italy)
Publication Date:
OSTI Identifier:
1195545
Grant/Contract Number:
AC05-76RL01830
Type:
Accepted Manuscript
Journal Name:
Advances in High Energy Physics
Additional Journal Information:
Journal Volume: 2015; Journal Issue: 1; Journal ID: ISSN 1687-7357
Publisher:
Hindawi
Research Org:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS