Images of edge turbulence in NSTX

Author

Zweben, S.J. ; Bush, C.E. ; Maqueda, R.J. ; Munsat, T. ; Stotler, D.P. ; Lowrance, J.L. ; Mastrocola, V.J. ; Renda, G.

Author_Institution

Princeton Plasma Phys. Lab., NJ, USA

Volume

33

Issue

2

fYear

2005

fDate

4/1/2005 12:00:00 AM

Firstpage

446

Lastpage

447

Abstract

The two-dimensional structure of edge plasma turbulence has been measured in the National Spherical Torus Experiment (NSTX) by viewing the emission of the D_a spectral line of deuterium. Images have been made at framing rates of up to 250 000 frames/s using an ultra-high speed charged coupled device camera developed by Princeton Scientific Instruments. A sequence of images showing the transition between L-mode and H-mode states is shown.

Keywords

Tokamak devices; deuterium; high-speed optical techniques; plasma boundary layers; plasma diagnostics; plasma instability; plasma toroidal confinement; plasma turbulence; D; H-mode state; L-H transition; L-mode state; NSTX; National Spherial Torus Experiment; deuterium; edge plasma turbulence; spectral line emission; two-dimensional structure; ultrahigh speed charged coupled device camera; Charge-coupled image sensors; Deuterium; Electrons; Instruments; Plasma confinement; Plasma devices; Plasma measurements; Plasma temperature; Spatial resolution; Toroidal magnetic fields; Edge plasma; National Spherical Torus Experiment (NSTX); imaging; turbulence;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2005.845140

Filename

1420519