PPPL-3566 is available in <a href="PPPL-3566.pdf">pdf</a> or 
<a href="PPPL-3566.ps">postscript</a> formats.

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<b>Mode Conversion Heating Scenarios for the National Compact Stellarator Experiment</b>
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<b>Authors:</b> R. Majeski, J.R. Wilson, and M. Zarnstorff

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<b>Date of PPPL Report:</b> May 2001
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<b>Presented at:</b> the 14th Topical Conference on Applications of Radio Frequency Powers in Plasmas in Oxnard, CA, May 7-9, 2001. Proceedings to be published by the American Institute of Physics (AIP). </p>


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Radio-frequency heating scenarios for the National Compact Stellarator eXperiment (NCSX) are considered. The focus here is on mode conversion from the fast to the slow ion Bernstein wave as either an electron or "bulk" ion heating technique, using a high-field side launch to directly access the ion-ion hybrid layer. Modeling for the planned parameters of NCSX [R<sub>ave</sub> ~ 1.4 m, a<sub>ave</sub> ~ 0.4 m, B<sub>T</sub>(0) ~ 1.2-2T, n<sub>e</sub>(0) ~ 2-5x10<sup>19</sup> m<sup>-3</sup>, T<sub>e</sub>(0) ~ T<sub>i</sub>(0) ~ 1-2 keV] for mode conversion in D-H and D-<sup>3</sup>He plasmas is presented. Possible types of high-field side antennas are also briefly discussed.


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