Large external field coils produce the toroidal field.
In a pinch, such as Zeta, the approach is similar, but the toroidal field is much higher.
Usually solar activity is defined in terms of the Sun's toroidal magnetic field, the field component parallel to the solar equator.
Near the plasma edge, the toroidal magnetic field reverses and the field lines coil in the reverse direction.
Small pulses are added to the power supply currents that drive the toroidal field.
The system measures electron density, toroidal current, poloidal magnetic field, and the spatial profiles of each.
The toroidal field is zero or at least relatively small.
Its superconducting magnets will permit it to generate a strong permanent toroidal magnetic field.
Stabilized pinch machines added a set of external magnets that created a toroidal magnetic field inside the chamber.
To do this, the current in the plasma must be increased in order to generate the toroidal magnetic field of the right magnitude.