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Systematic and routine analysis of radial correlation reflectometry data in JET
António C A Figueiredo1, António Fonseca, Luís Meneses
1Instituto de Plasmas e Fusão Nuclear, Associação Euratom-IST, 1049-001 Lisboa, Portugal. antonio@ipfn.ist.utl.pt
The Review of Scientific Instruments
|December 17, 2008
Summary
A new tool analyzes radial correlation reflectometry data from JET, calculating correlation length and reflection. This aids diagnostic operators in understanding plasma behavior, particularly in ITB plasmas.
Area of Science:
- Plasma physics
- Fusion energy research
- Diagnostic data analysis
Background:
- Radial correlation reflectometry is crucial for diagnosing plasma properties.
- Analysis of JET data requires specialized tools for accurate interpretation.
- Understanding plasma turbulence and confinement is key to fusion energy development.
Purpose of the Study:
- To introduce a novel tool for analyzing radial correlation reflectometry data from the JET tokamak.
- To enable offline calculation of correlation length and coherent reflection from raw diagnostic signals.
- To support diagnostic operators in real-time and post-shot analysis.
Main Methods:
- Development of a specialized offline analysis tool.
- Verification using controlled tests with theoretical signals.
- Validation through case studies of Internal Transport Barrier (ITB) plasmas in JET.
Main Results:
- The tool accurately calculates correlation length and coherent reflection from reflectometry data.
- Controlled tests confirmed the tool's reliability with synthetic data.
- Successful application to analyze ITB plasmas in JET, demonstrating practical utility.
Conclusions:
- The developed tool is effective for analyzing radial correlation reflectometry data in JET.
- It enhances the diagnostic capabilities for studying plasma phenomena like ITBs.
- This tool will aid future research in fusion plasma physics and diagnostics.
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