Plasma heating and current drive systems for the fusion ignition research experiment (FIRE)

FIRE is a high-field, burning-plasma tokamak that is being studied as a possible option for future fusion research. Preliminary parameters for this machine are R0=2.14 m, a=0.595 m, B0=10 T, and Ip=7.7 MA. Magnetic field coils are to be made of copper and pre-cooled with LN2 before each shot. The flat-top pulse length desired is ≥20 s. Ion cyclotron (IC) and lower hybrid rf systems will be used for heating and current drive. Present specifications call for 20 MW of IC heating power, with an additional 10 MW of IC power or 20 MW of lower hybrid power as upgrade options.