Basic divertor operation in ITER-FEAT

The modelling studies being performed for steady state divertor operation of the ITER-FEAT design are summarized. Optimization of the divertor geometry reveals the importance of the proper target shape for a reduction of the peak power loads. A high gas conductance between the divertor legs is also...

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Bibliographic Details
Published in:Nuclear fusion 2002-02, Vol.42 (2), p.187-191
Main Authors: Kukushkin, A.S, Pacher, H.D, Janeschitz, G, Loarte, A, Coster, D.P, Matthews, G, Reiter, D, Schneider, R, Zhogolev, V
Format: Article
Language:English
Subjects:
Carbon
Design
Electric conductivity of gases
Electric loads
Impurities
Mathematical models
Optimization
Plasmas
Radiation
Tritium
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Summary:The modelling studies being performed for steady state divertor operation of the ITER-FEAT design are summarized. Optimization of the divertor geometry reveals the importance of the proper target shape for a reduction of the peak power loads. A high gas conductance between the divertor legs is also essential for maintaining acceptable conditions in the outer divertor, which receives a higher power loading than the inner divertor. Impurity seeding, which would be necessary if tritium co-deposition concerns precluded the use of carbon as the plasma facing material, can ensure the required high radiation level at acceptable Z sub(eff), and the divertor performance is not very sensitive to the choice of radiating impurity.
ISSN:0029-5515
1741-4326
DOI:10.1088/0029-5515/42/2/310