Long-term temporal stability of the DarkSide-50 dark matter detector

Journal Article · 21 May 2024 · Journal of Instrumentation

DOI: https://doi.org/10.1088/1748-0221/19/05/p05057 · OSTI ID:2305624

Agnes, Paulo ^[1]; Albuquerque, Ivone Freire Da Mota; Alexander, Thomas R.; Alton, A. K.; Ave, M.; Back, Henning O.; Batignani, G.; Biery, Kurt; Bocci, Valerio; Bonivento, Walter M.; Bottino, Bianca; Bussino, Severino; Cadeddu, Matteo; Cadoni, Mariano; Calaprice, Frank; Caminata, A.; Campos, M. D.; Canci, N.; Caravati, Mauro; Cargioli, Nicola ; Cariello, Massimo; Carlini, Macro; Cataudella, V.; Cavalcante, Paolo; Cavuoti, S.; Chashin, S.; Chepurnov, Aleksandr; Cicalò, C.; Covone, G.; D'Angelo, Davide; Davini, Stefano; De Candia, A.; De Cecco, Sandro; De Filippis, G.; De Rosa, G.; Derbin, A. V.; Devoto, A.; D'Incecco, M.; Dionisi, C.; Dordei, F.; Downing, M.; D'Urso, D.; Fairbairn, M.; Fiorillo, G.; Franco, D.; Gabriele, F.; Galbiati, C.; Ghiano, C.; Giganti, C.; Giovanetti, G. K.; Goretti, A. M.; Grilli di Cortona, G.; Grobov, A.; Gromov, M.; Guan, M.; Gulino, M.; Hackett, Brianne R.; Herner, K.; Hessel, T.; Hosseini, B.; Hubaut, F.; Hugues, T. ; Hungerford, E. V.; Ianni, An; Ippolito, V.; Keeter, K.; Kendziora, C. L.; Kimura, M. ; Kochanek, I.; Korablev, D.; Korga, G.; Kubankin, A.; Kuss, M.; Kuźniak, M.; La Commara, M.; Lai, M.; Li, X.; Lissia, M.; Longo, G.; Lychagina, O.; Machulin, I. N.; Mapelli, L. P.; Mari, S. M.; Maricic, J.; Messina, A.; Milincic, R.; Monroe, J.; Morrocchi, M.; Mougeot, X.; Muratova, V. N.; Musico, P.; Nozdrina, A. O.; Oleinik, A.; Ortica, F.; Pagani, L.; Pallavicini, M.; Pandola, L.; Pantic, E.; Paoloni, E.; Pelczar, K.; Pelliccia, N.; Piacentini, S.; Pocar, A.; Poehlmann, D. M.; Pordes, S.; Poudel, S. S.; Pralavorio, P.; Price, D. D.; Ragusa, F.; Razeti, M.; Razeto, A.; Renshaw, A. L.; Rescigno, M.; Rode, J.; Romani, A.; Sablone, D.; Samoylov, O.; Sandford, E.; Sands, W.; Sanfilippo, S.; Savarese, C.; Schlitzer, B.; Semenov, D. A.; Shchagin, A.; Sheshukov, A.; Skorokhvatov, M. D.; Smirnov, O.; Sotnikov, A.; Stracka, S.; Suvorov, Y.; Tartaglia, R.; Testera, G.; Tonazzo, A.; Unzhakov, E. V.; Vishneva, A.; Vogelaar, R. B.; Wada, M.; Wang, H.; Wang, Y.; Westerdale, S.; Wojcik, M. M.; Xiao, X.; Yang, C.; Zuzel, G.

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1. Royal Holloway, Univ. of London (RHUL), Egham (United Kingdom); DarkSide-50 Collaboration. et al.

The stability of a dark matter detector on the timescale of a few years is a key requirement due to the large exposure needed to achieve a competitive sensitivity. It is especially crucial to enable the detector to potentially detect any annual event rate modulation, an expected dark matter signature. Here, in this work, we present the performance history of the DarkSide-50 dual-phase argon time projection chamber over its almost three-year low-radioactivity argon run. In particular, we focus on the electroluminescence signal that enables sensitivity to sub-keV energy depositions. The stability of the electroluminescence yield is found to be better than 0.5%. Finally, we show the temporal evolution of the observed event rate around the sub-keV region being consistent to the background prediction.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP); USDOE Office of Science (SC), Nuclear Physics (NP)
• Grant/Contract Number: AC02-07CH11359; AC05-76RL01830; FG02-91ER40671
• OSTI ID: 2305624
• Report Number(s): FERMILAB-PUB--23-0883-PPD; PNNL-SA--214032; arXiv:2311.18647; oai:inspirehep.net:2728695
• Journal Information: Journal of Instrumentation, Journal Name: Journal of Instrumentation Journal Issue: 05 Vol. 19; ISSN 1748-0221
• Publisher: Institute of Physics (IOP)Copyright Statement
• Country of Publication: United States
• Language: English