Comparing simulated and experimental spectral line splitting in visible spectroscopy diagnostics in the HL-2A tokamak

Jing WU; Yongqin DU; Peng CHEN; Hangyu ZHOU; Yumei HOU; Lieming YAO

doi:10.1088/2058-6272/ac910d

Plasma Science and Technology > 2023 > 25(2): 025104. > DOI: 10.1088/2058-6272/ac910d

Jing WU, Yongqin DU, Peng CHEN, Hangyu ZHOU, Yumei HOU, Lieming YAO. Comparing simulated and experimental spectral line splitting in visible spectroscopy diagnostics in the HL-2A tokamak[J]. Plasma Science and Technology, 2023, 25(2): 025104. DOI: 10.1088/2058-6272/ac910d

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Comparing simulated and experimental spectral line splitting in visible spectroscopy diagnostics in the HL-2A tokamak

1.
University of Electronic Science and Technology of China, Chengdu 610054, People's Republic of China
2.
Southwestern Institute of Physics, Chengdu 610041, People's Republic of China

More Information

Corresponding author:
Jing WU, E-mail: wujing@uestc.edu.cn

Lieming YAO, E-mail: ylm@uestc.edu.cn
Received Date: April 13, 2022
Revised Date: September 04, 2022
Accepted Date: September 08, 2022
Available Online: December 05, 2023
Published Date: January 05, 2023

Graphical Abstract

Abstract

Abstract

We established the passive-visible spectroscopy diagnostics (P-VSD) and active-VSD (A-VSD) spectral splitting models for the HL-2A tokamak. Spectral splitting due to the influence of electromagnetic fields on the spectra in VSD is studied. Zeeman splitting induced by the magnetic field (B) is used to distinguish reflected light overlap in the divertor for P-VSD. Stark splitting caused by the Lorentz electric field (E_Lorentz) from the neutral beam injection particle's interaction with the magnetic field (V_beam×B) is used to measure the safety factor q profile for A-VSD. We give a comparison and error analysis by fitting the experimental spectra with the simulation results. The distinguishing of edge (scrape-off layer and divertor) hydrogen/deuterium spectral lines and the q profile derived from the spectra provides a reference for HL-2M VSD.
- visible spectroscopy diagnostics,
- stark splitting,
- Zeeman splitting,
- wavelength broaden

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Acknowledgments

This work is supported by the National Key Research and Development Program of China (No. 2019YFE03020004) and National Natural Science Foundation of China (No. 12175228).

References (51)

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