Abstract
Current diffusion, heat transport modelling, and linear gyrokinetic
stability analysis have been carried out on a set of seven hybrid
discharges from AUG, DIII-D, JET and JT-60U, in order to gain better
understanding of the physics underlying this promising candidate
scenario for ITER. Within this dataset, the GLF23 model has a higher
accuracy than the Weiland model in predicting the temperature profiles
in the region 0.3 < ρ < 0.8. The core heat transport appears to be
similar between hybrid discharges and standard H-modes, and also among
hybrid discharges with very different H factors. Projections to ITER show that Q
= 10 can be obtained with the hybrid scenario using an alternative
scaling without β degradation. However, additional off-axis current
drive and current profile control might be needed for the ITER hybrid
scenario, in order to achieve its full potential for high βN on extended duration.
Original language | English |
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Pages (from-to) | B179 - B194 |
Number of pages | 16 |
Journal | Plasma Physics and Controlled Fusion |
Volume | 47 |
Issue number | 12B |
DOIs | |
Publication status | Published - 2005 |
MoE publication type | A1 Journal article-refereed |
Keywords
- JET
- plasma
- fusion energy
- fusion reactors
- tokamak
- ITER
- hybrid discharges
- lower hybrid current drive
- current drive