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The deteriorating effect of plasma density fluctuations on microwave beam quality

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JournalEPJ Web of Conferences
DateIn preparation - 24 May 2018
DatePublished (current) - 25 Mar 2019
Issue number01005
Volume203
Original languageEnglish

Abstract

Turbulent plasma edge density fluctuations can broaden a traversing microwave beam degrading its quality. This can be a problem for scenarios relying on a high spatial localization of the deposition of injected microwave power, like controlling MHD instabilities. Here we present numerical estimations of the scattering of a microwave beam by density fluctuations over a large parameter range, including extrapolations to ITER. Two codes are used, the full-wave code IPF-FDMC and the wave kinetic equation solver WKBeam. A successful comparison between beam broadening obtained from DIII-D experiments and corresponding full-wave simulations is shown.

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© The Authors, published by EDP Sciences.

EPJ Web of Conferences, EC-20 2018 Proceedings

    Research areas

  • physics.plasm-ph

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