Session GP1 - Poster Session IV.
POSTER session, Tuesday afternoon, October 30
Exhibit Hall B,
The magnetic field line tracing code TRIPND(T.E.\ Evans, Proc.\ 18th Conf.\ on Control.\ Fusion and Plasma Phys., Berlin, Germany, Vol.\ 15C, Part~II (European Physical Society, 1991) p.~65.) has been modified to use the axisymmetric equilibrium magnetic fields from an EFIT reconstruction in place of circular equilibria with multi-filament current profile expansions. This adaptation provides realistic plasma current profiles in shaped geometries. A major advantage of this modification is that it allows investigation of magnetic field line trajectories in any device for which an EFIT reconstruction is available. The TRIPND code has been used to study the structure of the magnetic field line topology in circular, limiter tokamaks, including Tore Supra and TFTR and has been benchmarked against the GOURDON code used in Europe for magnetic field line tracing. The new version of the code, called TRIP3D, is used to investigate the sensitivity of various shaped equilibria to non-axisymmetric perturbations such as a shifted F coil or error field correction coils.