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박현거

Park, Hyeon Keo
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Post calibration of the two-dimensional electron cyclotron emission imaging instrument with electron temperature characteristics of the magnetohydrodynamic instabilities

Author(s)
Choi, MJPark, Hyeon KeoYun, Gunsu SNam, Yoon BumChoe, GHLee, WoochangJardin, S
Issued Date
2016-01
DOI
10.1063/1.4940030
URI
https://scholarworks.unist.ac.kr/handle/201301/21189
Fulltext
http://aip.scitation.org/doi/10.1063/1.4940030
Citation
REVIEW OF SCIENTIFIC INSTRUMENTS, v.81, no.1, pp.013506
Abstract
The electron cyclotron emission imaging (ECEI) instrument is widely used to study the local electron temperature (T-e) fluctuations by measuring the ECE intensity I-ECE proportional to T-e in tokamak plasmas. The ECEI measurement is often processed in a normalized fluctuation quantity against the time averaged value due to complication in absolute calibration. In this paper, the ECEI channels are relatively calibrated using the flat T-e assumption of the sawtooth crash or the tearing mode island and a proper extrapolation. The 2-D relatively calibrated electron temperature (T-e,T-rel) images are reconstructed and the displacement amplitude of the magnetohydrodynamic modes can be measured for the accurate quantitative growth analysis
Publisher
AMER INST PHYSICS
ISSN
0034-6748
Keyword
FLUCTUATION MEASUREMENTSSAWTOOTH CRASHESTOKAMAK PLASMASDENSITY

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