Modeling and simulation of vacuum THz source

A suite of codes, named Microwave Tube Simulator Suite (MTSS), will be presented. MTSS is a full-featured tightly integrated software package for vacuum electron devices analysis and design. It includes a commercial grade user interface and three physics simulators. The Electron Optics Simulator (EOS) is a finite-element two dimensional and three dimensional electrostatic steady-state beam trajectory code that has been used to design beam optics including electron gun and collector. High Frequency Circuit Simulator (HFCS) is a full three dimensional finite-element computational electromagnetic code that aims to get the accurate electromagnetic wave character spreading in high frequency structures, such as dispersion, coupling impedance and attenuation. Beam Wave Interaction Simulator (BWIS) is a large-signal simulation code for helix, coupled-cavity and folded waveguide traveling wave tubes.