Taylor state equilibrium field lines calculated for one injector in HIT-SI are shown below.
Figure a shows the injector only fields.
Figure b shows the equilibrium with a ratio of spheromak to injector current of 1.5. A separatrix has formed where closed flux has formed indicating the development of a spheromak.
At a ratio of 5, figure c shows a symmetric, well-defined region of closed flux.
Simulations using the NIMROD code are also being run to investigate HIT-SI plasmas.