System, devices and methods for electron beam for plasma heating

A long-pulse, high power electron beam with plasma emitters for plasma heating. The electron beam includes an arc plasma source, an electron optical system comprised of the system of acceleration grids, a beamline which includes a magnetic system to provide effective e-beam formation, transport and, ultimately, injection into a plasma confinement device of interest, a plasma generator coil, a plasma emitter coil, a lens coil, and a beam transport coil.