Nonlinear Turbulence Simulations for NSTX H-modes

Technical Report · Tue Jun 22 00:00:00 EDT 2004

DOI:https://doi.org/10.2172/828191· OSTI ID:828191

Redi, M H; Kaye, S; Dorland, W; Bell, R; Bourdelle, C; Ethier, S; Gates, D; Hammett, G; Hill, K; LeBlanc, B; McCune, D; Menard, J; Mikkelsen, D; Rewoldt, G; Synakowski, E

Present evidence points to remarkably resilient electron temperature profiles in high-density H-mode plasmas on the National Spherical Torus Experiment (NSTX), suggesting that the underlying electron thermal transport mechanisms respond in a highly nonlinear fashion to changes in the gradients. This paper uses measured plasma profiles as input to linear gyrokinetic analysis to identify candidate micro-instabilities that may be responsible for the electron thermal transport. The criteria for useful nonlinear micro-stability analyses are discussed along with necessary approximations and computational issues.

• Research Organization: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
• Sponsoring Organization: USDOE Office of Science (SC) (US)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 828191
• Report Number(s): PPPL-3969; TRN: US0404492
• Resource Relation: Other Information: PBD: 22 Jun 2004
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ELECTRON TEMPERATURE
ELECTRONS
PLASMA
TRANSPORT
TURBULENCE
COMPUTER PHYSICS
TOKAMAKS
NSTX