用于 PROSPECT 实验的分段式 ^6Li 负载液体闪烁体探测器的性能
仪器与探测器
2018-07-02 v2 高能物理 - 实验
摘要
本文描述了为 PROSPECT（精密反应堆振荡与能谱）实验设计并运行的一个 50 升、双分段 ^6Li 负载液体闪烁体探测器的设计与性能，其作为该实验的原型。该双分段探测器依据实验设计规格建造。它具有低质量光学隔离器、集成源与光学校准系统，以及兼容 PROSPECT 所开发 ^6Li 掺杂闪烁体的材料。我们展示了 850±20 PE/MeV 的高光收集量、1 MeV 处 σ = 4.0±0.2% 的能量分辨率，以及对低 dE/dx（电子反冲）与高 dE/dx（核反冲）能量沉积的高效脉冲形状甄别。在各分段中测得有效闪烁衰减长度为 85±3 cm。闪烁体中 0.1% 质量浓度的 ^6Li 导致测得中子俘获时间 τ = 42.8±0.2 μs。文中还讨论了闪烁体的长期稳定性。该探测器响应满足实现 PROSPECT 物理目标所需标准，并展现出可应用于快中子探测的特性。
引用
@article{arxiv.1805.09245,
title = {Performance of a segmented $^{6}$Li-loaded liquid scintillator detector for the PROSPECT experiment},
author = {J. Ashenfelter and A. B. Balantekin and H. R. Band and C. D. Bass and D. E. Bergeron and D. Berish and N. S. Bowden and J. P. Brodsky and C. D. Bryan and A. Bykadorova Telles and J. J. Cherwinka and T. Classen and K. Commeford and A. Conant and D. Davee and G. Deichert and M. V. Diwan and M. J. Dolinski and A. Erickson and B. T. Foust and J. K. Gaison and A. Galindo-Uribarri and K. Gilje and B. Hackett and K. Han and S. Hans and A. Hansell and K. M. Heeger and B. Heffron and J. Insler and D. E. Jaffe and D. Jones and O. Kyzylova and C. E. Lane and T. J. Langford and J. LaRosa and B. R. Littlejohn and F. Lopez and D. A. Martinez Caicedo and J. Matta and R. D. McKeown and M. P. Mendenhall and J. Minock and P. E. Mueller and H. P. Mumm and J. Napolitano and R. Neilson and J. A. Nikkel and D. Norcini and S. Nour and D. A. Pushin and X. Qian and E. Romero-Romero and R. Rosero and P. T. Surukuchi and C. Trinh and M. A. Tyra and J. M. Wagner and C. White and J. Wilhelmi and T. Wise and M. Yeh and Y. -R. Yen and A. Zhang and C. Zhang and X. Zhang},
journal= {arXiv preprint arXiv:1805.09245},
year = {2018}
}
备注
16 pages, 13 figures; minor edits to design detail and references