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Overview of ASDEX Upgrade results - development of integrated operating scenarios for ITER
KTH, School of Engineering Sciences (SCI), Physics.
Number of Authors: 182
2005 (English)In: Nuclear Fusion, ISSN 0029-5515, E-ISSN 1741-4326, Vol. 45, no 10, S98-S108 p.Article in journal (Refereed) Published
Abstract [en]

Significant progress has been made on ASDEX Upgrade during the last two years in the basic understanding of transport, in the extension of the improved H-mode in parameter space and towards an integrated operating scenario and in the development of control methods for major performance limiting instabilities. The important features were the understanding of particle transport and the control of impurity accumulation based on it, the satisfactory operation with predominantly tungsten-clad walls, the improved H-mode operation over density ranges and for temperature ratios covering (non-simultaneously) the ITER requirements on v*, n/n(GW) and T(e)/T(i), the ELM frequency control by pellet injection and the optimization of NTM suppression by DC-ECCD through variation of the launching angle. From these experiments an integrated scenario has emerged which extrapolates to a 50% improvement in n T tau or a 30% reduction of the required current when compared with the ITER base-line assumptions, with moderately peaked electron and controllable high-Z density profiles.

Place, publisher, year, edition, pages
2005. Vol. 45, no 10, S98-S108 p.
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-42707DOI: 10.1088/0029-5515/45/10/S08ISI: 000233174200009ScopusID: 2-s2.0-26844509307OAI: diva2:447477
QC 20111012. Author count: 182.Available from: 2011-10-12 Created: 2011-10-12Bibliographically approved

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