Refractive and Relativistic Effects on ITER Low Field Side Reflectometer Design
Authors: G. Wang, T.L. Rhodes, W.A. Peebles, R.W. Harvey, and R.V. Budny
Abstract:
The ITER low field side reflectometer faces some unique design challenges, among which are included the effect of relativistic electron temperatures and refraction of probing waves. This paper utilizes GENRAY, a 3- D ray tracing code, to investigate these effects. Using a simulated ITER operating scenario, characteristics of the reflected RF waves returning to the launch plane are quantified as a function of a range of design parameters, including antenna height, antenna size, and antenna radial position. Results for edge/SOL measurement with both O- and X-modes using proposed antennas are reported.
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Presented at: High Temperature Plasma Diagnostics Conference, Cape May, NJ (May 18-21, 2010)
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Download PPPL-4522 (pdf 363 KB 3 pp)
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