Accès ouvert déclaré
2023
preprint
Measurement of ambient radon progeny decay rates and energy spectra in liquid argon using the MicroBooNE detector
MicroBooNE collaboration, P. Abratenko, O. Alterkait, D. Andrade Aldana, L. Arellano, J. Asaadi, A. Ashkenazi, S. Balasubramanian, B. Baller, G. Barr, D. Barrow, J. Barrow, V. Basque, O. Benevides Rodrigues, S. Berkman, A. Bhanderi, A. Bhat, M. Bishai, A. Blake, B. Bogart, T. Bolton, J. Y. Book, L. Camilleri, Y. Cao, D. Caratelli, I. Caro Terrazas, F. Cavanna, G. B. Cerati, Y. Chen, J. M. Conrad, M. R. Convery, L. Cooper-Troendle, J. I. Crespo-Anadón, Ryan Cross, M. Del Tutto, P. Detje, Ann Devitt, Z. Djurcic, R. Dorrill, K. Duffy, S. Dytman, B. Eberly, P. Englezos, A. Ereditato, J. J. Evans, R. Fine, O. G. Finnerud, B. T. Fleming, N. Foppiani, W. Foreman, D. Franco, A. P. Furmanski, D. Garcia-Gamez, S. Gardiner, G. Ge, S. Gollapinni, O. Goodwin, E. Gramellini, P. Green, H. Greenlee, W. Gu, R. Guénette, P. Guzowski, L. Hagaman, O. Hen, R. Hicks, C. Hilgenberg, G. A. Horton-Smith, Z. Imani, B. Irwin, R. Itay, C. James, X. Ji, L. Jiang, J. H. Jo, R. A. Johnson, Y. J. Jwa, D. Kalra, N. Kamp, G. Karagiorgi, W. Ketchum, M. Kirby, T. Kobilarcik, I. Kreslo, M. B. Leibovitch, I. Lepetic, J. -Y. Li, K. Li, Yangmu Li, K. Lin, B. R. Littlejohn, H. Liu, W. C. Louis, X. Luo, C. Mariani, D. Marsden, J. Marshall, N. Lorenzo Martinez, D. A. Martínez Caicedo, S. Martynenko, A. Mastbaum, N. McConkey, V. Meddage, Jessie Micallef, K. Miller, K. Mistry, T. Mohayai, A. Mogan, M. Mooney, A. F. Moor, C. D. Moore, L. Mora Lepin, M. M. Moudgalya, S. Mulleria Babu, D. Naples, A. Navrer-Agasson, N. Nayak, M. Nebot-Guinot, J. Nowak, N. Oza, O. Palamara, N. Pallat, V. Paolone, A. Papadopoulou, V. Papavassiliou, H. Parkinson, S. F. Pate, N. D. Patel, Ž. Pavlović, E. Piasetzky, I. Ponce-Pinto, I. Pophale, X. Qian, J. L. Raaf, V. Radeka, A. Rafique, M. Reggiani-Guzzo, L. Ren, Lynn Rochester, J. Rodriguez Rondon, M. Rosenberg, M. Ross-Lonergan, C. Rudolph von Rohr, I. Safa, G. Scanavini, D. W. Schmitz, A. Schukraft, W. Seligman, M.H. Shaevitz, R. Sharankova, J. Y. Shi, E. L. Snider, M. Söderberg, S. Söldner‐Rembold, J. Spitz, M. Stancari, T. Strauss, A. M. Szelc, W. Tang, N. Taniuchi, K. Terao, C. Thorpe, D. Torbunov, D. Totani, M. Toups, Y. -T. Tsai, J. Tyler, M. A. Uchida, T. Usher, B. Viren, M. Weber, H. Wei, A. J. White, Z. Williams, S. Wolbers, T. Wongjirad, M. Wospakrik, N. Wright, W. Wu, E. Yandel, T. Yang, L. E. Yates, H. W. Yu, G. P. Zeller, J. Zennamo, C. Zhang
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Résumé fourni par la source
We report measurements of radon progeny in liquid argon within the MicroBooNE time projection chamber (LArTPC). The presence of specific radon daughters in MicroBooNE's 85 metric tons of active liquid argon bulk is probed with newly developed charge-based low-energy reconstruction tools and analysis techniques to detect correlated $^{214}$Bi-$^{214}$Po radioactive decays. Special datasets taken during periods of active radon doping enable new demonstrations of the calorimetric capabilities of single-phase neutrino LArTPCs for $β$ and $α$ particles with electron-equivalent energies ranging from 0.1 to 3.0 MeV. By applying $^{214}$Bi-$^{214}$Po detection algorithms to data recorded over a 46-day period, no statistically significant presence of radioactive $^{214}$Bi is detected, and a limit on the activity is placed at $<0.35$ mBq/kg at the 95% confidence level. This bulk $^{214}$Bi radiopurity limit -- the first ever reported for a liquid argon detector incorporating liquid-phase purification -- is then further discussed in relation to the targeted upper limit of 1 mBq/kg on bulk $^{222}$Rn activity for the DUNE neutrino detector.
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Sujets associés
Atomic and Subatomic Physics ResearchQuantum, superfluid, helium dynamicsDark Matter and Cosmic Phenomena