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Lee, Woochang
UNIST Fusion Plasma Laboratory
Research Interests
  • Development of advanced microwave imaging diagnostics for fusion plasma
  • Turbulence and transport in fusion plasma
  • MHD instabilities in fusion plasma

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Comparison of measured 2D ELMs with synthetic images from BOUT plus plus simulation in KSTAR

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Title
Comparison of measured 2D ELMs with synthetic images from BOUT plus plus simulation in KSTAR
Author
Kim, M.Choi, M. J.Lee, J.Yun, G. S.Lee, WoochangPark, Hyeon KeoDomier, C. W.Luhmann, N. C., Jr.Xu, X. Q.
Issue Date
2014-09
Publisher
INT ATOMIC ENERGY AGENCY
Citation
NUCLEAR FUSION, v.54, no.9, pp.1 - 7
Abstract
A detailed study of edge-localized mode (ELM) dynamics in the KSTAR tokamak is performed using a two-dimensional (2D) electron cyclotron emission imaging (ECEI) diagnostic system. Highly coherent mode structures rotating in the poloidal view plane are routinely observed in the inter-ELM pedestal region where the optical thickness for ECE rapidly changes and the interpretation of emission intensity is complicated. To have confidence on the measurements, the observed images are compared with synthetic images of the ELM structure deduced from three-field BOUT++ simulations. The synthetic process considers instrumental effects of the ECEI diagnostic, intrinsic broadening of the ECE and background noise. The synthetic 2D images highly resemble the observed structure, providing confidence that the ELM dynamics can be visualized by ECEI.
URI
https://scholarworks.unist.ac.kr/handle/201301/7343
DOI
10.1088/0029-5515/54/9/093004
ISSN
0029-5515
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PHY_Journal Papers
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