MAJORANA DEMONSTRATOR 实验的现状与初步结果
仪器与探测器
2018-04-17 v1 核实验
摘要
无中微子双β衰变搜索在确定中微子的性质、轻子数破坏过程的存在以及有效 Majorana 中微子质量方面发挥着重要作用。MAJORANA 合作组组装了一个高纯 Ge 探测器阵列，以搜索 Ge-76 中的无中微子双β衰变。MAJORANA DEMONSTRATOR 包含 44.1 kg（其中 29.7 kg 富集 Ge-76）的 Ge 探测器，分布在位于美国南达科他州 Lead 的 Sanford 地下研究设施内的低本底屏蔽装置中的两个模块中。DEMONSTRATOR 的初步目标是确立下一代吨级 Ge 实验所需的低本底水平和可扩展性。自 2015 年开始试运行后，第一个探测器模块于 2016 年初开始低本底数据生产。第二个探测器模块于 2016 年 8 月加入，开始整个阵列的运行。我们讨论了初步物理运行的结果，以及完整的 MAJORANA DEMONSTRATOR 实验的现状和物理探索能力。
引用
@article{arxiv.1708.07562,
title = {The Status and Initial Results of the MAJORANA DEMONSTRATOR Experiment},
author = {V. E. Guiseppe and N. Abgrall 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 A. W. Bradley 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. P. Green and J. Gruszko and I. S. Guinn 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 C. O'Shaughnessy and G. Othman and A. W. P. Poon and D. C. Radford and J. Rager and A. L. Reine and K. Rielage and R. G. H. Robertson and N. W. Rouf and B. Shanks and M. Shirchenko and A. M. Suriano and D. Tedeschi and J. E. Trimble 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 C. -H. Yu and V. Yumatov and I. Zhitnikov and B. X. Zhu},
journal= {arXiv preprint arXiv:1708.07562},
year = {2018}
}
备注
Proceedings of the MEDEX'17 meeting (Prague, May 29 - June 2, 2017)