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Updated: May 17, 2026
10:53
Simultaneous Measurement of Turbulence and Particle Kinematics Using Flow Imaging Techniques
Published on: March 12, 2019
C-III flow measurements with a coherence imaging spectrometer.
T R Weber1, S L Allen, J Howard
1Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
The Review of Scientific Instruments
|November 7, 2012
Summary
This study presents a new spectrometer for measuring Carbon III (CIII) flow in the DIII-D tokamak divertor. The device enables 2D flow reconstruction, offering insights into plasma dynamics.
Area of Science:
- Plasma Physics
- Spectroscopy
- Fusion Energy Research
Background:
- Understanding plasma flow in fusion devices is crucial for confinement.
- The DIII-D lower divertor is a key area for studying plasma-wall interactions.
Purpose of the Study:
- To develop and demonstrate a coherence imaging spectrometer for spatially resolved CIII flow measurements.
- To reconstruct a 2D poloidal cross-section of CIII flow in the DIII-D lower divertor.
Main Methods:
- Utilized a periscope view for plasma observation.
- Employed line-of-sight averaged velocity measurements of CIII.
- Applied tomographic reconstruction to obtain 2D flow profiles.
Main Results:
- Successfully measured CIII flow in the DIII-D lower divertor.
- Reconstructed a 2D poloidal cross-section of CIII flow.
- Demonstrated the diagnostic's capability for detailed plasma flow analysis.
Conclusions:
- The coherence imaging spectrometer is a viable tool for divertor plasma flow studies.
- The technique provides valuable data for fusion energy research.
- Future applications include enhanced plasma control and understanding of divertor physics.
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