Electroproduction of forward protons up toQ2=9.5GeV2

We report new measurements of inclusive proton electroproduction. Data were taken with a hydrogen target at the ($W$, $Q^2$) points (2.2 GeV, 1.2 Ge${\mathrm{V}}^2$), (2.7, 2.0), (2.7, 3.3), (2.7, 6.2), and (2.7, 9.5) and with a deuterium target at (2.2, 1.2), (2.7, 2.0), (2.7, 6.2), and (2.7, 9.5). The invariant structure function is studied as a function of $W$, $Q^2$, $\omega$, and $x^{\prime }$. The data are compared with the predictions of the constituent-interchange model.