Optics System Design of Microwave Imaging Reflectometry for the EAST Tokamak

ZHU Yilun (朱逸伦); ZHAO Zhenling (赵朕领); TONG Li (仝丽); CHEN Dongxu (陈东旭); XIE Jinlin (谢锦林); LIU Wandong (刘万东)

doi:10.1088/1009-0630/18/4/20

Plasma Science and Technology > 2016 > 18(4): 449-452. > DOI: 10.1088/1009-0630/18/4/20

ZHU Yilun (朱逸伦), ZHAO Zhenling (赵朕领), TONG Li (仝丽), CHEN Dongxu (陈东旭), XIE Jinlin (谢锦林), LIU Wandong (刘万东). Optics System Design of Microwave Imaging Reflectometry for the EAST Tokamak[J]. Plasma Science and Technology, 2016, 18(4): 449-452. DOI: 10.1088/1009-0630/18/4/20

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Optics System Design of Microwave Imaging Reflectometry for the EAST Tokamak

Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China

Funds: supported by the National Magnetic Confinement Fusion Energy Program of China (Nos. 2009GB107001 and 2014GB109002)

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Received Date: May 04, 2015

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Abstract

Abstract

A front-end optics system has been developed for the EAST microwave imaging reflectometry for 2D density fluctuation measurement. Via the transmitter optics system, a com?bination of eight transmitter beams with independent frequencies is employed to illuminate wide poloidal regions on eight distinct cutoff layers. The receiver optics collect the reflected wavefront and project them onto the vertical detector array with 12 antennas. Utilizing optimized Field Curvature Adjustment lenses in the receiver optics, the front-end optics system provides a flexible and perfect matching between the image plane and a specified cutoff layer in the plasma, which ensures the correct data interpretation of density fluctuation measurement.
- density measurement,
- multi-dimension,
- microwave diagnostic,
- optics lens

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References

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