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arXiv · 2006.07231

Search for light dark matter with NEWS-G

K. Nikolopoulos
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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 4.4x 10^{37} cm^2 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.

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K. Nikolopoulos. 2020-06-12. Search for light dark matter with NEWS-G. https://doi.org/10.1088/1748-0221%2F15%2F06%2Fc06034

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