Electron Cyclotron Emission Diagnostics on ITER

ORAL

Abstract

Electron cyclotron emission (ECE) will be employed on ITER to measure the radial profile of electron temperature and non thermal features of the electron distribution as well as measurements of ELMs, magnetic islands, high frequency instabilities, and turbulence. There are two quasioptical systems, designed with Gaussian beam analysis. One view is radial, primarily for temperature profile measurement, the other views at a small angle to radial for measuring non-thermal emission. Radiation is conducted to by a long corrugated waveguide to a multichannel Michelson interferometer which provides wide wavelength coverage but limited time response as well as two microwave radiometers which cover the fundamental and second harmonic ECE and provide excellent time response. Measurements will be made in both X and O mode. In-situ calibration is provided by a novel hot calibration source. We discuss spatial resolution and the implications for physics studies.

*Supported by the U.S.-IPO, ITER Organization, and the USDoE.

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Authors

  • R.F. Ellis

    • University of Maryland
    • Univ. of MD

  • M.E. Austin

    • University of Texas
    • UT-Austin

  • Perry Phillips

    • University of Texas

  • W.L. Rowan

    • University of Texas
    • FRC UT
    • The University of Texas at Austin
    • FRC-UT Austin
    • Fusion Research Center, The Univ. of Texas at Austin

  • J. Beno

    • University of Texas
    • CEM-UTA

  • Abelhamid Auroua

    • University of Texas

  • Russ Feder

    • PPPL
    • Princeton Plasma Physics Lab

  • Ashish Patel

    • PPPL

  • A.E. Hubbard

    • PSFC-MIT
    • PSFC MIT
    • PSFC - MIT
    • MIT
    • MIT Plasma Science and Fusion Center

  • Hitesh Pandya

    • IPR India