Fig. 4: Representation of the field-reversed configuration (FRC) equilibrium evolution and plasma parameters of shot #147783 as generated by both the Current Tomography and SEQUOIIA methods.
From: Generation of field-reversed configurations via neutral beam injection
a–c Depiction of the FRC's magnetic topology as it is generated. Contours represent the current tomography reconstructions of 2D flux surfaces from magnet currents, magnetic probes, and eddy current model inputs, vertical lines in (d) indicate time of each reconstruction. d Time evolution of amount of trapped flux as determined by current tomography (red), total plasma current (green), and the probability that field-reversal is present at that time (blue), error bars represent the Bayesian inference uncertainty in the calculations. e–h Profiles of magnetic field, electron density, electron temperature, and fast ion and total plasma current density, respectively. They are generated by the SEQUOIIA code from edge magnetic field measurements averaged over the steady-state equilibrium period (21–30 ms) and compared to experimental data and the current tomography method.
