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Abstract

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.

Additional information

Authors: IMBEAUX F, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);ARTAUD J F, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);JOFFRIN E, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);BOURDELLE C, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);NA Y, Max-Planck-Institut für Plasmaphysik, IPP-EURATOM Association, Garching (DE);SIPS A, Max-Planck-Institut für Plasmaphysik, IPP-EURATOM Association, Garching (DE);KINSEY J, Leigh University, Bethlehem (US);TALA T, Association Euratom-TEKES, VTT Processes, Espoo (FI);FUJITA T, Naka Fusion Research Establishment, Japan Atomic Research Institute, Ibaraki-ken (JP);SAKAMOTO Y, Naka Fusion Research Establishment, Japan Atomic Research Institute, Ibaraki-ken (JP);GREENFIELD C, General Atomics, San Diego (US);PARAIL V V, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);VOITSEKHOVITCH I, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB)
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: dirdrfc@drfc.cad.cea.fr
Record Number: 200518298 / Last updated on: 2005-07-26
Category: PUBLICATION
Original language: en
Available languages: en