ADC Nonlinearity Correction for the Majorana Demonstrator

Imperfections in analog-to-digital conversion (ADC) cannot be ignored when signal digitization requirements demand both wide dynamic range and high resolution, as is the case for Majorana Demonstrator 76Ge neutrinoless double beta decay search. Enabling experiment's high-resolution spectral analysis efficient pulse shape discrimination required careful measurement correction of ADC nonlinearites. A simple protocol was developed that did not require sophisticated equipment or lengthy data taking campaigns. slope-dependent hysteresis observed characterized. applied to digitized waveforms prior processing reduced differential integral nonlinearites by an order magnitude, eliminating these dominant contributions systematic energy uncertainty at double-beta Q value.