Status of the MAJORANA DEMONSTRATOR

/ Authors

C. Cuesta, N. Abgrall, I. Arnquist, F. Avignone, C. X. Baldenegro-Barrera, A. Barabash, F. Bertrand, A. Bradley, V. Brudanin, M. Busch

and 60 more authors

M. Buuck, D. Byram, A. Caldwell, Y. Chan, C. Christofferson, P. Chu, J. Detwiler, Y. Efremenko, H. Ejiri, S. Elliott, A. Galindo-Uribarri, T. Gilliss, G. Giovanetti, J. Goett, M. P. Green, J. Gruszko, I. Guinn, V. Guiseppe, R. Henning, E. Hoppe, S. Howard, M. Howe, B. Jasinski, K. Keeter, M. Kidd, S. Konovalov, R. Kouzes, B. LaFerriere, J. Leon, J. MacMullin, R. Martin, R. Massarczyk, S. Meijer, S. Mertens, J. Orrell, C. O'Shaughnessy, A. Poon, D. Radford, J. Rager, K. Rielage, R. Robertson, E. Romero-Romero, B. Shanks, M. Shirchenko, N. Snyder, A. Suriano, D. Tedeschi, J. Trimble, R. Varner, S. Vasilyev, K. Vetter, K. Vorren, B. White, J. Wilkerson, C. Wiseman, W. Xu, E. Yakushev, C. -. Yu, V. Yumatov, I. Zhitnikov

/ Abstract

The MAJORANA Collaboration is constructing the MAJORANA DEMONSTRATOR, an ultralow background, 40-kg modular high purity Ge (HPGe) detector array to search for neutrinoless double-beta decay (0νββ-decay) in 76Ge. The goal of the experiment is to demonstrate a background rate at or below 3 counts/(t-y) in the 4 keV region of interest (ROI) around the 2039 keV Q-value for 76Ge 0νββ-decay. In this paper, the status of the MAJORANA DEMONSTRATOR, including its design and measurements of properties of the HPGe crystals is presented.

Journal: Physics of Particles and Nuclei

DOI: 10.1134/S1063779616060253