Upgrades to the profile and Doppler reflectometer systems on EAST

POSTER

Abstract

The USTC reflectometer systems on the EAST Tokamak have been upgraded, including new Q- and V-band monostatic FMCW profile reflectometer systems with dynamic calibration, efficient transition lines with quasi-optical lenses and corrugated waveguides, dual polarization operation. The profile system is integrated with an 8-channel Doppler backscattering (DBS) system in a new flexible microwave front-end, and a second DBS system is at a separate toroidal location. The new systems cater for variable scenarios and allow for poloidal and toroidal turbulence correlations. We present the designs for these upgraded systems, system calibrations and measurements of the beam profile in laboratory, as well as the primary experimental results from EAST operation.\\[4pt] Work supported by the Natural Science Foundation of China 11475173, National Magnetic Confinement Fusion Energy Development Program of China 2013GB106002 and 2014GB109002, US DOE Grants DE- SC0010424 and DE-SC0010469, and China Scholarship Council [2014] 3026.

Authors

  • Jianqiang Hu

    • University of Science and Technology of China

  • Adi Liu

    • University of Science and Technology of China

  • E.J. Doyle

    • University of California, Los Angeles
    • UCLA

  • Guiding Wang

    • University of California, Los Angeles

  • Hong Li

    • University of Science and Technology of China

  • Chu Zhou

    • University of Science and Technology of China

  • Xiao Hui Zhang

    • University of Science and Technology of China

  • Ming Yuan Wang

    • University of Science and Technology of China

  • Jin Zhang

    • University of Science and Technology of China

  • Chang Xuan Yu

    • University of Science and Technology of China