The MAJORANA DEMONSTRATOR Readout Electronics System
N. Abgrall, M. Amman, I.J. Arnquist, F.T. Avignone III, A.S. Barabash,, C.J. Barton, P.J. Barton, F.E. Bertrand, K.H. Bhimani, B. Bos, A.W. Bradley,, T.H. Burritt, M. Busch, M. Buuck, T.S. Caldwell, Y-D. Chan, C.D., Christofferson, P.-H. Chu, M.L. Clark, R.J. Cooper, C. Cuesta
TL;DR
This paper details the design and implementation of the low-noise, low-background readout electronics system for the MAJORANA DEMONSTRATOR, aimed at detecting neutrinoless double-beta decay in germanium detectors.
Contribution
It provides a comprehensive description of the entire readout electronics system, including components, grounding, and performance, tailored for low-background physics experiments.
Findings
Achieved low electronic noise in detector readout
Minimized radioactive backgrounds with specialized materials
Demonstrated effective spectroscopic performance
Abstract
The MAJORANA DEMONSTRATOR comprises two arrays of high-purity germanium detectors constructed to search for neutrinoless double-beta decay in 76-Ge and other physics beyond the Standard Model. Its readout electronics were designed to have low electronic noise, and radioactive backgrounds were minimized by using low-mass components and low-radioactivity materials near the detectors. This paper provides a description of all components of the MAJORANA DEMONSTRATOR readout electronics, spanning the front-end electronics and internal cabling, back-end electronics, digitizer, and power supplies, along with the grounding scheme. The spectroscopic performance achieved with these readout electronics is also demonstrated.
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