CaltechAUTHORS
Published February 2011 | Version public
Journal Article Metadata-only

Kinetic modeling of H-mode pedestal with effects from anomalous transport and MHD stability

Creators

Abstract

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.

Additional details

Identifiers

Eprint ID
23155
Resolver ID
CaltechAUTHORS:20110329-105446638

Funding

Department of Energy (DOE)
DE-SC0000692
Department of Energy (DOE)
DE-FC02-08ER54985
Department of Energy (DOE)
DE-FG02-06ER54845
Department of Energy (DOE)
DE-FG02-92ER54141
Department of Energy (DOE)
DE-FG03-98ER54461
Department of Energy (DOE)
DE-FG02-94ER54084
Department of Energy (DOE)
DE-FC02-04ER54698
Department of Energy (DOE)
DE-FC02-99ER54512

Dates

Created
2011-03-29
Created from EPrint's datestamp field
Updated
2019-10-03
Created from EPrint's last_modified field