Low background signal readout electronics for the MAJORANA DEMONSTRATOR

Journal Article · Mon Aug 17 04:00:00 EDT 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4927982· OSTI ID:22488700

Guinn, I.; Buuck, M.; Cuesta, C.; Detwiler, J. A.; Gruszko, J.; Leon, J.; Robertson, R. G. H. ^[1]; Abgrall, N.; Bradley, A. W.; Chan, Y-D.; Mertens, S.; Poon, A. W. P. ^[2]; Arnquist, I. J.; Hoppe, E. W.; Kouzes, R. T.; LaFerriere, B. D.; Orrell, J. L. ^[3]; Avignone, F. T. ^[4]; Baldenegro-Barrera, C. X.; Bertrand, F. E. ^[5] ; others, and

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1. Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, WA (United States)
2. Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA (United States)
3. Pacific Northwest National Laboratory, Richland, WA (United States)
4. Department of Physics and Astronomy, University of South Carolina, Columbia, SC (United States)
5. Oak Ridge National Laboratory, Oak Ridge, TN (United States)

The MAJORANA Collaboration will seek neutrinoless double beta decay (0νββ) in {sup 76}Ge 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 count/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.

• OSTI ID: 22488700
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1672; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
DESIGN
DOUBLE BETA DECAY
EXPERIMENT PLANNING
GERMANIUM 76
HIGH-PURITY GE DETECTORS
KEV RANGE
P-TYPE CONDUCTORS
Q-VALUE
READOUT SYSTEMS