CDMS II 硅暗物质探测器中的核反冲能量标度
仪器与探测器
2018-07-31 v2 天体物理仪器与方法
高能物理 - 实验
摘要
低温暗物质搜寻（CDMS II）实验旨在探测与半导体探测器中原子核发生弹性散射的暗物质粒子。由此产生的核反冲能量沉积由电离和声子传感器探测。中子在此类探测器中产生相似的低能核反冲能谱，而大多数其他本底产生电子反冲。核反冲的绝对能量标度是正确解释结果所必需的。CDMS II 硅探测器的能量标度可利用宽谱 Cf 源入射的中子确定，借助硅中子弹性散射截面在反冲（中子）能量近 20（182）keV 处的显著共振。结果表明，核反冲的声子收集效率比同能量电子反冲低 %。将核反冲的电离信号与先前其他组在更高电场下测得者比较表明，运行于 4 V/cm 的 CDMS II 硅探测器对低于 20 keV 的核反冲电离收集效率与 100% 一致，并在更大能量处逐渐降至 100 keV 时的 75%。这些测量对先前发表的 CDMS II 硅结果影响很小。
引用
@article{arxiv.1803.02903,
title = {Nuclear-recoil energy scale in CDMS II silicon dark-matter detectors},
author = {R. Agnese and A. J. Anderson and T. Aramaki and W. Baker and D. Balakishiyeva and S. Banik and D. Barker and R. Basu Thakur and D. A. Bauer and T. Binder and A. Borgland and M. A. Bowles and P. L. Brink and R. Bunker and B. Cabrera and D. O. Caldwell and R. Calkins and C. Cartaro and D. G. Cerdeno and H. Chagani and Y. -Y. Chang and Y. Chen and J. Cooley and B. Cornell and P. Cushman and M. Daal and T. Doughty and E. M. Dragowsky and L. Esteban and S. Fallows and E. Fascione and E. Figueroa-Feliciano and M. Fritts and G. Gerbier and R. Germond and M. Ghaith and G. L. Godfrey and S. R. Golwala and J. Hall and H. R. Harris and D. Holmgren and Z. Hong and L. Hsu and M. E. Huber and V. Iyer and D. Jardin and A. Jastram and C. Jena and M. H. Kelsey and A. Kennedy and A. Kubik and N. A. Kurinsky and A. Leder and E. Lopez Asamar and P. Lukens and D. MacDonell and R. Mahapatra and V. Mandic and N. Mast and K. A. McCarthy and E. H. Miller and N. Mirabolfathi and R. A. Moffatt and B. Mohanty and D. Moore and J. D. Morales Mendoza and J. Nelson and S. M. Oser and K. Page and W. A. Page and R. Partridge and M. Penalver Martinez and M. Pepin and A. Phipps and S. Poudel and M. Pyle and H. Qiu and W. Rau and P. Redl and A. Reisetter and A. Roberts and H. E. Rogers and A. E. Robinson and T. Saab and B. Sadoulet and J. Sander and K. Schneck and R. W. Schnee and S. Scorza and K. Senapati and B. Serfass and D. Speller and P. C. F. Di Stefano and M. Stein and J. Street and H. A. Tanaka and D. Toback and R. Underwood and A. N. Villano and B. von Krosigk and B. Welliver and J. S. Wilson and M. J. Wilson and D. H. Wright and S. Yellin and J. J. Yen and B. A. Young and X. Zhang and X. Zhao},
journal= {arXiv preprint arXiv:1803.02903},
year = {2018}
}
备注
22 pages, 17 figures, 1 table, 1 appendix