Assessment of electron-cyclotron-current-drive-assisted operation in DEMO

E. Poli, E. Fable, G. Tardini, H. Zohm, D. Farina, L. Figini, N.B. Marushchenko, L. Porte

Research output: Contribution to conferencePaper

Abstract

The achievable efficiency for external current drive through electron-cyclotron (EC) waves in a demonstration tokamak reactor is discussed. Two possible reactor designs, one for steady state and one for pulsed operation, are considered. It is found that for midplane injection the achievable current drive efficiency is limited by second-harmonic absorption at levels consistent with previous studies. Propagation through the second-harmonic region can be reduced by moving the launch position to the high-field side (this can be obtained by injecting the beam from an upper port in the vacuum vessel). In this case, beam tracing calculations deliver values for the EC current drive efficiency approaching those usually reported for neutral beam current drive. © Owned by the authors, published by EDP Sciences, 2012.
Original languageEnglish
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event17th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating, EC 2011 - , Netherlands
Duration: 1 Jan 2012 → …

Conference

Conference17th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating, EC 2011
CountryNetherlands
Period1/1/12 → …

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Poli, E., Fable, E., Tardini, G., Zohm, H., Farina, D., Figini, L., ... Porte, L. (2012). Assessment of electron-cyclotron-current-drive-assisted operation in DEMO. Paper presented at 17th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating, EC 2011, Netherlands. https://doi.org/10.1051/epjconf/20123201005