研究目的
To test and verify the reliability of the SOS code with respect to BES and MSE by matching MSE spectrum simulation results with real experimental results, and to assess the radial electric field Er and the safety factor q in plasma control and impurity transport processes.
研究成果
The simulation spectral results largely conform to experimental spectra. The results demonstrate good consistency between the simulation prediction and the real fitting. The SOS code has been used to predict the radial distribution of the safety factor and the SNR of CX and BES. The results of this paper offer meaningful input in the design of ITER MSE systems.
研究不足
The small toroidal magnetic field and the use of only one NBI source make it difficult to observe the BES line splitting and to precisely measure the pitch angle or safety factor. Improving the spatial and temporal resolution is also a challenge.
1：Experimental Design and Method Selection:
The SOS simulation code was used to predict the BES and MSE spectra, and optimize instrument performance. The modular structure of the SOS code involves the fusion device, impurity description, target plasma, neutral beam, and instrumentation performance.
2：Sample Selection and Data Sources:
Based on the HL-2A real experimental running parameters, the SOS code was used to simulate BES and MSE spectra.
3：List of Experimental Equipment and Materials:
The HL-2A tokamak with its diagnostic systems including BES, MSE, and others.
4：Experimental Procedures and Operational Workflow:
The simulation spectra and experimental spectra were obtained by SOS and a fitting algorithm. This algorithm compares spectral lines and determines whether the fitted results and the simulation lines are consistent.
5：Data Analysis Methods:
The results from the experimental diagnostics were compared to the results obtained in the simulation executed by the SOS code.
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