The Deep Underground Neutrino Experiment (DUNE) will push forward the frontiers of our understanding of the physics governing neutrino interactions and oscillations. The performance of this experiment relies heavily upon a functional and well-calibrated system of near detectors (ND), comprised of three independent detectors. Of these three detectors, the upstream Liquid Argon Time Projection Chamber (LArTPC) is considered to be the primary target due to its precision and similarity to the DUNE far detector units. The ND LArTPC detector will utilize novel detection techniques such as a highly-segmented drift volume with modularized charge and light readout systems, a pixelated charge readout system for unabmiguous 3D reconstruction of charge, and integrated field shaping devices. These technologies, in combination with the high-rate environment of the Long Baseline Neutrino Facility (LBNF) beam necessitate careful understanding of the drift field and electronics response over time.This thesis describes the design of the integrated near detector program, including the Precision Reaction-Independent Spectrum Measurement (PRISM) system for high-precision measurement of the unoscillated neutrino flux at the beam source site. This system allows for motion of the two upstream ND components in the direction transverse to the beam source, allowing for sampling of off-axis flux, granting access to the angular dependence of beam production parameters, and enabling interaction model independent measurement of neutrino oscillation parameters. This thesis will also discuss a program for spatial calibration of the LArTPC component of the near detector system (ND-LAr, or ArgonCube) using both cosmic rays and a dedicated laser photoelectric charge injection system. Included is an example of this calibration scheme in the Module-0 and Module-1 prototype detectors and an analysis of the findings of these measurements.
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