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An E-band multi-channel Doppler backscattering system on EAST.
Liu, S; Zhou, C; Liu, A D; Zhuang, G; Feng, X; Zhang, J; Zhong, X M; Ji, J X; Zhang, S B; Liu, H Q; Wang, S X; Fan, H R; Wang, S F; Gao, L T; Shi, W X; Chen, X Y; Liu, W D.
Afiliação
  • Liu S; School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Zhou C; School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Liu AD; School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Zhuang G; School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Feng X; Shenzhen University, Shenzhen, Guangdong 518061, China.
  • Zhang J; School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Zhong XM; School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Ji JX; School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Zhang SB; Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230021, China.
  • Liu HQ; Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230021, China.
  • Wang SX; Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230021, China.
  • Fan HR; School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Wang SF; School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Gao LT; School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Shi WX; School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Chen XY; School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Liu WD; School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China.
Rev Sci Instrum ; 94(12)2023 Dec 01.
Article em En | MEDLINE | ID: mdl-38109469
ABSTRACT
An E-band (60-90 GHz) multi-channel Doppler backscattering (DBS) system with X-mode polarization has been installed on the Experimental Advanced Superconducting Tokamak (EAST), which can measure the turbulence at five different radial locations simultaneously. This system can launch 31 fixed microwave frequencies in the range of 60-90 GHz with a 1 GHz interval into the plasma, and five probing signals are selected by employing a reference signal and multiple filters. During experiments, the frequency of the reference signal is tunable in the E-band, and the selected probing signals can be changed as needed without any other adjustments, which can be performed in one shot or between shots. Furthermore, the incident angle can be adjusted from -10° to 20°, and the wavenumber range is 4-25 cm-1 with a wavenumber resolution of Δk/k ≤ 0.35. Ray tracing simulations are employed to calculate the scattering locations and the perpendicular wavenumber. In this article, the hardware design, ray tracing, and initial results obtained from the EAST plasma will be presented.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2023 Tipo de documento: Article
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2023 Tipo de documento: Article