Multi-machine transport analysis of hybrid discharges from the ITPA Profile Database
Current diffusion, heat transport modelling, and linear gyrokinetic stability analysis have been carried out on a set of hybrid discharges from AUG, DIII-D, JET and JT-60U, in order to gain better understanding of the physics underlining 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<rho<0.8. The core heat transport appears to be similar between hybrid discharges and stsndard 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 beta 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 beta(n) on extended duration.
Bibliographic Reference: An oral paper given at: 32nd EPS Conference on Controlled Fusion and Plasma Physics Organised by: Asociación EURATOM-CIEMAT para Fusión Held at: Congress Palace of Tarragona, Tarragona (ES)
Availability: Available from Association EURATOM-CEA, Departement de Recherches sur la Fusion Controlee, CEA Cadarache, F-13108 St Paul-Lez-Durance, FranceL%Tel: (+33) 4 42 25 70 01; Fax: (+33) 4 42 25 64 21 E-mail: firstname.lastname@example.org
Record Number: 200518298 / Last updated on: 2005-07-26
Original language: en
Available languages: en