Carbon charge exchange analysis in the ITER-like wall environment
S Menmuir1, C Giroud2, T M Biewer3
1Association EURATOM-VR, Department of Fusion Plasma Physics, KTH Royal Institute of Technology, Stockholm, Sweden.
The Review of Scientific Instruments
|November 29, 2014
Summary
Charge exchange spectroscopy analysis for fusion plasmas needs revision due to changes observed with the ITER-like wall at JET. This study revises the spectral line description for accurate carbon charge exchange diagnostics.
Area of Science:
- Fusion energy research
- Plasma physics diagnostics
- Atomic and molecular spectroscopy
Background:
- Charge exchange spectroscopy is a crucial diagnostic for fusion plasmas.
- Existing analysis is optimized for Carbon Plasma-Facing Components.
- The ITER-like wall at JET alters spectral characteristics.
Purpose of the Study:
- To investigate spectral changes in the Carbon charge exchange line at 529.06 nm.
- To revise the core charge exchange analysis for this specific line.
- To provide an updated description of spectral lines for analysis.
Main Methods:
- Investigated the spectral region under various plasma conditions.
- Analyzed spectral data from JET with the ITER-like wall.
- Developed a revised description of spectral lines for analysis.
Main Results:
- Observed significant changes in the spectrum around the Carbon charge exchange line (529.06 nm).
- Identified the need for a revised analytical approach.
- Presented an updated spectral line description.
Conclusions:
- The ITER-like wall necessitates a revision of charge exchange spectroscopy analysis.
- Accurate diagnostics require updated spectral line descriptions.
- This work provides a revised framework for analyzing carbon charge exchange spectra in fusion devices.
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