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[ 2018 ] Maintains a core temperature of 100 million degrees for 1.5 s through the formation of an internal transport barrier (ITB)

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Register Date 2019-09-30

Maintains a core temperature of 100 million degrees for 1.5 s through the formation of an internal transport barrier (ITB)
Research Achievements Maintains a core temperature of 100 million degrees for 1.5 s through the formation of an internal transport barrier (ITB)
Main Contributor Jinil Chung, S. -H. Hahn and Advanced operation scenario research team
Related Research Project KSTAR Joint experiments and plasma research (S. W. Yoon)
Main Contributor Qualitative Achievements
- Maintains a core temperature of 100 million degrees (~ 9 keV) for 1.5 s through the formation of an internal transport barrier (ITB)
Quantitative Achievements
- paper and conference presentation in preparation
Superiorities &
differences
Superiorities
- All physics parameters indicating plasma performance were very stable
- It is likely to improve performance with the planned higher heating power
Differences
- The ion temperature reached about 100 million degrees and remained stable for the first time in a full superconducting tokamak
Expected Effect &
Ripple Effect
Technical Perspectives
- The ITB is concerned that it may provide a possible route towards simultaneous high fusion performance and continuous tokamak reactor operation in a non-inductive current drive state.
- The access of the internal transport barrier (ITB) formation is dealt with an important physics issue in the most of major tokamaks
Economical & Social Perspectives
- An ignited reactor with ITB can be smaller and cheaper than a conventional reactor, if the ITB can be controlled and maintained in a stationary way
Evidence Schematic of possible operation mode in a tokamak Schematic of possible operation mode in a tokamak Time-trace parameters indicating plasma performance during the ITB Time-trace parameters indicating plasma performance during the ITB Ion temperature profiles before (blue) and after (green) the ITB formation Ion temperature profiles before (blue) and after (green) the ITB formation

Authorities concerned