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Abstract

Superconducting coils in a tokamak are subject to AC losses when the field transverse to the coil current varies. A simple model to evaluate the AC losses has been derived and benchmarked against a complete model used in the ITER design procedure. The influence of the feedback control strategy on the AC losses is examined using this model. An improved controller is proposed, based on this study.

The second part of this report describes the use of the AC-CRPP loss evaluation code. .

Additional information

Authors: SCHÄRZ B, École Polytechnique Fédérale de Lausanne, CRPP, Lausanne (CH);LISTER J B, École Polytechnique Fédérale de Lausanne, CRPP, Lausanne (CH);BRUZZONE P, École Polytechnique Fédérale de Lausanne, CRPP, Fusion Technology, Villigen-PSI (CH);FAVEZ J-Y, École Polytechnique Fédérale de Lausanne, DGM, IA, Lausanne (CH);ZAPRETILINA E, Efremov Institute, St Petersburg (RU);SCHARZ B, Ecole Polytechnique Federale de Lausanne, CRPP, Lausanne (CH)
Bibliographic Reference: An article published as an internal report: LRP 714/01, 37 pp.
ISBN: ISSN 0458-5895
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