MicroBooNE 中通过液氩过滤系统实现氡气抑制的观测
仪器与探测器
2022-11-17 v2 高能物理 - 实验
摘要
MicroBooNE 液氩时间投影室 (LArTPC) 通过一套过滤系统维持高水平的液氩纯度，该系统可去除持续循环的液体、再冷凝蒸发气体及外部供应的氩气中的电负性污染物。我们利用 MicroBooNE LArTPC 重建 MeV 量级的放射性衰变。通过这一技术，我们测量了液氩过滤系统去除氡气的效能。具体研究方式是将一个 500 kBq 的 Rn 源置于过滤器上游，并寻找 LArTPC 中放射性衰变数量随时间增长的现象。在液氩过滤系统氡气抑制的两种模型（减速机制与捕获机制）背景下，MicroBooNE 数据支持氡气减少因子分别大于 99.999% 或 97%。此外，对过滤器的放射性调查发现，铜基过滤材料是去除 Rn 的主要介质。这是首次利用大型铜基过滤器在液氩中观测到氡气抑制，可为未来大型 LArTPC 提供一种氡气抑制方案。
引用
@article{arxiv.2203.10147,
title = {Observation of Radon Mitigation in MicroBooNE by a Liquid Argon Filtration System},
author = {MicroBooNE collaboration and P. Abratenko and J. Anthony and L. Arellano and J. Asaadi and A. Ashkenazi and S. Balasubramanian and B. Baller and C. Barnes and G. Barr and J. Barrow and V. Basque and L. Bathe-Peters and O. Benevides Rodrigues and S. Berkman and A. Bhanderi and A. Bhat and M. Bhattacharya and M. Bishai and A. Blake and T. Bolton and J. Y. Book and L. Camilleri and D. Caratelli and I. Caro Terrazas and F. Cavanna and G. Cerati and Y. Chen and D. Cianci and J. M. Conrad and M. Convery and L. Cooper-Troendle and J. I. Crespo-Anadon and M. Del Tutto and S. R. Dennis and P. Detje and A. Devitt and R. Diurba and R. Dorrill and K. Duffy and S. Dytman and B. Eberly and A. Ereditato and J. J. Evans and R. Fine and G. A. Fiorentini Aguirre and R. S. Fitzpatrick and B. T. Fleming and N. Foppiani and D. Franco and A. P. Furmanski and D. Garcia-Gamez and S. Gardiner and G. Ge and S. Gollapinni and O. Goodwin and E. Gramellini and P. Green and H. Greenlee and W. Gu and R. Guenette and P. Guzowski and L. Hagaman and O. Hen and C. Hilgenberg and G. A. Horton-Smith and A. Hourlier and R. Itay and C. James and X. Ji and L. Jiang and J. H. Jo and C. Joe and R. A. Johnson and Y. J. Jwa and D. Kalra and N. Kamp and N. Kaneshige and G. Karagiorgi and W. Ketchum and M. Kirby and T. Kobilarcik and I. Kreslo and I. Lepetic and J. -Y. Li and K. Li and Y. Li and K. Lin and B. R. Littlejohn and W. C. Louis and X. Luo and K. Manivannan and C. Mariani and D. Marsden and J. Marshall and D. A. Martinez Caicedo and K. Mason and A. Mastbaum and N. McConkey and V. Meddage and T. Mettler and K. Miller and J. Mills and K. Mistry and T. Mohayai and A. Mogan and M. Mooney and A. F. Moor and C. D. Moore and L. Mora Lepin and J. Mousseau and S. Mulleria Babu and D. Naples and A. Navrer-Agasson and N. Nayak and M. Nebot-Guinot and R. K. Neely and D. A. Newmark and J. Nowak and M. Nunes and O. Palamara and V. Paolone and A. Papadopoulou and V. Papavassiliou and H. B. Parkinson and S. F. Pate and N. Patel and A. Paudel and Z. Pavlovic and E. Piasetzky and I. Ponce-Pinto and S. Prince and X. Qian and J. L. Raaf and V. Radeka and A. Rafique and M. Reggiani-Guzzo and L. Ren and L. C. J. Rice and L. Rochester and J. Rodriguez Rondon and M. Rosenberg and M. Ross-Lonergan and C. Rudolph von Rohr and G. Scanavini and D. W. Schmitz and A. Schukraft and W. Seligman and M. H. Shaevitz and R. Sharankova and J. Shi and J. Sinclair and A. Smith and E. L. Snider and M. Soderberg and S. Soldner-Rembold and P. Spentzouris and J. Spitz and M. Stancari and J. St. John and T. Strauss and K. Sutton and S. Sword-Fehlberg and A. M. Szelc and W. Tang and K. Terao and C. Thorpe and D. Torbunov and D. Totani and M. Toups and Y. -T. Tsai and M. A. Uchida and T. Usher and B. Viren and M. Weber and H. Wei and A. J. White and Z. Williams and S. Wolbers and T. Wongjirad and M. Wospakrik and K. Wresilo and N. Wright and W. Wu and E. Yandel and T. Yang and G. Yarbrough and L. E. Yates and H. W. Yu and G. P. Zeller and J. Zennamo and C. Zhang and M. Zuckerbrot},
journal= {arXiv preprint arXiv:2203.10147},
year = {2022}
}
备注
14 pages, 7 figures, accepted by the Journal of Instrumentation