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The discrepancy between proton electromagnetic form factors extracted usingunpolarized and polarized scattering data is believed to be a consequence oftwo-photon exchange (TPE) effects. However, the calculations of TPE correctionshave significant model dependence, and there is limited direct experimentalevidence for such corrections. We present the results of a new experimentaltechnique for making direct $e^\pm p$ comparisons, which has the potential tomake precise measurements over a broad range in $Q^2$ and scattering angles. Weuse the Jefferson Lab electron beam and the Hall B photon tagger to generate aclean but untagged photon beam. The photon beam impinges on a converter foil togenerate a mixed beam of electrons, positrons, and photons. A chicane is usedto separate and recombine the electron and positron beams while the photon beamis stopped by a photon blocker. This provides a combined electron and positronbeam, with energies from 0.5 to 3.2 GeV, which impinges on a liquid hydrogentarget. The large acceptance CLAS detector is used to identify and reconstructelastic scattering events, determining both the initial lepton energy and thesign of the scattered lepton. The data were collected in two days with aprimary electron beam energy of only 3.3 GeV, limiting the data from this runto smaller values of $Q^2$ and scattering angle. Nonetheless, this measurementyields a data sample for $e^\pm p$ with statistics comparable to those of thebest previous measurements. We have shown that we can cleanly identify elasticscattering events and correct for the difference in acceptance for electron andpositron scattering. The final ratio of positron to electron scattering:$R=1.027\pm0.005\pm0.05$ for $<Q^2>=0.206$ GeV$^2$ and $0.830\leq \epsilon\leq0.943$.

Demonstration of a novel technique to measure two-photon exchange effects in elastic $e^\pm p$ scattering