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Most tech makers would consider a one-second test bitter disappointment, but it’s a smash hit in the world of fusion energy. According to at Phys.org, the Korea Superconducting Tokamak Advanced Research (KSTAR) device recently set a world record by keeping its plasma at an extremely high temperature of 180 million degrees Fahrenheit for 20 seconds. It might not sound like much, but no previous fusion machine lasted more than 10 seconds under these conditions – even KSTAR only lasted eight seconds in 2019.
The key was to improve the internal transport barrier that aids in the containment and stability of plasma.
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