The Majorana Low-noise Low-background Front-end Electronics
- Lawrence Berkeley National Laboratory (LBNL)
- Pacific Northwest National Laboratory (PNNL)
- ORNL
- Institute of Theoretical & Experimental Physics (ITEP), Moscow, Russia
The MAJORANA DEMONSTRATOR will search for the neutrinoless double beta decay (ββ(0ν)) of the isotope 76Ge with a mixed array of enriched and natural germanium detectors. In view of the next generation of tonne-scale germanium-based ββ(0ν)-decay searches, a major goal of the MAJORANA DEMONSTRATOR is to demonstrate a path forward to achieving a background rate at or below 1 cnt/(ROI-t-y) in the 4 keV region of interest (ROI) around the 2039-keV Q-value of the 76Ge ββ(0ν)-decay. Such a requirement on the background level significantly constrains the design of the readout electronics, which is further driven by noise and energy resolution performances. We present here the low-noise low- background front-end electronics developed for the low-capacitance p-type point contact (P-PC) germanium detectors of the MAJORANA DEMONSTRATOR. This resistive-feedback front-end, specifically designed to have low mass, is fabricated on a radioassayed fused-silica substrate where the feedback resistor consists of a sputtered thin film of high purity amorphous germanium and the feedback capacitor is based on the capacitance between gold conductive traces.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- DOE Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1481652
- Resource Relation:
- Journal Volume: 61; Conference: 13th International Conference on Topics in Astroparticle and Underground Physics (TAUP) - Monterety Peninsula, California, United States of America - 9/8/2013 8:00:00 AM-9/13/2013 8:00:00 AM
- Country of Publication:
- United States
- Language:
- English
The MAJORANA DEMONSTRATOR Neutrinoless Double-Beta Decay Experiment
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journal | January 2014 |
ADC Nonlinearity Correction for the Majorana Demonstrator
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journal | March 2021 |
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