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Scientists confirm twisty fusion device's odd magnetic fields
Now that the first large version of a extraordinarily complex, cruller-shaped stellarator fusion device is up and running, there's an overriding question: is it behaving the way scientists expected? Thankfully, the answer is yes. Researchers have confirmed that Germany's Wendelstein 7-X stellarator is producing the 3D magnetic fields that were anticipated from its twisty design. In fact, it's faithful to the concept with "unprecedented accuracy" -- the error rate is less than one in 100,000.
