Design of spiral pulse-forming line with high voltage and μs long pulse width

The design proposal of spiral pulse-forming line with high voltage and μs pulse width is presented, and the spiral structure is firstly used for the generator with μs-long pulse width and high output voltage. The inner conductor of the pulse-forming line is a spiral line, and the working material is deionized water. The basic parameters of the structure are equivalent capacitance 41.25 nF, equivalent inductance 1.06 μH, characteristic impedance 12.1 Ω, pulse width 1 μs, the maximum charging voltage 1 MV, the maximum storage energy 20.6 kJ, and matched output voltage 500 kV. The design result indicates that, with the same output pulse width, the spiral pulse-forming line is about 1/4 the length of the traditional single metal line.