Development of KSTAR ECE imaging system for measurement of temperature fluctuations and edge density fluctuation

TitleDevelopment of KSTAR ECE imaging system for measurement of temperature fluctuations and edge density fluctuation
Publication TypeJournal Article
Year of Publication2010
AuthorsG.S Yun, W. Lee, M.J Choi, J.B Kim, H.K Park, C.W. Domier, B. Tobias, T. Liang, X. Kong, NC Luhmann, Jr., A.JH Donne
JournalReview of Scientific Instruments
Volume81
Number10
Pagination3
Date PublishedOct
Type of ArticleProceedings Paper
ISBN Number0034-6748
Accession NumberISI:000283754000150
KeywordsOSCILLATIONS, TOKAMAK
Abstract

The ECE imaging (ECEI) diagnostic tested on the TEXTOR tokamak revealed the sawtooth reconnection physics in unprecedented detail, including the first observation of high-field-side crash and collective heat transport [H. K. Park, N. C. Luhmann, Jr., A. J. H. Donne et al., Phys. Rev. Lett. 96, 195003 (2006)]. An improved ECEI system capable of visualizing both high-and low-field sides simultaneously with considerably better spatial coverage has been developed for the KSTAR tokamak in order to capture the full picture of core MHD dynamics. Direct 2D imaging of other MHD phenomena such as tearing modes, edge localized modes, and even Alfven eigenmodes is expected to be feasible. Use of ECE images of the optically thin edge region to recover 2D electron density changes during L/H mode transitions is also envisioned, providing powerful information about the underlying physics. The influence of density fluctuations on optically thin ECE is discussed. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3483209]

URL<Go to ISI>://000283754000150
Division

Fusion Physics

PID

dd440b654ac8cb32739f437b0dd4baed

Alternate TitleRev. Sci. Instrum.

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