NSTX Boundary Plasma Measurement by Fast Camera and Interpretations

Author

Nishino, N. ; Kaita, R. ; Roquemore, L. ; Maqueda, R. ; Zweben, S. ; Bush, C. ; Johnson, D. ; Kugel, H. ; Maingi, R. ; Soukhanovskii, V. ; NSTX Team

Author_Institution

Hiroshima Univ.

fYear

2005

fDate

Sept. 2005

Firstpage

1

Lastpage

6

Abstract

Edge localized modes (ELMs), edge turbulence and other fluctuations in the edge region of NSTX plasma are observed by fast cameras. ELMs categorized as Type I, III, and V are found in NSTX and other MARFE-like activity is seen near the center stack in double null plasmas. Edge turbulence filaments are almost always found in NSTX. An interpretation of ELM images, which shows a complex ELMs structure, is presented

Keywords

Tokamak devices; plasma boundary layers; plasma fluctuations; plasma toroidal confinement; plasma turbulence; ELM images; ITER relevant power; MARFE-like activity; NSTX boundary plasma measurement; National Spherical Torus Experiment; Type I ELM; Type III ELM; Type V ELM; center stack; double null plasmas; edge fluctuations; edge localized modes; edge turbulence filaments; fast camera; Cameras; Fluctuations; Photonics; Physics; Plasma diagnostics; Plasma measurements; Plasma x-ray sources; Radio frequency; Radiofrequency identification; Tokamaks; ELM; ITER relevant; NSTX; component; edge turbulence; fast camera; filament; fluctuation;

fLanguage

English

Publisher

ieee

Conference_Titel

Fusion Engineering 2005, Twenty-First IEEE/NPS Symposium on

Conference_Location

Knoxville, TN

Print_ISBN

0-4244-0150-X

Electronic_ISBN

0-4244-0150-X

Type

conf

DOI

10.1109/FUSION.2005.252963

Filename

4018997