The Design of the Polychromator for Thomson Scattering Measurements on HT-7 Tokamak |
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| Authors: | Yang Li Zhao Junyu Fang Zishen )
Institute of Plasma Physics the Chinese Academy of Sciences Hefei China |
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| Affiliation: | Institute of Plasma Physics,the Chinese Academy of Sciences,Hefei 230031,China;Institute of Plasma Physics,the Chinese Academy of Sciences,Hefei 230031,China;Institute of Plasma Physics,the Chinese Academy of Sciences,Hefei 230031,China |
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| Abstract: | A five-channel polychromator, utilizing high performance interference filters, has been completed for Thomson scattering measurements on HT-7 tokamak. For our instrument, the range of electron temperature varies from 50 eV to 1.5 keV. According to this, the bandpass of the different interference filters are chosen. Unique features of the polychromator are high throughput,easy alignment, flexibility and compact size when compared with other alternatives. In this article,both the method of designing and the measured transmission curves for the polychromator are given. |
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| Keywords: | tokamak interference filter polychromator |
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