More details: Iter - The next generation fusion reactor
Joint European Torus

Iter will be based on Jet (Joint European Torus). In Jet, the plasma is shaped like a doughnut and confined by a powerful magnetic field.

Coming into operation in 1983, Jet achieved a world record for fusion by producing an energy output of 12.9 MW in a 1997 experiment.

But the Jet reactions are fleeting and consume more energy than they produce.

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