LUX 探测器中本底电子发射的研究
仪器与探测器
2020-11-18 v2
摘要
双相氙探测器，正如当前直接探测暗物质实验中所使用的，已在低能区观测到升高的本底电子事件率。虽然该本底以多种方式对探测器性能产生负面影响，但其起源仅被部分研究。在本文中，我们报告了对 LUX 暗物质实验中观测到的电子异常的系统性研究。我们基于其发射强度及其与探测器中先前能量沉积的相关性来表征不同的电子群体。通过在不同实验条件下研究本底，我们确定了主要的发射机制，包括由氙发光引起的光电离和光电效应、液体表面下捕获电子的延迟发射、漂移电子被杂质俘获与释放，以及栅极电子发射。我们讨论了如何在 LUX 和未来基于氙的暗物质实验中抑制这些本底。
引用
@article{arxiv.2004.07791,
title = {Investigation of background electron emission in the LUX detector},
author = {D. S. Akerib and S. Alsum and H. M. Araújo and X. Bai and J. Balajthy and A. Baxter and E. P. Bernard and A. Bernstein and T. P. Biesiadzinski and E. M. Boulton and B. Boxer and P. Brás and S. Burdin and D. Byram and M. C. Carmona-Benitez and C. Chan and J. E. Cutter and L. de Viveiros and E. Druszkiewicz and A. Fan and S. Fiorucci and R. J. Gaitskell and C. Ghag and M. G. D. Gilchriese and C. Gwilliam and C. R. Hall and S. J. Haselschwardt and S. A. Hertel and D. P. Hogan and M. Horn and D. Q. Huang and C. M. Ignarra and R. G. Jacobsen and O. Jahangir and W. Ji and K. Kamdin and K. Kazkaz and D. Khaitan and E. V. Korolkova and S. Kravitz and V. A. Kudryavtsev and E. Leason and B. G. Lenardo and K. T. Lesko and J. Liao and J. Lin and A. Lindote and M. I. Lopes and A. Manalaysay and R. L. Mannino and N. Marangou and D. N. McKinsey and D. M. Mei and M. Moongweluwan and J. A. Morad and A. St. J. Murphy and A. Naylor and C. Nehrkorn and H. N. Nelson and F. Neves and A. Nilima and K. C. Oliver-Mallory and K. J. Palladino and E. K. Pease and Q. Riffard and G. R. C. Rischbieter and C. Rhyne and P. Rossiter and S. Shaw and T. A. Shutt and C. Silva and M. Solmaz and V. N. Solovov and P. Sorensen and T. J. Sumner and M. Szydagis and D. J. Taylor and R. Taylor and W. C. Taylor and B. P. Tennyson and P. A. Terman and D. R. Tiedt and W. H. To and L. Tvrznikova and U. Utku and S. Uvarov and A. Vacheret and V. Velan and R. C. Webb and J. T. White and T. J. Whitis and M. S. Witherell and F. L. H. Wolfs and D. Woodward and J. Xu and C. Zhang},
journal= {arXiv preprint arXiv:2004.07791},
year = {2020}
}
备注
17 pages, 13 figures