February 2017

Conference Paper

Low Background Signal Readout Electronics for the MAJORANA DEMONSTRATOR

By:
Guinn, I.; Abgrall, N.; Arnquist, I.; Avignone, III, F.; Baldenegro-Barrera, C.; Barabash, A.S.; Bertrand, F.; Bradley, A.; Brudanin, V.; Busch, M.; Buuck, M.; Byram, D.; Caldwell, A.; Chan, Y-D; Christofferson, C.; Cuesta, C; Detwiler, J.; Efremenko, M.; Ejiri, H.; Elliott, S.; Galindo-Uribarri, A.; Gilliss, T.; Giovanetti, G.; Goett, J; Green, M.; Gruszko, J; Guiseppe, V; Henning, R.; Hoppe, E.W.; Howard, S.; Howe, M.; Jasinski, B; Keeter, K.J.; Kidd, M.; Konovalov, S.I.; Kouzes, R.; LaFerriere, B.; Leon, J.; MacMullin, J.; Martin, R.; Meijer, S.; Mertens, S.; Orrell, J.; O'Shaughnessy, C.; Poon, A.W.P.; Radford, D.; Rager, J.; Rielage, K.; Robertson, R.G.H.; Romero-Romero, E.; Shanks, B.; Shirchenko, M.; Snyder, N; Suriano, A.; Tedeschi, D; Trimble, J.; Varner, R.; Vasilyev, S.; Vetter, K.; Vorren, K.; White, B.; Wilkerson, J.; Wiseman, C.; Xu, W.; Yakushev, E.; Yu, C.-H.; Yumatov, V.; Zhitnikov, I
Journal Name:
AIP Conference Proceedings
Page Number:
030001-030001-6
Volume:
1672
Issue Number:
1
Publication Date:
February 2017
Conference Name:
5th International Workshop in Low Radioactivity Techniques
Conference Location:
Seattle, Washington, United States of America
View DOI Listing:
https://doi.org/10.1063/1.4927982

Abstract

The MAJORANA Collaboration will seek neutrinoless double beta decay (0 nu beta beta) in Ge-76 using isotopically enriched p-type point contact (PPC) high purity Germanium (HPGe) detectors. A tonne-scale array of HPGe detectors would require background levels below 1 count/ROI-tonne-year in the 4 keV region of interest (ROI) around the 2039 keV Q-value of the decay. In order to demonstrate the feasibility of such an experiment, the MAJORANA DEMONSTRATOR, a 40 kg HPGe detector array, is being constructed with a background goal of <3 counts/ROI-tonne-year, which is expected to scale down to <1 count/ROI-tonne-year for a tonne-scale experiment. The signal readout electronics, which must be placed in close proximity to the detectors, present a challenge toward reaching this background goal. This talk will discuss the materials and design used to construct signal readout electronics with low enough backgrounds for the MAJORANA DEMONSTRATOR.