Majorana 验证装置状态与初步结果
核实验
2018-06-13 v1 仪器与探测器
摘要
Majorana 合作组正在使用高纯锗探测器阵列来搜寻 76Ge 中的无中微子双贝塔衰变。搜寻无中微子双贝塔衰变被理解为检验中微子 Majorana 性质的唯一可行实验方法。观测到该衰变将意味着轻子数破坏、中微子本质上是 Majorana 粒子，并提供关于中微子质量的信息。Majorana 验证装置包含 44.1 kg 的 p 型点接触锗探测器（其中 29.7 kg 富集 76Ge），外围为低本底屏蔽系统。该实验实现了将 raw Ge 材料转化为探测器的高效率，以及在 Q 处 2.5 keV FWHM 的空前探测器能量分辨率。Majorana 合作组于 2016 年开始获取物理数据。本文总结了验证装置的关键建造方面，并展示了初始数据的初步结果。
引用
@article{arxiv.1803.11220,
title = {The Majorana Demonstrator Status and Preliminary Results},
author = {C. -H. Yu and S. I. Alvis and I. J. Arnquist and F. T. Avignone and A. S. Barabash and C. J. Barton and F. E. Bertrand and T. Bode and V. Brudanin and M. Busch and M. Buuck and T. S. Caldwell and Y. -D. Chan and C. D. Christofferson and P. -H. Chu and C. Cuesta and J. A. Detwiler and C. Dunagan and Yu Efremenko and H. Ejiri and S. R. Elliott and T. Gilliss and G. K. Giovanetti and M. Green and J. Gruszko and I. S. Guinn and V. E. Guiseppe and C. R. Haufe and L. Hehn and R. Henning and E. W. Hoppe and M. A. Howe and K. J. Keeter and M. F. Kidd and S. I. Konovalov and R. T. Kouzes and A. M. Lopez and R. D. Martin and R. Massarczyk and S. J. Meijer and S. Mertens and J. Myslik and G. Othman and W. Pettus and A. W. P. Poon and D. C. Radford and J. Rager and A. L. Reine and K. Rielage and N. W. Ruff and B. Shanks and M. Shirchenko and A. M. Suriano and D. Tedeschi and R. L. Varner and S. Vasilyev and K. Vetter and K. Vorren and B. R. White and J. F. Wilkerson and C. Wiseman and W. Xu and E. Yakushev and V. Yumatov and I. Zhitnikov and B. Z. Zhu},
journal= {arXiv preprint arXiv:1803.11220},
year = {2018}
}
备注
5 pages, 2 figures. Proceeding for the "16th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (CGS16)", 18-22 September 2017