Compton polarimetryJefferson LabThe Q Weak experiment, scheduled to run in 2010–2012 in HallC at JeffersonLab, will measure the parity-violating asymmetry in elastic electron-proton scattering at 1.1GeV to determine the weak charge of the proton, $Q^p_{m Weak} = 1 - 4 \\sin^2 heta_W$...