Abstract.A novel concept for a structure-based collinear two-beam accelerator is described. By employing a structure composed of multi-harmonic detuned cavities, this new accelerator can provide a high acceleration gradient with a high transformer ratio and a low breakdown probability. An experimental research project, with theoretical and computational support, is being conducted at the Yale University Beam Physics Laboratory. Furthermore, this project will support construction of a unique university-based facility for exploring a range of beam-driven acceleration ideas, including plasma and dielectric wakefield concepts.