Evaluating the Certainty of Beam Motion Corrections in High-rate Asymmetry Measurements

The Calcium Radius Experiment (CREX) is a precise measurement of the parity violating asymmetry (A_PV) in polarized elastic electron-nucleus scattering, which successfully ran in Jefferson Lab's Hall A in 2020. In order to achieve the proposed few % precise A_PV measurement it is necessary to measure and correct for random and helicity correlated motion of the incident electron beam. The experimental collaboration has built upon the experience of previous parity violating electron scattering experiments, allowing for careful evaluation of sources of uncertainty. We will report on the analysis techniques used for correcting the measured beam motion to achieve the precise asymmetry measurement.