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France runs fusion reactor for record 22 minutes
(newatlas.com)
This is a most excellent place for technology news and articles.
Sounds like the goal of the test wasn’t to vet ignition power in relation to output. These people are testing the durability of system designs that can maintain a reaction after ignition.
If this was a car, they wouldn’t be testing the fuel efficiency, they’d be testing how long they could drive before the wheels fell off.