Your browser doesn't support javascript.
loading
An eight-channel Doppler backscattering system in the experimental advanced superconducting tokamak.
Hu, J Q; Zhou, C; Liu, A D; Wang, M Y; Doyle, E J; Peebles, W A; Wang, G; Zhang, X H; Zhang, J; Feng, X; Ji, J X; Li, H; Lan, T; Xie, J L; Ding, W X; Liu, W D; Yu, C X.
Affiliation
  • Hu JQ; KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui Hefei 230026, China.
  • Zhou C; KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui Hefei 230026, China.
  • Liu AD; KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui Hefei 230026, China.
  • Wang MY; KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui Hefei 230026, China.
  • Doyle EJ; Physics and Astronomy Department and PSTI, University of California, Los Angeles, California 90095, USA.
  • Peebles WA; Physics and Astronomy Department and PSTI, University of California, Los Angeles, California 90095, USA.
  • Wang G; Physics and Astronomy Department and PSTI, University of California, Los Angeles, California 90095, USA.
  • Zhang XH; School of Computer and Information, Hefei University of Technology, Hefei, Anhui 230026, China.
  • Zhang J; KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui Hefei 230026, China.
  • Feng X; KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui Hefei 230026, China.
  • Ji JX; KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui Hefei 230026, China.
  • Li H; KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui Hefei 230026, China.
  • Lan T; KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui Hefei 230026, China.
  • Xie JL; KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui Hefei 230026, China.
  • Ding WX; KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui Hefei 230026, China.
  • Liu WD; KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui Hefei 230026, China.
  • Yu CX; KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui Hefei 230026, China.
Rev Sci Instrum ; 88(7): 073504, 2017 Jul.
Article de En | MEDLINE | ID: mdl-28764527
ABSTRACT
Doppler backscattering system can measure the perpendicular velocity and fluctuation amplitude of the density turbulence with intermediate wavenumber. An eight-channel Doppler backscattering system has been installed in the Experimental Advanced Superconducting Tokamak (EAST), which can probe eight different radial locations simultaneously by launching eight fixed frequencies (55, 57.5, 60, 62.5, 67.5, 70, 72.5, 75 GHz) into plasma. The quasi-optical system consists of circular corrugated waveguide transmission, a fixed parabolic mirror, and a rotatable parabolic mirror which are integrated with quasi-optics front-end of the profile reflectometer inside the vacuum vessel. The incidence angle can be chosen from 5° to 12°, and the wavenumber range is 2-15/cm with the wavenumber resolution Δk/k≤0.21. Ray tracing simulations are used to calculate the scattering locations and the perpendicular wavenumber. The dynamic range of this new eight-channel Doppler backscattering system can be as large as 40 dB in the EAST. In this article, the hardware design, the ray tracing, and the preliminary experimental results in the EAST will be presented.
Texte intégral
Ajouter à My VHL
Imprimer
XML
PubMed Links
Recherche sur Google

Texte intégral: 1 Collection: 01-internacional Base de données: MEDLINE Langue: En Journal: Rev Sci Instrum Année: 2017 Type de document: Article Pays d'affiliation: Chine
Texte intégral
Ajouter à My VHL
Imprimer
XML
PubMed Links
Recherche sur Google

Texte intégral: 1 Collection: 01-internacional Base de données: MEDLINE Langue: En Journal: Rev Sci Instrum Année: 2017 Type de document: Article Pays d'affiliation: Chine