The NEWS-G detector at SNOLAB

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 lat...

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Veröffentlicht in:	Journal of instrumentation 2023-02, Vol.18 (2), p.T02005
Hauptverfasser:	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.
Format:	Artikel
Sprache:	eng
Schlagworte:	Dark matter dark matter detectors Dark Matter detectors (WIMPs, axions, etc.) Electron energy electron multipliers Electron multipliers (gas) gas Gas detectors Gaseous detectors Instrumentation and Detectors OTHER INSTRUMENTATION Physics WIMPS
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Beschreibung
Zusammenfassung:	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.
ISSN:	1748-0221 1748-0221
DOI:	10.1088/1748-0221/18/02/T02005