Geometry and Modeling of Single ITER Antenna Module*

We present FDTD simulations of a single ITER antenna module in cold-test, and in the vicinity of representative edge plasma. We cover the construction of the module geometry from both CAD data and from parametric representation. Simulations with plasma will also look at RF sheath potentials using the time- domain sheath sub-grid model, as this work provides the first practical full-scale application of this model. At this stage, we push the simulation volume as large as possible for both office-cluster scale and super-computing scale platforms, and explore the feasibility of extending the computations to a partial or full ensemble of modules. This work also includes the creation of post-analysis and visualization scripts targeted for the large datasets implied by these computations, which will also form the core analysis tools to provide predicted figures-of-merit, such as impedance loading, peak field strengths, and areas of significant sheath voltage. We present a summary of progress in this area as well.