Optimization Research of Pulse Power Device Based on Road-Field-Particle Collaborative Simulation

This article explores the coupling relationship between the modified nodal analysis (MNA), the time-domain finite difference (TDFD), and the particle-in-cell (PIC) simulation methods. It proposes a tight coupling method for the road-field-particle collaboration simulation. Subsequently, this method is used to simulate a pulse electron beam generator (EBG) from a linear transformer driver (LTD) cavity transmission line to diode load collaboratively. The vertical distance between the anode and cathode of the diode is optimized by considering its effects on the output waveform, diode impedance, diode beam current, and energy efficiency of the device. Based on the optimization results, it is found that the energy transmission efficiency of the entire device is higher when the vertical distance between the anode and cathode of the diode is 36 mm. Finally, experimental research is conducted on the corresponding experimental platform, and simulation results are validated against the experimental results. These demonstrate the reliability of the road-field-particle collaboration simulation.