Subscribe options

Select your newsletters:


Please enter your email address:

@

News & Media

Latest ITER Newsline

  • Upending tool | How to raise a sleeping giant

    How will the teams on site raise components weighing up to 450 tonnes from their horizontal delivery configurations to the upright orientation needed for assemb [...]

    Read more

  • SOFT 2018 | Conference opens in antique setting

    The ancient theatre of Taormina, in northeast Sicily, was built by the Romans on the foundations of an earlier Greek theatre. Still used to this day, the round [...]

    Read more

  • Former Council Chair Iotti | "Everyone should be congratulated!"

    For those who dreamed ITER in the 1990s, a visit to the construction site today is like stepping into a miracle. For Bob Iotti, who has been associated with the [...]

    Read more

  • In-vessel coils | Conductor qualified for manufacturing

    For magnet coils operating inside of the vacuum vessel, conventional insulation schemes are not an option. ITER will rely on mineral-insulated conductor technol [...]

    Read more

  • ITER Research Plan | The 400-page scenario

    The ITER Organization has just made publically available the most recent version of the ITER Research Plan, a 400-page document that describes the present visio [...]

    Read more

Of Interest

See archived entries

Two devices, 30 years of progress

Robert Arnoux

Standing behind mockups of ITER and KSTAR, the SNUT-79 Tokamak bears witness to the humble beginnings of fusion research in Korea, and to the spectacular progress that has been accomplished since. (Click to view larger version...)
Standing behind mockups of ITER and KSTAR, the SNUT-79 Tokamak bears witness to the humble beginnings of fusion research in Korea, and to the spectacular progress that has been accomplished since.
The visitors' room at the National Fusion Research Institute (NFRI) in Daejeon, Korea offers one of the most dramatic illustrations of the progress accomplished by fusion research and technology over the past 30 years.

Standing behind mock-ups of ITER and KSTAR, a small, partially rusted device attracts attention. The device looks old although it isn't really: the Seoul National University Tokamak (SNUT-79) operated between 1982 and 1992.

The contrast between SNUT-79, Korea's first significant step into fusion research, and KSTAR, the large superconducting tokamak that entered operation in 2008, is striking. Although the two machines are only twenty years apart they seem to belong to totally different worlds—as if the Wright brothers' Flyer was parked next to an Airbus A380.

It is a small walk from the visitor's room to the large hall that houses the KSTAR Tokamak. The machine, more than 10 metres in diameter, is impressive, remarkably squat and compact. Having just completed its 2012 campaign, it now stands idle. "The machine is undergoing an important overhaul," explains Hyung-Lyeol Yang, the Tokamak Engineering Division head at the KSTAR Research Center. "Several key hardware components are being modified and upgraded in preparation for the next campaign."

Since KSTAR produced its First Plasma on 15 July 2008 it has accumulated close to 9,500 discharges, of which the longest lasted 24 seconds. (Click to view larger version...)
Since KSTAR produced its First Plasma on 15 July 2008 it has accumulated close to 9,500 discharges, of which the longest lasted 24 seconds.
Since KSTAR produced its First Plasma on 15 July 2008 it has accumulated close to 9,500 discharges, of which the longest lasted 24 seconds. As stated the 5th KSTAR Program Advisory Committee (PAC) last April, the machine "has produced far better results than originally envisioned.

KSTAR operation is due to resume in July 2014. "We will mainly try to achieve H Mode at mega ampere plasma current level, H-mode for long pulses (~50s), and also perform several ITER-related physics experiments including further investigation into ELM suppression by enhanced performance of the in-vessel coils," according to Yang.

While acting partly as a test bed for ITER, KSTAR is also paving the way for a Korean DEMO. Not far from the KSTAR Hall, in the brand new NFRI building, a plaque affixed next to an office door reads "DEMO Technology Division." Some twenty people are already at work there, preparing the next-step fusion device—an industrial demonstrator that will open the way to commercial exploitation of fusion energy.



return to the latest published articles