Comparison between experiment and 3-dimentional electromagnetic simulation of monolithic radial transmission lines for Z-pinch

In the design of future Z-pinch driver, the monolithic radial transmission lines (MRTL) were used to combine the outputs of many pulse generators to Z-pinch load. In order to investigate the transmission characteristic of the MRTL with different impedance profiles, 3-dimensional electromagnetic simulation has been performed. From the results of 3-dimensional electromagnetic simulation, it was found that the maximum transmitted power efficiency of hyperbolic line is nearly same as that of exponential line. The hyperbolic line may be the best choice for Z-pinch, because it is much easier in fabrication than the exponential line.