The MAJORANA DEMONSTRATOR is an experiment constructed to search for Neutrinoless double-beta decay in 76Ge and to demonstrate the feasibility to deploy a large-scale experiment in a phased and modular fashion. It consists of two modular arrays of natural and 76Ge-enriched germanium detectors totalling 44.1 kg, operating on the 4850’ level of the Sanford Underground Research
Facility in Lead, South Dakota, USA. Data acquisition in the commissioning phase began in June 2015, followed by data acquisition with the full detector array in August 2016. The ultralow background and record energy resolution achieved by the MAJORANA DEMONSTRATOR enable a sensitive neutrinoless double-beta decay search, as well as additional searches for physics beyond the Standard Model. I will discuss the design elements that enable these searches, along with our latest results, focusing on the neutrinoless double-beta decay search. I will also discuss the current status and the future plans of the MAJORANA DEMONSTRATOR, as well as the plans for a future tonne-scale 76Ge experiment.
Revised: June 25, 2020 |
Published: August 2, 2019
Citation
Myslik J.W., S.I. Alvis, I.J. Arnquist, F.T. Avignone, A.S. Barabash, C.J. Barton, and F. Bertrand, et al. 2019.Recent results from the Majorana Demonstrator. In Proceedings of the 39th International Conference on High Energy Physics (ICHEP2018), July 4-11, Seoul, South Korea, Paper No. 635.PNNL-SA-139127.doi:10.22323/1.340.0635