Energy Calibration of Germanium Detectors for the MAJORANA DEMONSTRATOR

Abstract

The MAJORANA DEMONSTRATOR was a search for neutrinoless double-beta decay ($0\nu \beta \beta$) in the ${}^{76}$Ge isotope. It was staged at the 4850-foot level of the Sanford Underground Research Facility (SURF) in Lead, SD. The experiment consisted of 58 germanium detectors housed in a low background shield and was calibrated once per week by deploying a ${}^{228}$Th line source for 1 to 2 hours. The energy scale calibration determination for the detector array was automated using custom analysis tools. We describe the offline procedure for calibration of the Demonstrator germanium detectors, including the simultaneous fitting of multiple spectral peaks, estimation of energy scale uncertainties, and the automation of the calibration procedure.

References in corpus (21)

• MCMC using Hamiltonian dynamics
• Double Beta Decay, Majorana Neutrinos, and Neutrino Mass
• Theory of neutrinoless double beta decay
• Final Results of GERDA on the Search for Neutrinoless Double-$\beta$ Decay
• Large-Mass Ultra-Low Noise Germanium Detectors: Performance and Applications in Neutrino and Astroparticle Physics
• Search for Neutrinoless Double-Beta Decay with the Complete EXO-200 Dataset
• Search for the Majorana Nature of Neutrinos in the Inverted Mass Ordering Region with KamLAND-Zen
• Improved Limit on Neutrinoless Double-Beta Decay in ${}^{130}$Te with CUORE
• Search for Zero-Neutrino Double Beta Decay in 76Ge with the Majorana Demonstrator
• NEXO: Neutrinoless double beta decay search beyond $10^{28}$ year half-life sensitivity
• A Search for Neutrinoless Double-Beta Decay in ${}^{76}$Ge with 26 kg-yr of Exposure from the MAJORANA DEMONSTRATOR
• The Majorana Demonstrator Radioassay Program
• Final Result of the MAJORANA DEMONSTRATOR's Search for Neutrinoless Double-$\beta$ Decay in ${}^{76}$Ge
• New limits on Bosonic Dark Matter, Solar Axions, Pauli Exclusion Principle Violation, and Electron Decay from the Majorana Demonstrator
• Multi-site event discrimination for the MAJORANA DEMONSTRATOR
• The Processing of Enriched Germanium for the MAJORANA DEMONSTRATOR and R&D for a Possible Future Ton-Scale Ge-76 Double-Beta Decay Experiment
• The Majorana Demonstrator calibration system
• $\alpha$-event Characterization and Rejection in Point-Contact HPGe Detectors
• The MAJORANA DEMONSTRATOR Readout Electronics System
• ADC Nonlinearity Correction for the MAJORANA DEMONSTRATOR
• Charge Trapping and Energy Performance of the MAJORANA DEMONSTRATOR

Cited by in corpus (4)

• Exotic dark matter search with the Majorana Demonstrator
• Search for charge nonconservation and Pauli exclusion principle violation with the Majorana Demonstrator
• Final Results of the MAJORANA DEMONSTRATOR's Search for Double-Beta Decay of ${}^{76}$Ge to Excited States of ${}^{76}$Se
• Rare multi-nucleon decays with the full data sets of the Majorana Demonstrator