Tokamak Fusion Test Reactor
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The Tokamak Fusion Test Reactor was an experimental tokamak built at Princeton Plasma Physics Laboratory circa 1980 and entering service in 1982. TFTR was designed with the explicit goal of reaching s
TFTR in 1989
Inside the TFTR plasma vessel
Spherical tokamak
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A spherical tokamak is a type of fusion power device based on the tokamak principle. It is notable for its very narrow profile, or aspect ratio. A traditional tokamak has a toroidal confinement area t
Tokamak Fusion Test Reactor
…triple product. TFTR shut down in 1997 after fifteen years of operation. PPPL used the knowledge from TFTR to begin studying another approach, the spherical tokamak, in their National Spherical Torus Experiment. The Japanese JT-60 is very similar to the TFTR, both tracing their design to key innovations introduced…
A plasma in the MAST reactor. Note the almost spherical shape of the outside edge of the plasma. The high elongation is also evident, notably the filaments extending off the top and bottom near the central conductor.
Inside the National Spherical Torus Experiment vacuum chamber.
Design of the ST40 spherical tokamak with a major radius of 0.4 m.