Design of the linear transformer driver stage prototype for Z-pinch driver

The design of the linear transformer driver(LTD) stage prototype for Z-pinch driver is introduced. The stage consists of 32 identical bricks connected in parallel. Each brick contains two 100 kV/100 nF capacitors, a 200 kV multi-gap switch, and the output connector that transfer the energy to the resistive load. 32 switches are triggered by 4 high voltage trigger cables (8 switches for each cable). The outer diameter of the stage is about 2.9 m, at a length of 27 cm according to the design. The simulation results show that the output current can be up to 1.0 MA in 118.6 ns rise time at the charge voltage of 90 kV. As a result, the stage can deliver 995 kA current pulse with the rise time of 120.8 ns and FWHM of 335.2 ns into a 90 m resistive load in the preliminary experiment.