Microwave imaging reflectometry studies for turbulence diagnostics on KSTAR

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

DOI:https://doi.org/10.1063/1.3499606· OSTI ID:22055832

Park, H K; Hong, I; Kim, M; Yun, G S; Lee, W; Kim, J ^[1]; Tobias, B; Domier, C W; Luhmann, Jr, N C ^[2]; Kim, K W ^[3]

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1. Pohang University of Science and Technology, Pohang, Gyeongbuk 790-784 (Korea, Republic of)
2. University of California at Davis, Davis, California 95616 (United States)
3. Kyungbuk University, Gyeongbuk 702-701 (Korea, Republic of)

The first prototype microwave imaging reflectometry (MIR) system [H. Park et al., Rev. Sci. Instrum. 74, 4239 (2004)] clearly demonstrated the shortcomings of conventional reflectometry when the probe beam encountered a large amplitude and/or high fluctuation wavenumber at the reflection layer in laboratory tests, the distinctive advantages shown in these tests were not fully realized in the plasma operation. To understand the discrepancies, the MIR system performance has been thoroughly investigated at POSTECH. In this paper, a possible cause of the MIR performance degradation on TEXTOR will be presented together with a concept of multifrequency MIR system design that will be developed for KSTAR.

• OSTI ID: 22055832
• 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

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
AMPLITUDES
BEAMS
FLUCTUATIONS
MICROWAVE RADIATION
PERFORMANCE
PLASMA
PLASMA DIAGNOSTICS
PROBES
REFLECTION
TEXTOR TOKAMAK
TURBULENCE