[en] This chapter describes the design of the pulse power system used to generate the electron beam for the Austin Research Associates Collective Ion Accelerator. Discusses the methods used to filter out high-frequency ripple generated in the Marx generator and switches of a 3 MeV electron beam generator with an output pulse having a 200 ns flat top. Finds that a very low output pulse ripple of less than 0.5% of the peak amplitude can be obtained through the application of conventional filter theory to a distributed, transmission-line structure. Computer analysis of this type of system indicates that short line sections with an impedance significantly lower than the nominal line impedance of the pulseline could be effectively used to replace the capacitance of a simple LC low-pass filter. The filter circuit is combined with impedance mismatching and an LR integration at the Marx/transfer line connection to achieve an overall attenuation that meets system requirements