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

2024; Institute of Physics; Volume: 19; Issue: 05 Linguagem: Inglês

10.1088/1748-0221/19/05/p05057

1748-0221

P. Agnes, I. F. M. Albuquerque, T. Alexander, A. Alton, M. Ave, H.O. Back, G. Batignani, K. Biery, V. Bocci, W. Bonivento, B. Bottino, S. Bussino, M. Cadeddu, Mariano Cadoni, F. Calaprice, A. Caminata, M. D. Campos, N. Canci, M. Caravati, N. Cargioli, M. Cariello, M. Carlini, V. Cataudella, P. Cavalcante, S. Cavuoti, S. Chashin, A. Chepurnov, C. Cicalò, G. Covone, D. D’Angelo, S. Davini, A. De Candia, S. De Cecco, G. De Filippis, G. De Rosa, A. Derbin, A. Devoto, M. D'Incecco, C. Dionisi, F. Dordei, M. Downing, D. D’Urso, Malcolm Fairbairn, G. Fiorillo, D. Franco, F. Gabriele, C. Galbiati, C. Ghiano, C. Giganti, G. K. Giovanetti, A.M. Goretti, Giovanni Grilli di Cortona, A. Grobov, M. Gromov, M. Guan, M. Gulino, B. R. Hackett, K. Herner, T. Hessel, B. Hosseini, F. Hubaut, T. Hugues, E. Hungerford, An. Ianni, V. Ippolito, K. Keeter, C. Kendziora, Masato Kimura, I. Kochanek, D. Korablëv, G. Korga, A. Kubankin, M. Kuss, M. Kuźniak, M. La Commara, M. Laí, X. Li, M. Lissia, G. Longo, O. Lychagina, I. Machulin, L. Mapelli, S. M. Mari, J. Maricic, A. Messina, R. Milinčić, J. Monroe, M. Morrocchi, X. Mougeot, V. Muratova, P. Musico, A. Nozdrina, A. Oleinik, F. Ortica, L. Pagani, M. Pallavicini, L. Pandola, E. Pantic, E. Paoloni, K. Pelczar, N. Pelliccia, S. Piacentini, A. Pocar, D. M. Poehlmann, S. Pordes, S. S. Poudel, P. Pralavorio, D. Price, F. Ragusa, M. Razeti, A. Razeto, A.L. Renshaw, M. Rescigno, J. Rode, A. Romani, D. Sablone, O. Samoylov, E. Sandford, W. Sands, S. Sanfilippo, C. Savarese, B. Schlitzer, Д. А. Семенов, A. Shchagin, A. Sheshukov, M. D. Skorokhvatov, O. Smirnov, A. Sotnikov, S. Stracka, Y. Suvorov, R. Tartaglia, G. Testera, A. Tonazzo, E. Unzhakov, A. Vishneva, R. B. Vogelaar, M. Wada, H. Wang, Y. Wang, S. Westerdale, Mariusz Wojcik, Xiang Xiao, C. Yang, G. Zuzel,

Age of Information Optimization

Abstract 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. 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.