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Prater, R.; Austin, M.E.; Bernabei, S.
General Atomics, San Diego, CA (United States); Univ. of Texas, Austin, TX (United States); Princeton Plasma Physics Lab., NJ (United States); Oak Ridge National Lab., TN (United States). Funding organisation: USDOE Office of Energy Research, Washington, DC (United States)1998
General Atomics, San Diego, CA (United States); Univ. of Texas, Austin, TX (United States); Princeton Plasma Physics Lab., NJ (United States); Oak Ridge National Lab., TN (United States). Funding organisation: USDOE Office of Energy Research, Washington, DC (United States)1998
AbstractAbstract
[en] Initial experiments on heating and current drive using second harmonic electron cyclotron heating (ECH) are being performed on the DIII-D tokamak using the new 110 GHz ECH system. Modulation of the ECH power in the frequency range 50 to 300 Hz and detection of the temperature perturbation by ECE diagnostics is used to validate the location of the heating. This technique also determines an upper bound on the width of the deposition profile. Analysis of electron cyclotron current drive indicates that up to 0.17 MA of central current is driven, resulting in a negative loop voltage near the axis
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Jan 1998; 7 p; 2. Europhysics topical conference on RF heating and current drive of fusion devices; Brussels (Belgium); 20-23 Jan 1998; CONF-980130--; CONTRACT AC03-89ER51114; FG03-96ER54373; AC02-76CH03073; AC05-96OR22464; ALSO AVAILABLE FROM OSTI AS DE98003185; NTIS; INIS; US GOVT. PRINTING OFFICE DEP
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