Light WIMP search with the NEWS-G experiment

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A90263%2F25%3A00390822" target="_blank" >RIV/68407700:90263/25:00390822 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.22323/1.501.0477" target="_blank" >https://doi.org/10.22323/1.501.0477</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.22323/1.501.0477" target="_blank" >10.22323/1.501.0477</a>

Result language
angličtina
Original language name
Light WIMP search with the NEWS-G experiment
Original language description
The NEWS-G experiment uses spherical proportional counters (SPC) to probe for low-mass dark matter. An SPC is a metallic sphere filled with gas, featuring a high-voltage anode at its centre, which produces a radial electric field. The interaction between a dark matter particle and a nucleus can cause ionization of the gas, resulting in an electron avalanche near the anode and a detectable signal. The latest NEWS-G detector, S-140, is a copper sphere with a diameter of 140 cm, which took 10 days of data with methane at the LSM, producing world-leading WIMP-proton spin-dependent limits. The detector is now taking data at SNOLAB with various gases, including neon and helium. The LSM and SNOLAB campaigns have also highlighted new challenges to overcome to maximize the detector’s capabilities. This, in turn, led to the development of interesting new techniques in terms of characterization, discrimination, and reduction of backgrounds. This paper describes the NEWS-G experiment, presents the latest results from the LSM data and discusses the progress on data taking and analysis at SNOLAB.
Czech name
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Czech description
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Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
39th International Cosmic Ray Conference (ICRC2025)
ISBN
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ISSN
1824-8039
e-ISSN
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Number of pages
9
Pages from-to
1-9
Publisher name
PoS - Proceedings of Science, Sissa Medialab srl
Place of publication
Trieste
Event location
Geneva
Event date
Jul 14, 2025
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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