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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.
|Journal||Journal of Instrumentation|
|Publication status||Published - 11 Jun 2020|
- Dark Matter detectors (WIMPs, axions, etc.)
- Gaseous detectors
- Materials for gaseous detectors
- Gas systems and purification
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- 1 Finished
Experimental Particle Consolidated Grant 2019-2022
Gonella, L., Charlton, D., Allport, P., Watson, N., Watson, A., Goudzovski, E., Newman, P., Nikolopoulos, K., Watson, M., Ilten, P., Lazzeroni, C., Hawkes, C. & Worm, S.
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/10/19 → 31/03/23