  Primary challenges for current and future precision neutrino experiments
using liquid argon time projection chambers (LArTPCs) include understanding
detector effects and quantifying the associated systematic uncertainties. This
paper presents a novel technique for assessing and propagating LArTPC
detector-related systematic uncertainties. The technique makes modifications to
simulation waveforms based on a parameterization of observed differences in
ionization signals from the TPC between data and simulation, while remaining
insensitive to the details of the detector model. The modifications are then
used to quantify the systematic differences in low- and high-level
reconstructed quantities. This approach could be applied to future LArTPC
detectors, such as those used in SBN and DUNE.
