Actions for Determination of wall reflectivity for ECE frequencies in DIII-D [electronic resource].

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Determination of wall reflectivity for ECE frequencies in DIII-D [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy. Office of Energy Research, 1997.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
8 pages : digital, PDF file
Additional Creators
General Atomic Company, United States. Department of Energy. Office of Energy Research, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The significance of cyclotron radiation losses in next-generation tokamaks depends on the reflectivity of first wall materials. An experimental study of the effective reflectivity for electron cyclotron frequencies in the graphite-walled DIII-D tokamak is reported. Measurements of optically-thin harmonics (ω = nω{sub ce}, n > 4) are made for two polarizations from thermal plasma discharges using an absolutely calibrated Michelson interferometer. The reflectivity r and polarization transfer fraction p are obtained by matching measured spectra to simulations from an ECE radiation transport code with adjustable wall parameters. For the frequency range 150-400 GHz average values of r = 0.76 and p = 0.19 are found.
Report Numbers
E 1.99:ga--a22581
E 1.99: conf-970405--2
conf-970405--2
ga--a22581
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
05/01/1997.
"ga--a22581"
" conf-970405--2"
"DE97007206"
10. joint workshop on electron cyclotron emission and electron cyclotron resonance heating, Ameland (Netherlands), 6-11 Apr 1997.
Ellis, R.F.; Austin, M.E.; Luce, T.C.
Funding Information
AC03-89ER51114
FG03-96ER54373
FC03-86ER52126
View MARC record | catkey: 14741126