Effects of asymmetry and target location on microwave imaging reflectometry

Journal Article · Fri Oct 01 04:00:00 EDT 2004 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.1788850· OSTI ID:20636757

Ignatenko, M; Mase, A; Bruskin, L G; Kogi, Y; Hojo, H ^[1]

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1. Art, Science and Technology Center for Cooperative Research, Kyushu University, Kasuga 816-8580 (Japan)

In this article we perform a numerical study of microwave imaging reflectometry (MIR) and compare it with conventional reflectometry system. As an approximation to the reflections by real plasma fluctuations, a corrugated wheel is used. As far as general performance is concerned, our simulations confirm the results by Munsat et al. [Plasma Phys. Controlled Fusion 45, 469 (2003)] that the MIR system reproduces shape of corrugation far from the wheel while conventional systems fail to do so. We addressed the effects of asymmetry and defocusing of the wheel-reflectometer system as well as spectral sensitivity of the imaging reflectometer. For a particular geometry we estimated the deterioration of the MIR performance due to misalignments and existence of broadband fluctuation000.

• OSTI ID: 20636757
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 10 Vol. 75; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ASYMMETRY
FLUCTUATIONS
NUMERICAL ANALYSIS
PERFORMANCE
PLASMA DIAGNOSTICS
PLASMA SIMULATION
SENSITIVITY