As for the Z-800 proposed by Sandia national laboratory

the transmission time of electromagnetic wave in LTD is greater than the rise time of output current

so the traditional method for simulation and optimization of Z-pinch device is not applicable. Thus

we established a whole circuit model of the Z-800 device

including the driving source and the single-layer wire array load

and chose the series transmission line model to reflect the internal electromagnetic wave transmission process for LTD. Based on the full circuit model

the best combination of the mass and the radius of the wire-array is obtained by taking the energy transfer efficiency as an evaluation index

and the impedance profile of the monolithic radial transmission line is optimized. The necessity of using the series transmission line model is also discussed. Finally

the optimal load parameters are obtained

and it is found that exponential line is the best one. It is found that the series transmission line model adopted by LTD has an influence on the design of the monolithic radial transmission line. The optimal design results of Z-800 device have been obtained

and the full circuit simulation and optimal design method of LTD type Z-pinch device have been established

which lays a simulation foundation for the establishment of similar LTD type Z-pinch device in China.