We propose an experiment that combines the Lohengrin spectrometer with an additional focal-plane detection system consisting of a digital Bragg Spectrometer and short time-of-flight section. The data obtained will be used to characterize the velocity dependence of the specific energy loss in the fill gas at energies below the Bragg peak. An investigation will be made as to the efficacy of an additional TOF filter as a means to reject contamination for yield measurements at Lohengrin.