双相 TPC 中液氩的电致发光脉冲形状与电子扩散测量
仪器与探测器
2018-07-24 v2
摘要
我们报道了使用 DarkSide-50 双相时间投影室对液氩中纵向扩散常数的测量。该测量在 100 V/cm、150 V/cm 和 200 V/cm 的漂移电场下，利用来自大气氩的高统计量 Ar 衰变进行。我们推导了一个表达式来描述双相 TPC 中电致发光信号 (S2) 的脉冲形状。将推导出的 S2 脉冲形状拟合到来自 TPC 最上部的事件，以刻画信号的径向依赖关系。结果作为纵向扩散常数 DL 测量的输入，我们发现对于 200V/cm 漂移电场和 2.8kV/cm 提取电场下选取的 140keV 电子反冲事件，DL 为 (4.12 0.04) cm/s。为研究我们测量的系统误差，我们考察了不同事件能量、场强和探测器体积的数据集，得出扩散常数的加权平均值为 (4.09 0.09) cm /s。观测到的纵向扩散常数具有能量依赖性，且在所研究的能量范围内结果系统性地低于文献中的其他结果。
引用
@article{arxiv.1802.01427,
title = {Electroluminescence pulse shape and electron diffusion in liquid argon measured in a dual-phase TPC},
author = {P. Agnes and I. F. M. Albuquerque and T. Alexander and A. K. Alton and D. M. Asner and M. P. Ave and H. O. Back and B. Baldin and G. Batignani and K. Biery and V. Bocci and G. Bonfini and W. Bonivento and M. Bossa and B. Bottino and F. Budano and S. Bussino and M. Cadeddu and M. Cadoni and F. Calaprice and A. Caminata and N. Canci and A. Candela and M. Caravati and M. Cariello and M. Carlini and M. Carpinelli and S. Catalanotti and V. Cataudella and P. Cavalcante and S. Cavuoti and A. Chepurnov and C. Cicalo and A. G. Cocco and G. Covone and D. D'Angelo and M. D'Incecco and D. D'Urso and S. Davini and A. De Candia and S. De Cecco and M. De Deo and G. De Filippis and G. De Rosa and M. De Vincenzi and P. Demontis and A. V. Derbin and A. Devoto and F. Di Eusanio and G. Di Pietro and C. Dionisi and E. Edkins and A. Fan and G. Fiorillo and K. Fomenko and D. Franco and F. Gabriele and A. Gabrieli and C. Galbiati and S. Giagu and C. Giganti and G. K. Giovanetti and A. M. Goretti and F. Granato and M. Gromov and M. Guan and Y. Guardinbcerri and M. Gulino and B. R. Hackett and K. Herner and D. Hughes and P. Humble and E. V. Hungerford and An. Ianni and I. James and T. N. Johnson and K. Keeter and C. L. Kendziora and G. Koh and D. Korablev and G. Korga and A. Kubankin and M. Kuss and X. Li and M. Lissia and B. Loer and G. Longo and Y. Ma and A. A. Machado and I. N. Machulin and A. Mandarano and S. M. Mari and J. Maricic and C. J. Martoff and A. Messina and P. D. Meyers and R. Milincic and A. Monte and M. Morrocchi and B. J. Mount and V. N. Muratova and P. Musico and A. Navrer Agasson and A. Nozdrina and A. Oleinik and M. Orsini and F. Ortica and L. Pagani and M. Pallavicini and L. Pandola and E. Pantic and E. Paoloni and F. Pazzona and K. Pelczar and N. Pelliccia and A. Pocar and S. Pordes and H. Qian and M. Razeti and A. Razeto and B. Reinhold and A. L. Renshaw and M. Rescigno and Q. Riffard and A. Romani and B. Rossi and N. Rossi and D. Sablone and O. Samoylov and W. Sands and S. Sanfilippo and M. Sant and C. Savarese and B. Schlitzer and E. Segreto and D. A. Semenov and A. Sheshukov and P. N. Singh and M. D. Skorokhvatov and O. Smirnov and A. Sotnikov and C. Stanford and G. B. Suffritti and Y. Suvorov and R. Tartaglia and G. Testera and A. Tonazzo and P. Trinchese and E. V. Unzhakov and M. Verducci and A. Vishneva and B. Vogelaar and M. Wada and T. J. Waldrop and S. Walker and H. Wang and Y. Wang and A. W. Watson and S. Westerdale and M. M. Wojcik and X. Xiang and X. Xiao and C. Yang and Z. Ye and C. Zhu and G. Zuzel},
journal= {arXiv preprint arXiv:1802.01427},
year = {2018}
}