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BEAM MANIPULATION AND ACCELERATION WITH DIELECTRIC-LINED WAVEGUIDES François Lemery, Ph.D. Department of Physics Northern Illinois University, 2015 Philippe Piot, Director The development of next-generation TeV+ electron accelerators will require either immense footprints based on conventional acceleraton techniques or the development of new higher–gradient acceleration methods. One possible alternative is beam-driven acceleration in a high-impedance medium such as a dielectric-lined-waveguide (DLW), where a highcharge bunch passes through a DLW and can excite gradients on the order of GV/m. An important characteristic of this acceleration class is the transformer ratio which characterizes the energy transfer of the scheme. This dissertation discusses alternative methods to improve the transformer ratio for beam-driven acceleration and also considers the use of DLWs for beam manipulation at low energy. NORTHERN ILLINOIS UNIVERSITY DE KALB, ILLINOIS

Beam manipulation and acceleration with Dielectric-Lined Waveguides