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Diagnostics for first plasma and development plan on KSTAR
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Image of FIG. 1.
FIG. 1.

Top view of KSTAR tokamak and first diagnostic systems.

Image of FIG. 2.
FIG. 2.

KSTAR interior during an Ohmic plasma discharge at 210 frames/s, 3 ms experimental time, shot 794 as taken with the visible/H-alpha TV on the A median port: (a) start of ECH preionization at , (b) Ohmic plasma formed at due to the superconducting PF magnet coil current discharge, (c) plasma current reached 107 kA for the first time at , and (d) plasma hit the inboard tile just before it died out at .

Image of FIG. 3.
FIG. 3.

Time evolution of plasma parameters during a plasma discharge (shot 794): total currents from VCMs, plasma currents from RCs, and a loop voltage from a flux loop.

Image of FIG. 4.
FIG. 4.

Microwave parts shielding box and supporting structure of millimeter-wave interferometer system.

Image of FIG. 5.
FIG. 5.

Microwave beam path of millimeter-wave interferometer system.

Image of FIG. 6.
FIG. 6.

Measured phase comparator output and fringe-jump corrected line density of KSTAR commissioning phase (shot 1135). (a) Raw data on channel 1. (b) Raw data on channel 4. (c) Fringe-jump corrected line density.

Image of FIG. 7.
FIG. 7.

Schematic of KSTAR ECE system.

Image of FIG. 8.
FIG. 8.

KSTAR plasma data (shot 794).

Image of FIG. 9.
FIG. 9.

Assembled FRLPA before the installation at the horizontal port of the KSTAR machine and the probe head in the FRLPA.

Image of FIG. 10.
FIG. 10.

Schematic of resistive bolometer system.


Generic image for table
Table I.

Density measurement range of -mode reflectometry as a function of the toroidal magnetic field intensity.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Diagnostics for first plasma and development plan on KSTAR