Pan'kin, A. Y. and Park, G. Y. and Cummings, J. and Chang, C. S. and Bateman, G. and Bunner, D. and Groebner, R. J. and Hughes, J. W. and LaBombard, B. and Terry, J. L. and Kritz, A. H. and Ku, S. and Rafiq, T. and Snyder, P. B. (2011) Kinetic modeling of H-mode pedestal with effects from anomalous transport and MHD stability. Problems of Atomic Science and Technology, 2011 (1). pp. 8-12. ISSN 1562-6016 http://resolver.caltech.edu/CaltechAUTHORS:20110329-105446638
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Scaling of the H-mode pedestal in tokamak plasmas with type I ELMs and dependence of the pedestal properties and the resulting divertor head load width with the plasma elongation and plasma current are investigated using the kinetic neoclassical XGCO code for DIII-D and Alcator C-Mod tokamaks. The simulations in this study use realistic diverted geometry and are self-consistent with the inclusion of kinetic neoclassical physics, theory-based anomalous transport models with the ExB flow shearing effects, as well as an MHD ELM triggering criterion. Scalings for the pedestal width and height are developed as a function of the scanned plasma parameters. The nonlinear interplay between anomalous and neoclassical effects motivates the development of a self-consistent simulation model that includes neoclassical and anomalous effects simultaneously. It is demonstrated that the divertor heat load width depend on the plasma currents. In the development of this dependence, effects of neutral collisions and anomalous transport are taken into account. Changes in the neoclassical divertor heat load fluxes associated with the introduction of the neutral collision and anomalous transport effects are described.
|Additional Information:||© 2010 Kharkov Institute of Physics & Technology. Article received 29.09.10. This work supported by the U.S. Department of Energy under grants DE-SC0000692, DE-FC02-08ER54985, DE-FG02-06ER54845, DE-FG02-92ER54141, DE-FG03-98ER54461, DE-FG02-94ER54084, DE-FC02-04ER54698, DE-FC02-99ER54512.|
|Classification Code:||PACS: 52.25.Xz, 52.35.Ra, 52.55.Fa, 52.65.Tt|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Tony Diaz|
|Deposited On:||29 Mar 2011 21:55|
|Last Modified:||29 Mar 2011 21:55|
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