A method of inductively energizing a plasma in a confinement chamber (110) is disclosed. A gas is introduced to the confinement chamber (110) and energized to form a plasma having a toroidal current defined by rotation of the plasma within the confinement chamber (110). Magnetic flux is injected into the confinement chamber (110) by applying current through conductive coils (126) of a helicity injector (120) with ends fluidly connected to the confinement chamber (110). Voltage (122) is applied across the ends of the helicity injector (120) to create edge currents around an outer surface of the plasma in the confinement chamber (110) and asymmetric magnetic perturbations across the plasma sufficient to couple adjacent zonal flows. Magnetic flux (126) is injected and voltage (122) is applied across the helicity injector periodically and in phase at a frequency that exceeds 5.8 kilohertz. Gas is removed from the confinement chamber (110) to achieve a plasma density sufficient for separatrix formation.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
 This invention was made with government support under DE-FG02-96ER54361 awarded by the Department of Energy. The government has certain rights in the invention.