Structure and Motion of Edge Turbulence in NSTX
Abstract
Images of the edge turbulence in the National Spherical Torus Experiment (NSTX) are taken with the Princeton Scientific Instruments PSI-4 fast-framing camera. A series of 28 images is taken for each shot, with each frame typically having an exposure time of 10 μ s. The two main types of structure seen in the edge turbulence are waves and blobs that move through the imaging area within the timeframe of the image series. In this study, we are analyzing these features and their motion using various methods. For example, we track the motion of the blobs in order to determine their direction and speed. Similarly, the position and motion of the wave-like structures are tracked and compared with the blobs. We also use the Gyrokinetic Visualization (GKV) code, written by William M. Nevins, to analyze the images.
- Publication:
-
APS Division of Plasma Physics Meeting Abstracts
- Pub Date:
- November 2002
- Bibcode:
- 2002APS..DPPGP1116K