Simultaneous Reconstruction of Magnetic Field, Electron Density and Electron Temperature of Burning Plasmas by Using Laser Polarimetry

偏振态的变化近似于两个基本过程的叠加，即法拉第效应和Cotton-Mouton效应。在燃烧等离子体的高电子温度的等离子体中，法拉第效应降低，而Cotton-Mouton效应增强。本研究表明，通过利用长波长的测量数据同时重构法拉第和Cotton-Mouton效应的电流密度、电子密度和电子温度，可以获得大的Cotton-Mouton效应。然而，未来的反应堆需要在更少的诊断下运行。这项研究表明，多参数测量使用激光偏振显示未来的反应堆的承诺。

The change in the polarization state approximates the superposition of the two fundamental processes, the Faraday effect and the Cotton-Mouton effect. In plasma with a high electron temperature of burning plasma, the Faraday effect is degraded, whereas the Cotton-Mouton effect is enhanced. This study demonstrated that the simultaneous reconstruction of the current density, the electron density and the electron temperature from the measurement data for the Faraday and Cotton-Mouton effects by using long wavelengths to obtain a large Cotton-Mouton effect.Existing fusion experimental devices use many diagnostics. However, a future reactor needs to be operated with fewer diagnostics. This study suggests that multi-parameter measurement using laser polarimetry shows promise for future reactors.