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Anisotropic electron temperature measurements without knowing the spectral transmissivity for a JT-60SA Thomson scattering diagnostic

JT-60SAトムソン散乱計測における分光透過率を用いずに行う非等方性電子温度の計測

東條 寛; 波多江 仰紀; 谷塚 英一; 伊丹 潔

Tojo, Hiroshi; Hatae, Takaki; Yatsuka, Eiichi; Itami, Kiyoshi

This paper focuses on a method to measure $$T_{rm e}$$ without knowing transmissivity using Thomson scattering diagnostic with a double-pass scattering configuration. Effect of installation errors about the scattering angle to accuracy in $$T_{rm e}$$ is discussed. Application of this method to measure anisotropic $$T_{rm e}$$, i.e. $$T_{rm e}$$ about the parallel ($$T_{rm e ||}$$) and perpendicular ($$T_{rm e perp}$$) directions for the magnetic field, is proposed. Although large statistical errors are expected because of correspondences between the scattered spectra from the first and second pass, stable accuracy appears in the area with $$T_{rm e perp}/T_{rm e ||} > 0.5$$ in the core measurements of JT-60SA.

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パーセンタイル:100

分野:Instruments & Instrumentation

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