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that new research "confirms" that the magnet-based design used in those tests isn't just impressive in a lab setting, but is practical and economically viable, too.IEEE Transactions on Applied Superconductivitylandmark test"Overnight, it basically changed the cost per watt of a fusion reactor by a factor of almost 40 in one day," Dennis Whyte, former director of MIT's Plasma Science and Fusion Center and a professor of engineering, said in a release.
One strategy is to use a machine called a tokamak, a donut shaped chamber lined with massive superconducting magnets, to lock the hydrogen in place. Many fusion reactor designs use tokamaks, and Whyte believes that the findings show the devices "have a chance... to greatly reduce the size and the cost of objects that would make fusion possible.
"It was very much a surprise to the community when we announced that it was a no-insulation coil," he added. In their now landmark full-scale test, Hartwig said, the researchers built a 20,000 pound magnet capable of maintaining a magnetic field of over 20 tesla, which could be enough to support fusion reactions that achieve a net output of power.
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