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KSTAR fusion device maintains 100 million degrees for record 20 seconds
However, progress continues to be made on the various approaches to practical nuclear fusion being pursued, of which tokamak reactors remain a frontrunner. In another promising development for the technology, the Korea Superconducting Tokamak Advanced Research (KSTAR) fusion device has set a world record by maintaining plasma at over 100 million °C (180 million °F) for 20 seconds.
Completed in 2007 and achieving first plasma in 2008, in 2016 KSTAR set a world record for the longest operation in high-confinement mode by successfully maintaining a high-temperature hydrogen plasma at about 50 million °C (90 million °F) for 70 seconds. China subsequently claimed a new record in 2017 with its Experimental Advanced Superconducting Tokamak (EAST), managing to maintain plasma at a similar temperature for 102 seconds.