Long-term temporal stability of the DarkSide-50 dark matter detector
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.
Keywords
Cite
@article{arxiv.2311.18647,
title = {Long-term temporal stability of the DarkSide-50 dark matter detector},
author = {50 Collaboration and P. Agnes and I. F. M. Albuquerque and T. Alexander and A. K. Alton and M. Ave and H. O. Back and G. Batignani and K. Biery and V. Bocci and W. M. Bonivento and B. Bottino and S. Bussino and M. Cadeddu and M. Cadoni and F. Calaprice and A. Caminata and M. D. Campos and N. Canci and M. Caravati and N. Cargioli and M. Cariello and M. Carlini and V. Cataudella and P. Cavalcante and S. Cavuoti and S. Chashin and A. Chepurnov and C. Cicalò and G. Covone and D. D'Angelo and S. Davini and A. De Candia and S. De Cecco and G. De Filippis and G. De Rosa and A. V. Derbin and A. Devoto and M. D'Incecco and C. Dionisi and F. Dordei and M. Downing and D. D'Urso and M. Fairbairn and G. Fiorillo and D. Franco and F. Gabriele and C. Galbiati and C. Ghiano and C. Giganti and G. K. Giovanetti and A. M. Goretti and G. Grilli di Cortona and A. Grobov and M. Gromov and M. Guan and M. Gulino and B. R. Hackett and K. Herner and T. Hessel and B. Hosseini and F. Hubaut and T. Hugues and E. V. Hungerford and An. Ianni and V. Ippolito and K. Keeter and C. L. Kendziora and M. Kimura and I. Kochanek and D. Korablev and G. Korga and A. Kubankin and M. Kuss and M. Kuźniak and M. La Commara and M. Lai and X. Li and M. Lissia and G. Longo and O. Lychagina and I. N. Machulin and L. P. Mapelli and S. M. Mari and J. Maricic and A. Messina and R. Milincic and J. Monroe and M. Morrocchi and X. Mougeot and V. N. Muratova and P. Musico and A. O. Nozdrina and A. Oleinik and F. Ortica and L. Pagani and M. Pallavicini and L. Pandola and E. Pantic and E. Paoloni and K. Pelczar and N. Pelliccia and S. Piacentini and A. Pocar and D. M. Poehlmann and S. Pordes and S. S. Poudel and P. Pralavorio and D. D. Price and F. Ragusa and M. Razeti and A. Razeto and A. L. Renshaw and M. Rescigno and J. Rode and A. Romani and D. Sablone and O. Samoylov and E. Sandford and W. Sands and S. Sanfilippo and C. Savarese and B. Schlitzer and D. A. Semenov and A. Shchagin and A. Sheshukov and M. D. Skorokhvatov and O. Smirnov and A. Sotnikov and S. Stracka and Y. Suvorov and R. Tartaglia and G. Testera and A. Tonazzo and E. V. Unzhakov and A. Vishneva and R. B. Vogelaar and M. Wada and H. Wang and Y. Wang and S. Westerdale and M. M. Wojcik and X. Xiao and C. Yang and G. Zuzel},
journal= {arXiv preprint arXiv:2311.18647},
year = {2024}
}
Comments
13 pages, 5 figures