MAJORANA DEMONSTRATOR无中微子双贝塔衰变实验状态更新
仪器与探测器
2015-11-03 v1 核实验
摘要
无中微子双贝塔衰变搜寻在确定中微子性质方面起着重要作用，特别是中微子的Majorana或Dirac属性以及中微子质量的绝对尺度。这些搜寻的后果超越中微子物理，对大统一理论和轻子生成有影响。Majorana合作组正在组装一个低本底高纯锗（HPGe）探测器阵列，以搜寻 Ge中的无中微子双贝塔衰变。Majorana Demonstrator目前正在南达科他州Lead的Sanford地下研究设施建设和调试，将包含44 kg（其中30 kg富集 Ge）的HPGe探测器。其主要目标是证明吨级锗实验所需的可扩展性和本底，这通过模块化设计以及感兴趣区域内预计小于3 cnts/tonne-yr的本底实现。该实验目前正使用其首个富集探测器获取数据。
引用
@article{arxiv.1511.00395,
title = {Status Update of the MAJORANA DEMONSTRATOR Neutrinoless Double Beta Decay Experiment},
author = {Julieta Gruszko and Nicolas Abgrall and Isaac Arnquist and Frank Avignone and Alexander Barabash and Fred Bertrand and Adam Bradley and Viktor Brudanin and Matthew Busch and Micah Buuck and Dana Byram and Adam Caldwell and Yuen-Dat Chan and Cabot-Ann Christofferson and Pinghan Chu and Clara Cuesta and Jason Detwiler and Colter Dunagan and Yuri Efremenko and Hiroyasu Ejiri and Steven Elliott and Alfredo Galindo-Uribarri and Tom Gilliss and Graham K. Giovanetti and Johnny Goett and Matthew P. Green and Ian Guinn and Vince Guiseppe and Reyco Henning and Eric Hoppe and Stanley Howard and Mark Howe and Ben Jasinski and Kara Keeter and Mary Kidd and Sergey Konovalov and Richard T. Kouzes and Brian LaFerriere and Jonathan Leon and Jacqueline MacMullin and Ryan Martin and Ralph Massarczyk and Sam Meijer and Susanne Mertens and Christopher OShaughnessy and John Orrell and Alan Poon and David Radford and Jamin Rager and Keith Rielage and R. G. Hamish Robertson and Elisa Romero-Romero and Benjamin Shanks and Mark Shirchenko and Nathan Snyder and Anne-Marie Suriano and David Tedeschi and Jim Trimble and Robert Varner and Sergey Vasilyev and Kai Vetter and Kris Vorren and Brandon White and John F. Wilkerson and Clint Wiseman and Wenqin Xu and E. Yakushev and Chang-Hong Yu and Vladimir Yumatov and Igor Zhitnikov},
journal= {arXiv preprint arXiv:1511.00395},
year = {2015}
}
备注
Presentation at the DPF 2015 Meeting of the American Physical Society Division of Particles and Fields, Ann Arbor, Michigan, August 4-8, 2015. 6 pages. 5 figures