MAJORANA DEMONSTRATOR 的进展
仪器与探测器
2015-07-29 v1 核实验
摘要
MAJORANA 合作组正在建造 MAJORANA DEMONSTRATOR，这是一个质量 44 kg（29 kg 76Ge 和 15 kg natGe）的超低本底、模块化高纯锗(HPGe)探测器阵列，用于在 Ge-76 中搜索无中微子双贝塔衰变。下一代吨量级基于 Ge 的无中微子双贝塔衰变搜索将探测倒置质量层级区域的中微子质量标度。MAJORANA DEMONSTRATOR 旨在展示一条前进路径，以在 2039 keV 的 Q 值附近 4 keV 感兴趣区域内实现低于或等于 1 count/tonne/year 的本底率。MAJORANA DEMONSTRATOR 采用模块化实现，以便易于扩展到下一代实验。首先，原型模块已组装；它从 2014 年 7 月到 2015 年 6 月连续取数。其次，包含超过一半总富集探测器和部分天然探测器的模块 1 已组装并正在调试。最后，将完成 MAJORANA DEMONSTRATOR 的模块 2 的组装已在进展中。
引用
@article{arxiv.1507.07612,
title = {Status of the MAJORANA DEMONSTRATOR},
author = {C. Cuesta and N. Abgrall and I. J. Arnquist and F. T. Avignone and C. X. Baldenegro-Barrera and A. S. Barabash and F. E. Bertrand and A. W. Bradley and V. Brudanin and M. Busch and M. Buuck and D. Byram and A. S. Caldwell and Y-D. Chan and C. D. Christofferson and P. -H. Chu and J. A. Detwiler and Yu. Efremenko and H. Ejiri and S. R. Elliott and A. Galindo-Uribarri and T. Gilliss and G. K. Giovanetti and J. Goett and M. P. Green and J. Gruszko and I. S. Guinn and V. E. Guiseppe and R. Henning and E. W. Hoppe and S. Howard and M. A. Howe and B. R. Jasinski and K. J. Keeter and M. F. Kidd and S. I. Konovalov and R. T. Kouzes and B. D. LaFerriere and J. Leon and J. MacMullin and R. D. Martin and R. Massarczyk and S. J. Meijer and S. Mertens and J. L. Orrell and C. O'Shaughnessy and A. W. P. Poon and D. C. Radford and J. Rager and K. Rielage and R. G. H. Robertson and E. Romero-Romero and B. Shanks and M. Shirchenko and N. Snyder 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},
journal= {arXiv preprint arXiv:1507.07612},
year = {2015}
}
备注
4 pages, 3 figures