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  • Image of the Week | Ride 4 Fusion, scientific outreach on two wheels

    A group of fusion researchers has left Padua, Italy, for an 800-kilometre bike trip to the ITER site. Their goal? To share information about fusion energy resea [...]

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  • Manufacturing | Recent milestones in Russia

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  • Vacuum and cleanliness | Space solutions for terrestrial dust

    Satellite cleanliness engineering will help protect the ITER tokamak from construction contamination. When the ITER vacuum team realized that the level of const [...]

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  • On site | IAEA Technical Meeting held to tackle tokamak disruptions

    The detrimental effects of plasma disruptions are a major concern for ITER and all next-generation fusion devices. Experts from all over the world met early thi [...]

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  • Images of the Week | Strengthening cooperation with China

    ITER Director-General Pietro Barabaschi made a diplomatic trip to China last week to represent the ITER Project at multiple high-level meetings. On Thursday 5 S [...]

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Of Interest

See archived entries

ITER NEWSLINE -

KSTAR achieves H-Mode

After obtaining First Plasma in July 2008, KSTAR, the fully superconducting Korean tokamak, achieved its first transition to H-Mode on 8 November almost a year ahead of schedule. (Click to view larger version...)
After obtaining First Plasma in July 2008, KSTAR, the fully superconducting Korean tokamak, achieved its first transition to H-Mode on 8 November almost a year ahead of schedule.
It happened earlier than expected: in Daejon, on 8 November, KSTAR, the Korea Superconducting Tokamak Advanced Reactor, briefly achieved its first transition to H-Mode.

"Although H-mode is not our ultimate goal," explained Myuen Kwon, the Vice President of the Korean National Fusion Research Institute (NFRI), "it is an important milestone, all the more since we achieved it one campaign ahead of schedule."

The H-Mode was "discovered" on the ASDEX Tokamak in February 1982 and later obtained on several other installations such as JET, DIII-D or JT-60. Almost three decades later, this plasma regime, which stores twice as much energy than the regular "L-Mode," still retains some fundamental mystery.

Physicists and tokamak operators know how to obtain it, but their knowledge is largely empirical. The perfect physics equation of H-Mode has yet to be written.

Its value however "is unquestioned," confided H-Mode discoverer Fritz Wagner, in a June 2009 Newsline interview. "It is what makes the goals of fusion possible."

KSTAR's achievement, almost a year ahead of schedule, is of high significance for ITER.

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