EXB-Drift, Current, and Kinetic Effects on Divertor Plasma Profiles During ELMs

Conference · Thu May 23 00:00:00 EDT 2002

OSTI ID:802834

Rognlien, T D; Shimada, M

The transient heat load on divertor surfaces from Edge-Localized Modes (ELMs) in tokamaks can be very large and thus of concern for a large device such as ITER. Models for kinetic modifications to fluid models are discussed that should allow them to reasonably describe the long mean-free path regime encountered owing to the high electron and ion temperatures in the SOL during large ELMs. A set of two-dimensional (2D) simulations of the dynamic response of the scrape-off layer (SOL) plasma to an ELM is presented. The role of plasma currents and E x B motion is emphasized, which cause large changes in the response compared to models neglecting them.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE Office of Defense Programs (DP) (US)
• DOE Contract Number: W-7405-Eng-48
• OSTI ID: 802834
• Report Number(s): UCRL-JC-148502; TRN: US200302%%110
• Resource Relation: Conference: 15th International Conference on Plasma Surface Interactions in Controlled Fusion Devices, Gifu (JP), 05/27/2002--05/31/2002; Other Information: PBD: 23 May 2002
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
DIVERTORS
ELECTRONS
ION TEMPERATURE
KINETICS
MODIFICATIONS
PLASMA
SOLS
TRANSIENTS