Fullwave coupling to a 3D antenna code using Green's function formulation of wave-particle response.

Using the fullwave code, TORIC ,and the 3D antenna code, TOPICA, we construct a complete linear system for the RF driven plasma. The 3D finite element antenna code, TOPICA, requires an admittance, \textbf{Y}, for the plasma, where $B=Y\bullet E$. In this work TORIC was modified to allow excitation of the (E$\eta $, E$\zeta )$ electric field components at the plasma surface, corresponding to a single poloidal and toroidal mode number combination (m,n). This leads the tensor response: $Y=\left( {{\begin{array}{*{20}c} {Y\eta \eta } \hfill \& {Y\eta \zeta } \hfill \\ {Y\zeta \eta } \hfill \& {Y\zeta \zeta } \hfill \\ \end{array} }} \right)$, where each of the Yn submatrices is Nm in size. It is shown that the admittance matrix is equivalent to a Greens function calculation for the fullwave system and in addition, the net work done in the calculation is on the order of twice a single fullwave calculation. After the admittance calculation is done, the response of a plasma to an antenna driven at a given frequency can be calculated by only running the TOPICA code for a new antenna geometry. In tests of loading, TOPICA has been able reproduce loading of the Alcator D antenna (S12 coefficient accurately.).