Measurement of the optical depth at the third electron cyclotron harmonic in tore supra

The linear relativistic theory of electron cyclotron wave propagation predicts partial absorption of the extraordinary mode at the third electron cyclotron harmonic for typical parameters of present day tokamak plasmas. Since the waves are not totally damped, a quantitative confirmation of such predictions is important to establish this particular resonance scheme firmly for plasma heating and current drive. Specific experiments have been performed on Tore Supra, to measure the optical thickness of the third harmonic extraordinary mode for vertical propagation, over the full frequency spectrum. Comparison with ray tracing/absorption calculations provides a direct validation of the linear relativistic theory.


Published in:
Nuclear Fusion, 36, 2, 237-241
Year:
1996
ISSN:
0029-5515
ISBN:
0029-5515
Laboratories:
SPC
CRPP




 Record created 2008-04-16, last modified 2018-09-13


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