Design Study of a Line Integrated Thomson Scattering System for TST-2 Spherical Tokamak Device

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<p>A design study of a line integrated Thomson scattering (TS) system with a complete backscattering configuration has been performed to clarify practical problems. Installation on the TST-2 spherical tokamak was assumed, and an optical system design with ready-made components, are adopted. Some practical aspects, such as aberration, masking effect of the laser combining mirror, misalignment are investigated by ray tracing calculations. The performance of density profile reconstruction was also investigated. It was found that a tangential-multi-chord measurement configuration on the midplane shows a good effective localization, and error enhancement in the reconstruction is small. In addition, the efficiency of the system is about an order of magnitude larger than the present conventional TS system in TST-2. The attractiveness of the line integrated TS measurements was demonstrated.</p>

収録刊行物

  • Plasma and Fusion Research

    Plasma and Fusion Research 18 (0), 2402025-2402025, 2023-04-27

    一般社団法人 プラズマ・核融合学会

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