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Korea's superconducting tokamak KSTAR has run successfully since 2008. In December 2016, the machine produced a record 70-second high-performance plasma (H-mode) and achieved record-length periods of ELM suppression the following year.

Although smaller and different in detailed design, the Korean machine has built an extremely valuable database for the future operation of ITER.

On 4 September, KSTAR passed an important milestone: at 11:20 a.m., the machine produced its 20,000th plasma shot—all of them achieved without accident or major repair.

Read more (in Korean) .