Engineering overview of the Fusion Ignition Research Experiment (FIRE)

FIRE is an option for the next step in the US magnetic fusion energy program. The primary engineering requirement is to produce a pulse length of greater than 10 s with a plasma current of about 6.6 MA. The FIRE tokamak has a major radius of 2 m, and a minor radius of 0.525 m. Liquid nitrogen cooled copper coils are used for both the toroidal field (TF) and poloidal field (PF) coils. The overall engineering features of FIRE are outlined in this paper.