Comparison of ``integrating'' and ``tracking'' modes of operation in the Qweak experiment

The Qweak experiment the first direct measurement of the proton's weak charge $Q_W^p$, has recently completed data collection at Jefferson Lab. Polarized, 1.165~GeV electrons were scattered from protons and focused onto an array of large (2\,m$\times$0.18\,m) fused-silica Cherenkov detectors. We have proposed to measure the parity-violating asymmetry associated with $Q_W^p$ to a precision of 5~ppb. To meet this statistical requirement, the bulk of the data were collected using ``integrating'' electronics (with typical event rates $\sim$800\,MHz per detector). However, the observed asymmetry also depends on the distribution of momentum transfer $Q^2$ accepted by the experiment. Measurements of $Q^2$ were made by inserting wire chamber detectors --- but only with the beam current reduced by three to six orders of magnitude. For these ``tracking'' measurements, the main detectors were connected to electronics able to resolve single events. As a bridge between integrating and tracking modes, a small (1\,cm$\times$1\,cm) Cherenkov detector on a motion stage had freedom to scan over one of the large Cherenkov detectors; the small size permitted use of the same electronics at all beam currents. In this talk I will discuss the consistency of results from these various modes of operation.