Status Update of the MAJORANA DEMONSTRATOR Neutrinoless Double Beta Decay Experiment
Abstract
Neutrinoless double beta decay searches play a major role in determining neutrino properties, in particular the Majorana or Dirac nature of the neutrino and the absolute scale of the neutrino mass. The consequences of these searches go beyond neutrino physics, with implications for Grand Unification and leptogenesis. The \textsc{Majorana} Collaboration is assembling a low-background array of high purity Germanium (HPGe) detectors to search for neutrinoless double-beta decay in Ge. The \textsc{Majorana Demonstrator}, which is currently being constructed and commissioned at the Sanford Underground Research Facility in Lead, South Dakota, will contain 44 kg (30 kg enriched in Ge) of HPGe detectors. Its primary goal is to demonstrate the scalability and background required for a tonne-scale Ge experiment. This is accomplished via a modular design and projected background of less than 3 cnts/tonne-yr in the region of interest. The experiment is currently taking data with the first of its enriched detectors.
Keywords
Cite
@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}
}
Comments
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