Comparative study between the reflective optics and lens based system for microwave imaging system on KSTAR

Journal Article · Fri Oct 15 04:00:00 EDT 2010 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.3491189· OSTI ID:22058706

Lee, W; Yun, G S; Nam, Y; Hong, I; Kim, J B; Park, H K ^[1]; Tobias, B; Liang, T; Domier, C W; Luhmann, Jr, N C ^[2]

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1. POSTECH, Pohang, Gyeongbuk 790-784 (Korea, Republic of)
2. University of California at Davis, Davis, California 95616 (United States)

Recently, two-dimensional microwave imaging diagnostics such as the electron cyclotron emission imaging (ECEI) system and microwave imaging reflectometry (MIR) have been developed to study magnetohydrodynamics instabilities and turbulence in magnetically confined plasmas. These imaging systems utilize large optics to collect passive emission or reflected radiation. The design of this optics can be classified into two different types: reflective or refractive optical systems. For instance, an ECEI/MIR system on the TEXTOR tokamak [Park et al., Rev. Sci. Instrum. 75, 3787 (2004)] employed the reflective optics which consisted of two large mirrors, while the TEXTOR ECEI upgrade [B. Tobias et al., Rev. Sci. Instrum. 80, 093502 (2009)] and systems on DIII-D, ASDEX-U, and KSTAR adopted refractive systems. Each system has advantages and disadvantages in the standing wave problem and optical aberrations. In this paper, a comparative study between the two optical systems has been performed in order to design a MIR system for KSTAR.

• OSTI ID: 22058706
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 10 Vol. 81; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ASDEX TOKAMAK
CYCLOTRONS
DESIGN
DOUBLET-3 DEVICE
ELECTRON EMISSION
MAGNETOHYDRODYNAMICS
MICROWAVE RADIATION
OPTICAL SYSTEMS
PLASMA CONFINEMENT
PLASMA INSTABILITY
REFRACTION
STANDING WAVES
TEXTOR TOKAMAK
TURBULENCE