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Author(s):
Y. Miura, K. Itoh, S. - I. Itoh, T. Takizuka, H. Tamai, T. Matsuda, N. Suzuki, M. Mori, H. Maeda and O. Kardaun
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Title:
Geometric Dependence of the Scaling Law on the Energy Confinement Time in H-mode Discharges
Date of publication:
June 1991
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Key words:
Energy Confinement Time, Scaling Law, H-Mode Elongation, Single-Null and Double-Null Divertor, Closed and Open Divertor
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Abstract:
The dependence of the energy confinement time tau_E in the H-mode discharges on the plasma elongation and divertor configurations is studied. Regression analysis is made on the H-mode database, while the dependence on the closed/open divertor is introduced according to the ASDEX experiments. The dependence of tau_ E on the elongation factor kappa was found to be positive (approximately kappa^0.8) for the ELM free H-mode, confirming the experiments on kappa-dependence in JFT-2M tokamak. The influence of the single/double null divertor configuration is also discussed.
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