Visualization of wake fields in 3-D

Rapid advancements in computing capability, such as supercomputers, are enabling scientists and engineers to use numerical modeling tools to analyze large scale problems of volumetric complexity never considered before, and which are impossible to solve analytically. The Finite Difference Time Domain method (FDTD) is widely used to model different electromagnetic interaction problems. The large amount of information obtained from 3-D simulations makes global data analysis difficult. Visualization allows this analysis to be done in a more efficient manner. This technique is implemented here, using the FDTD code. For this purpose, the authors have generated a short video to observe the 3-D time evolution of the wake fields, as a beam travelling in a cylindrical pipe encounters two structures: a cylindrically shaped pillbox cavity with and without parallel flat plates