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In-vessel visible inspection system on KSTAR
1National Fusion Research Institute, Gwahangno 113, Daejeon 305-333, Republic of Korea. jinil@nfri.re.kr
The Review of Scientific Instruments
|December 3, 2008
Summary
A new in-vessel visible inspection system monitors plasma formation and vessel damage in the Korean superconducting tokamak advanced research (KSTAR) device. This system provides crucial data for tokamak operations and maintenance.
Area of Science:
- Fusion energy research
- Plasma physics
- Materials science
Background:
- Tokamak devices require robust monitoring systems for internal components.
- Understanding plasma-wall interactions is critical for sustained fusion reactions.
Purpose of the Study:
- To design and implement an in-vessel visible inspection system for the KSTAR device.
- To monitor initial plasma formation and internal vacuum vessel damage.
Main Methods:
- Installation of four inspection illuminators and two visible/H-alpha TV cameras.
- Utilizing 150 W metal-halide lamps and progressive scan CCD cameras (1004x1004 at 48 fps, 640x480 at 210 fps).
- Remote control of lamps and cameras from the main control room, protected by shutters.
Main Results:
- Successful operation of the visible inspection system during the KSTAR first plasma campaign.
- Acquisition of images detailing Ohmic discharges and potential internal structure conditions.
- Demonstration of the system's capability to operate under various conditions.
Conclusions:
- The developed visible inspection system is effective for monitoring KSTAR operations.
- The system provides valuable insights into plasma behavior and vessel integrity.
- This technology contributes to the advancement of tokamak research and development.
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