The Status and Initial Results of the MAJORANA DEMONSTRATOR Experiment
Abstract
Neutrinoless double-beta decay searches play a major role in determining the nature of neutrinos, the existence of a lepton violating process, and the effective Majorana neutrino mass. The MAJORANA Collaboration assembled an array of high purity Ge detectors to search for neutrinoless double-beta decay in Ge-76. The MAJORANA DEMONSTRATOR is comprised of 44.1 kg (29.7 kg enriched in Ge-76) of Ge detectors divided between two modules contained in a low-background shield at the Sanford Underground Research Facility in Lead, South Dakota, USA. The initial goals of the DEMONSTRATOR are to establish the required background and scalability of a Ge-based next-generation ton-scale experiment. Following a commissioning run that started in 2015, the first detector module started low-background data production in early 2016. The second detector module was added in August 2016 to begin operation of the entire array. We discuss results of the initial physics runs, as well as the status and physics reach of the full MAJORANA DEMONSTRATOR experiment.
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Cite
@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}
}
Comments
Proceedings of the MEDEX'17 meeting (Prague, May 29 - June 2, 2017)