Former experimental tokamak at Princeton Plasma Physics Laboratory
TFTR
Tokamak Fusion Test Reactor
TFTR in 1989
Device type
Tokamak
Location
Princeton, New Jersey, US
Affiliation
Princeton Plasma Physics Laboratory
Technical specifications
Major radius
2.52 m (8 ft 3 in)
Minor radius
0.87 m (2 ft 10 in)
Magnetic field
6.0 T (60,000 G) (toroidal)
Heating power
51 MW
Plasma current
3 MA
History
Year(s) of operation
1982–1997
Preceded by
Princeton Large Torus (PLT)
Succeeded by
National Spherical Torus Experiment (NSTX)
Related devices
JT-60
The Tokamak Fusion Test Reactor (TFTR) was an experimental tokamak built at Princeton Plasma Physics Laboratory (PPPL) circa 1980 and entering service in 1982. TFTR was designed with the explicit goal of reaching scientific breakeven, the point where the heat being released from the fusion reactions in the plasma is equal or greater than the heating being supplied to the plasma by external devices to warm it up.[1][2]
The TFTR never achieved this goal, but it did produce major advances in confinement time and energy density. It was the world's first magnetic fusion device to perform extensive scientific experiments with plasmas composed of 50/50 deuterium/tritium (D-T), the fuel mix required for practical fusion power production, and also the first to produce more than 10 MW of fusion power. It set several records for power output, maximum temperature, and fusion 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 by Shoichi Yoshikawa (1934-2010)[3] during his time at PPPL in the 1970s.
^Meade, Dale (September 1988). "Results and Plans for the Tokamak Fusion Test Reactor". Journal of Fusion Energy. 7 (2–3): 107. Bibcode:1988JFuE....7..107M. doi:10.1007/BF01054629. S2CID 120135196.
^Cite error: The named reference princeton was invoked but never defined (see the help page).
^A Celebration of the Life and Work of Shoichi Yoshikawa, April 9, 1934–November 4, 2010(PDF). NSTX-U.
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