Quasi-optics design of the dual-array ECE imaging system on the EAST Tokamak

被引：18

作者：

Luo, C. ^{[1
]}

Tobias, B. J. ^{[2
]}

Gao, B. ^{[1
]}

Zhu, Y. ^{[1
]}

Xie, J. ^{[1
]}

Domier, C. W. ^{[3
]}

Luhmann, N. C. ^{[3
]}

Lan, T. ^{[1
]}

Liu, A. ^{[1
]}

Li, H. ^{[1
]}

Yu, C. ^{[1
]}

Liu, W. ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China

[2] Princeton Plasma Phys Lab, Princeton, NJ 08540 USA

[3] Univ Calif Davis, Davis, CA 95616 USA

来源：

JOURNAL OF INSTRUMENTATION | 2014年 / 9卷

关键词：

Nuclear instruments and methods for hot plasma diagnostics; Plasma diagnostics - interferometry; spectroscopy and imaging;

D O I：

10.1088/1748-0221/9/12/P12014

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A novel large aperture quasi-optical imaging system is designed for the new dual-array electron cyclotron emission (ECE) imaging (ECEI) instrument on the EAST tokamak. The zoom doublet scheme is used in the microwave imaging system on a super-conducting tokamak for the first time, and the focal plane can reach the high magnetic field side region even in the narrowest zoom configuration. The best spatial resolution in the vertical direction is 1.1 cm and the maximum vertical coverage can reach 80 cm. The field curvature is largely reduced in the narrow zoom configuration by the parabolic correction of a single lens surface. The imaging performance is fully characterized in the laboratory, and the characterized beam patterns show good agreements with the Gaussian beam specifications in the simulation results of the design.

引用

页数：17

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