The NEWS-G detector at SNOLAB. (1st February 2023)

• Record Type: Journal Article
• Authors: Balogh, L.; Beaufort, C.; Brossard, A.; Caron, J.-F.; Chapellier, M.; Coquillat, J.-M.; Corcoran, E.C.; Crawford, S.; Dastgheibi-Fard, A.; Deng, Y.; Dering, K.; Durnford, D.; Garrah, C.; Gerbier, G.; Giomataris, I.; Giroux, G.; Gorel, P.; Gros, M.; Gros, P.; Guillaudin, O.; Hoppe, E.W.; Katsioulas, I.; Kelly, F.; Knights, P.; Langrock, S.; Lautridou, P.; Manthos, I.; Martin, R.D.; Matthews, J.; Mols, J.-P.; Muraz, J.F.; Neep, T.; Nikolopoulos, K.; O'Brien, P.; Piro, M.C.; Rowe, N.; Santos, D.; Samuleev, P.; Savvidis, G.; Savvidis, I.; Vazquez de Sola Fernandez, F.; Vidal, M.; Ward, R.; Zampaolo, M.;
• Is Part Of: Journal of instrumentation. Volume 18:Number 2(2023)
• Publication Date: 2023-02-01
• Subjects: Dark Matter detectors (WIMPs, axions, etc.) -- Electron multipliers (gas) -- Gaseous detectors; Scientific apparatus and instruments -- Periodicals; 502.84
• DOI: 10.1088/1748-0221/18/02/T02005
• Languages: English
• ISSNs: 1748-0221

Abstract

Abstract: The New Experiments With Spheres-Gas (NEWS-G) collaboration intends to achieve sub-GeV/c 2 Weakly Interacting Massive Particles (WIMPs) detection using Spherical Proportional Counters (SPCs). SPCs are gaseous detectors relying on ionisation with a single ionization electron energy threshold. The latest generation of SPC for direct dark matter searches has been installed at SNOLAB in Canada in 2021. This article details the different processes involved in the fabrication of the NEWS-G experiment. Also outlined in this paper are the mitigation strategies, measurements of radioactivity of the different components, and estimations of induced background event rates that were used to quantify and address detector backgrounds.