Search for light dark matter with NEWS-G

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Abstract

The NEWS-G collaboration is searching for light dark matter candidates using a spherical proportional counter. Light gases, such as hydrogen, helium, and neon, are used as targets, providing access in the 0.1–10 GeV mass range. First results obtained with SEDINE, a 60 cm in diameter detector, in the Underground Laboratory of Modane yielded a 90% confidence level upper limit of 4.4⋅ 1037 cm2 on the nucleon-dark matter interaction cross-section for a candidate with 0.5 GeV mass. Recent developments in several aspects of the detector instrumentation are presented, along with the construction of a new, 140 cm in diameter, detector with new compact shielding.
Original languageEnglish
Article numberC06034
JournalJournal of Instrumentation
Volume15
Issue number06
DOIs
Publication statusPublished - 11 Jun 2020

Keywords

  • Dark Matter detectors (WIMPs, axions, etc.)
  • Gaseous detectors
  • Materials for gaseous detectors
  • Gas systems and purification

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