Figure-Analysis of dynamics and spatial structure on the filament during type I ELMy H-mode using VUVI system on EAST

It is a top view of a 3D plot by solidworks and the raw image was captured by the VUVI system.Fig.2 shows an example of SVD analysis result of the VUV imaging data. Fig.3 shows the result of the dynamics of filament width in one ELM cycle.

The filament width are obtained by analyzing the reconstructed images by selecting the key compoents of the SVD analysis.Fig4. shows the dynamics of the poloidal velocity during an ELM crash. It is derived by calculating the relative changes on the position of the filament in two images in series. Fig.5 shows the two dimensional filament structures at different time slices, which are reconstructed using the key components of the SVD analysis of the imaging data.