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Split Point Analysis and Uncertainty Quantification of Thermal-Optical Organic/Elemental Carbon Measurements

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A new calibration code for the JET polarimeter.

M Gelfusa¹, A Murari, P Gaudio

¹Associazione EURATOM-ENEA-University of Rome Tor Vergata, 00133 Roma, Italy.

The Review of Scientific Instruments

|June 10, 2010

Summary

This summary is machine-generated.

A new equivalent model for the Joint European Torus (JET) polarimeter enhances calibration accuracy. This improved model ensures consistent plasma measurements, validated against advanced codes and diagnostics.

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Area of Science:

Plasma physics
Fusion energy research
Diagnostic instrumentation

Background:

Previous Joint European Torus (JET) polarimeter models had limitations in fitting procedures for calibrated results.
Accurate plasma measurements are crucial for fusion energy research and understanding plasma behavior.

Purpose of the Study:

To develop an improved equivalent model for the JET polarimeter that overcomes drawbacks of previous calibration fitting procedures.
To ensure consistent and reliable plasma measurements from the JET polarimeter.

Main Methods:

Simulated signal processing electronics to verify performance within original specifications.
Implemented effective optical paths for vertical and lateral chords to generate calibration curves.
Developed a unique, consistent calibration procedure applicable to manual calibrations.

Main Results:

The new model produced calibration curves and derived plasma measurements.
Results showed good agreement with advanced full wave propagation codes.
The procedure was benchmarked successfully with other JET diagnostics.

Conclusions:

The enhanced JET polarimeter model provides a robust and consistent method for plasma calibration.
The devised procedure is effective for recent experimental campaigns, including high-current scenarios.
This advancement contributes to more reliable plasma diagnostics in fusion research.