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Plasma Physics Controlled Fusion
Multi-machine transport analysis of hybrid discharges from the ITPA profile database
  F Imbeaux, J F Artaud, J Kinsey, T J J Tala, C Bourdelle, T Fujita, C Greenfield, E Joffrin, Y S Na, V V Parail, Y Sakamoto, A C C Sips, I Voitsekovitch and contributors to the EFDA-JET Workprogramme
  2005
  DOI
 
Resumo
 
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.

 

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