Edge Turbulence Imaging on NSTX and Alcator C-Mod

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.

Princeton University. Plasma Physics Laboratory.

关键词: Cameras;    Magnetic Fields;    Excitation;    70 Plasma Physics And Fusion Technology;    Tokamaks, Nstx;   

DOI  :  10.2172/808283
RP-ID  :  PPPPL-3723
RP-ID  :  AC02-76CH03073
RP-ID  :  808283

美国|英语

来源: UNT Digital Library

【 摘 要 】

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.