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ZANG Linge (臧临阁), M. TAKEUCHI, N. NISHINO, T. MIZUUCHI, S. OHSHIMA, K. KASAJIMA, M. SHA, K. MUKAI, et al. Observation of Edge Plasma Fluctuations with a Fast Camera in Heliotron J[J]. Plasma Science and Technology, 2013, 15(3): 213-216. DOI: 10.1088/1009-0630/15/3/04
Citation: ZANG Linge (臧临阁), M. TAKEUCHI, N. NISHINO, T. MIZUUCHI, S. OHSHIMA, K. KASAJIMA, M. SHA, K. MUKAI, et al. Observation of Edge Plasma Fluctuations with a Fast Camera in Heliotron J[J]. Plasma Science and Technology, 2013, 15(3): 213-216. DOI: 10.1088/1009-0630/15/3/04

Observation of Edge Plasma Fluctuations with a Fast Camera in Heliotron J

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  • Received Date: January 10, 2012
  • fast video camera is verifi to be a powerful tool for observation of fiments/blobs near the last closed °ux surface (LCFS). In order to extract the fltuation component from the raw data of the fast camera, a pre-processing technique, sliding time window averaging subtraction (STWAS) has been developed to remove the background of slowly varying emission from the bulk plasma. By using this pre-processing technique, the fast camera data are analyzed. A method to identify the fiments in the pre-processed image is also discussed.
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