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Electron cyclotron emission reconstruction image and mode in HT-7 tokamak
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View: Figures


Image of FIG. 1.
FIG. 1.

Schematic diagram of ECE reconstruction image. Three circles stand for flux surfaces: an assumed (centered in c0) and two obtained (centered in c1 and c2) flux surfaces from two arbitrary ECE channels.

Image of FIG. 2.
FIG. 2.

Waveforms of discharge 109559 with subpanels: plasma current (Ip), line averaged density (Ne), three ECE signals (ECE 03, ECE09, and ECE11), poloidal Mirnov signals (Mirnov P9), and toroidal Mirnov signals (Mirnov T9) from up to down.

Image of FIG. 3.
FIG. 3.

Time-frequency spectrum of toroidal Mirnov signals (Mirnov T9). Color bar indicates power density (dB).

Image of FIG. 4.
FIG. 4.

Poloidal Mirnov signals at differently poloidal angles and phase delay of signals at different locations indicated by black oblique lines.

Image of FIG. 5.
FIG. 5.

Time-slices of different ECE signals. Four time-points (t1, t2, t3, and t4) are used for reconstruction image.

Image of FIG. 6.
FIG. 6.

ECE reconstruction image with total (left column) and fluctuation (right column) signals at the four time-points in Fig. 5. Color bars indicate ECE signal relative intensity (a.u.).


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Electron cyclotron emission reconstruction image and m/n=3/2 mode in HT-7 tokamak