V3FIT: Three-Dimensional MHD Equilibrium Reconstruction

V3FIT is a three-dimensional MHD equilibrium reconstruction code, based on the VMEC equilibrium code. V3FIT is a general and easily extensible reconstruction code, designed so that information from many types of diagnostics can be used to determine the equilibrium. The first diagnostics included in V3FIT were magnetic diagnostics. We will present results on reconstruction using microwave interferometers and polarimeters as diagnostics. We will also show comparisons between V3FIT and EFIT reconstructions using experimental data from the DIII-D tokamak. This work is supported in part by US DOE Grant DE-FG02-03ER54692B and a US DOE Postdoctoral Research Fellowship.