Edge Turbulence Imaging on NSTX and Alcator C-Mod

Technical Report · Wed Jul 10 00:00:00 EDT 2002

DOI:https://doi.org/10.2172/808283· OSTI ID:808283

Zweben, S J; Maqueda, R A; Terry, J L; Bai, B; Boswell, C J; Bush, C E; D'Ippolito, D; Fredrickson, E D; Greenwald, M; Hallatschek, K; Kaye, S; LaBombard, B; Maingi, R; Myra, J; Nevins, W M; Rogers, B N; Stotler, D P; Wilgen, J; Xu, and X.Q.

Edge turbulence images have been made using an ultra-high speed CCD camera on both NSTX and Alcator C-Mod. In both cases, the D-alpha or HeI (587.6 nm) line emission from localized deuterium or helium gas puffs was viewed along a local magnetic field line near the outer midplane. Fluctuations in this line emission reflect fluctuations in electron density and/or electron temperature through the atomic excitation rates, which can be modeled using the DEGAS-2 code. The 2-D structure of the measured turbulence can be compared with theoretical simulations based on 3-D fluid models.

• Research Organization: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
• Sponsoring Organization: USDOE Office of Science (US)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 808283
• Report Number(s): PPPPL-3723; TRN: US0301849
• Resource Relation: Other Information: PBD: 10 Jul 2002
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CAMERAS
DEUTERIUM
ELECTRON DENSITY
ELECTRON TEMPERATURE
EXCITATION
FLUCTUATIONS
HELIUM
MAGNETIC FIELDS
TURBULENCE
VELOCITY
EDGE PLASMA
TOKAMAKS
NSTX