Measurement of multi-scale turbulence via E-band tunable ten-channel backscattering and one-channel forward-scattering integrated Doppler reflectometer on EAST
Abstract An E-band (60–90 GHz) tunable ten-channel backscattering and one-channel forward-scattering integrated Doppler reflectometer with X-mode polarization has been installed on the O port of the Experimental Advanced Superconducting Tokamak. The ten-channel backscattering system can launch 16 fixed microwave beams in the range of 60–90 GHz with an interval of 2 GHz into the plasma, and 10 probing signals are selected by employing a reference signal and multiple filters. It can measure the turbulence at 10 different radial locations simultaneously. In addition, by the backscattered and forward-scattered signals, this integrated system can measure multi-scale turbulence at the same location. During experiments, the frequency of the reference signals is tunable in the E-band, and the selected probing signals can be changed as needed in 100 <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mrow> <mml:mi>μ</mml:mi> <mml:mrow> <mml:mtext>s</mml:mtext> </mml:mrow> </mml:mrow> </mml:math> . 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 Δ k / k ⩽ 0.28. The scattering locations and the perpendicular wavenumber are calculated by ray tracing in the experiments.
Authors
- X. Zhong (ORCID: https://orcid.org/0000-0002-1751-111X)
- Zixi Liu (ORCID: https://orcid.org/0000-0002-3632-861X)
- Yanyi Zhang (ORCID: https://orcid.org/0000-0001-5238-1712)
- Mingyuan Wang (ORCID: https://orcid.org/0000-0003-2293-9513)
- Shifan Wang (ORCID: https://orcid.org/0000-0003-0103-9268)
- Adi Liu (ORCID: https://orcid.org/0000-0002-3164-7320)
- Feifei Long (ORCID: https://orcid.org/0000-0002-1008-6499)
- Hong Li (ORCID: https://orcid.org/0000-0002-6385-6354)
- Chu Zhou (ORCID: https://orcid.org/0000-0003-2928-242X)
- Shoubiao Zhang
- Shouxin Wang (ORCID: https://orcid.org/0000-0001-9600-4038)
- Jinlin Xie (ORCID: https://orcid.org/0000-0002-8902-672X)
- Shi Wenxiang (ORCID: https://orcid.org/0009-0005-7223-3748)
- Wenzhe Mao (ORCID: https://orcid.org/0000-0002-0676-8462)
- Wandong Liu (ORCID: https://orcid.org/0000-0003-3526-5079)
- Lifu Gao (ORCID: https://orcid.org/0000-0002-6922-557X)
- Tao Lan (ORCID: https://orcid.org/0000-0002-2785-5178)
- Liuxin Li (ORCID: https://orcid.org/0009-0009-6905-7121)
- Xuan Li (ORCID: https://orcid.org/0000-0003-1248-0518)
- Jin Zhang (ORCID: https://orcid.org/0000-0001-5462-3631)
- Xiaoying Chen (ORCID: https://orcid.org/0000-0001-7760-2905)
- G. Zhuang (ORCID: https://orcid.org/0000-0002-6048-8568)
- Sichun Qiu (ORCID: https://orcid.org/0009-0002-3642-6807)
- W. X. Ding (ORCID: https://orcid.org/0009-0006-6737-8376)
- Haiqing Liu (ORCID: https://orcid.org/0000-0001-6892-358X)
Institutions
- University of Science and Technology of China (CN)
- Shenzhen University (CN)
- Institute of Plasma Physics (CN)
- Shenzhen Technology University (CN)
- Anqing Normal University (CN)
Publication Details
- Journal
- Plasma Physics and Controlled Fusion
- Published
- 2025-05-16
- DOI
- https://doi.org/10.1088/1361-6587/add9cc
- Citations
- 1
- Primary Topic
- Ionosphere and magnetosphere dynamics
- Type
- article
- Field-Weighted Citation Impact
- 1.15
Funders
- National Natural Science Foundation of China
- Fundamental Research Funds for the Central Universities