LUX探测器中电场的三维建模
仪器与探测器
2017-11-29 v4 高能物理 - 实验
计算物理
摘要
本文详细介绍了为LUX探测器开发三维电场模型的工作。该探测器在两个阶段采集数据，用于搜寻弱相互作用大质量粒子(WIMP)。第一阶段结束后，在界定探测器活性体积径向边界的聚四氟乙烯(PTFE)面板中产生了随时间变化的非均匀负电荷。这导致探测器内的电场随时间、深度和方位角变化，对向上运动至液面的电子产生了一个径向向内的静电力。为了描绘这种行为，我们按月构建了探测器活性体积的三维电场图。这是通过将COMSOL Multiphysics中构建的模型与定期收集的均匀分布校准数据进行拟合来完成的。建模得到的平均PTFE电荷密度在曝光过程中从-3.6 μC/m²增加到-5.5 μC/m²。根据我们的研究，我们推断电场大小虽有变化，但整个曝光期间电场平均值约200 V/cm保持不变。作为这项工作的成果，变化的电场及其对事例重建和甄别的影响得到了成功建模。
引用
@article{arxiv.1709.00095,
title = {3D Modeling of Electric Fields in the LUX Detector},
author = {LUX Collaboration and D. S. Akerib and S. Alsum and H. M. Araújo and X. Bai and A. J. Bailey and J. Balajthy and P. Beltrame and E. P. Bernard and A. Bernstein and T. P. Biesiadzinski and E. M. Boulton and P. Brás and D. Byram and S. B. Cahn and M. C. Carmona-Benitez and C. Chan and A. Currie and J. E. Cutter and T. J. R. Davison and A. Dobi and E. Druszkiewicz and B. N. Edwards and S. R. Fallon and A. Fan and S. Fiorucci and R. J. Gaitskell and J. Genovesi and C. Ghag and M. G. D. Gilchriese and C. R. Hall and M. Hanhardt 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 W. Ji and K. Kamdin and K. Kazkaz and D. Khaitan and R. Knoche and N. A. Larsen and B. G. Lenardo and K. T. Lesko and A. Lindote and M. I. Lopes and A. Manalaysay and R. L. Mannino and M. F. Marzioni and D. N. McKinsey and D. M. Mei and J. Mock and M. Moongweluwan and J. A. Morad and A. St. J. Murphy and C. Nehrkorn and H. N. Nelson and F. Neves and K. O'Sullivan and K. C. Oliver-Mallory and K. J. Palladino and E. K. Pease and C. Rhyne 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 W. C. Taylor and B. P. Tennyson and P. A. Terman and D. R. Tiedt and W. H. To and M. Tripathi and L. Tvrznikova and S. Uvarov and V. Velan and J. R. Verbus and R. C. Webb and J. T. White and T. J. Whitis and M. S. Witherell and F. L. H. Wolfs and J. Xu and K. Yazdani and S. K. Young and C. Zhang},
journal= {arXiv preprint arXiv:1709.00095},
year = {2017}
}