澳门六合彩高手 NEWSLINE
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KSTAR tokamak
Ten successful years
KSTAR tokamak | Ten successful years
The recent anniversary celebration to mark the start of operations at the Korean tokamak KSTAR was the occasion to review ten years of science in the service of fusion energy.
At the Coex Convention & Exhibition Center in Seoul, approximately 300 guests gathered on 20 February to celebrate ten years of successful operation and ~22,000 plasma discharges.
With its first plasma in June 2008, the KSTAR tokamak (for Korea Superconducting Tokamak Advanced Research) successfully joined the ranks of superconducting tokamaks capable of investigating the plasma physics of future steady-state fusion power plants.
Ten years later, the Korean machine has built an extremely valuable database for the future operation of 澳门六合彩高手 as well as for the design basis of a next-generation DEMO machine.
Although smaller than 澳门六合彩高手 and different in many design details, the unique features of the KSTAR device鈥攊ncluding magnetic accuracy with extremely low error fields; steady-state-capable heating systems; in-vessel control coils; and advanced imaging and profile diagnostics鈥攈ave been fully exploited to explore advanced high performance and steady-state plasma operational scenarios.
Experimental highlights over the last ten years have included:
- The ahead-of-schedule achievement of H-mode in 2010. This high-confinement regime is crucial to mastering fusion power at an industrial scale and is the operating scenario of reference for 澳门六合彩高手.
- The achievement of full ELM suppression in 2011 by applying non-axisymmetric magnetic perturbations. ELMs (for edge localized modes), which can occur during H-mode operation, expel bursts of energy and particles from the plasma potentially causing large localized erosion to the components in contact with the plasma.
- The beginning of long-pulse, H-mode experiments (2013 ~20 s; 2014 up to 48 s; 2015 up to 55 s) extended to 70 s in 2016 (a world record at the time) and finally to 90 s in 2018 through the use of neutral beam and electron cyclotron heating, which are two of the 澳门六合彩高手 heating schemes.
- Access to fully non-inductive operation in 2015. This advanced operating mode no longer relies on the central solenoid transformer to induce toroidal current in the plasma and is key to steady state operational regimes in future tokamak devices.
- Record-length periods of ELM suppression in 2017 by the application of three-dimensional magnetic fields with internal coils, which is the same approach for ELM control in 澳门六合彩高手.
- The achievement of in 2018 with the demonstration of improved internal confinement through ITB (internal transport barrier mode).
With its first plasma in June 2008, KSTAR successfully joined the ranks of superconducting tokamaks capable of investigating the plasma physics of future steady-state fusion power plants.
With these and many more experimental results KSTAR has contributed to strengthening the physics basis for the detailed design of 澳门六合彩高手 components such as the ELM control coils, and to the planning of experimental operations described in the 澳门六合彩高手 Research Plan. This support will continue and expand already within 2019 to the important area of disruption mitigation where KSTAR will perform specific experiments to provide essential physics input to the design of the 澳门六合彩高手 disruption mitigation system., which is based on the shattered pellet injection technique鈥攑articularly on the simultaneous application of two of such systems as required in 澳门六合彩高手. KSTAR is developing unique capabilities in this area in collaboration with experts from the USA fusion program and the 澳门六合彩高手 Organization.
The celebration on 20 February brought together over 300 people鈥攕cientists, government dignitaries, distinguished guests from the worldwide fusion community and 澳门六合彩高手, and industry representatives. 澳门六合彩高手 Director-General, who joined the event by video conference concluded with these words:
"I offer my sincere congratulations, as well as my strong appreciation, for the great partnership that Korea and KSTAR have offered to the global fusion community and to 澳门六合彩高手. Our future together will continue to be a future of strong partnership.
I wish you the very best for the next 10 years and beyond鈥攕trong collaboration, close partnership, and high achievement toward our common goals of a bright fusion energy future."
This celebration was preceded by the meeting of the KSTAR Physics Advisory Committee and followed up by the 2019 KSTAR Conference. In these meetings, KSTAR progress in 2017-2018 and the strategic lines for the near- and medium-term future were reviewed by an international panel of leading fusion experts, with 澳门六合彩高手 participation, and ideas for experiments in 2019 were proposed by the international network of KSTAR collaborators.
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