Experiments with electron bernstein waves at the wega stellarator

H. P. Laqua, D. Andruczyk, S. Marsen, M. Otte, Y. Y. Podoba, G. B. Warr, J. Preinhealter, J. Urban

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper reports about electron Bernstein wave (EBW) heating and current drive experiments at 2.45 GHz and experimental set-up for 28 GHz at the WEGA Stellarator. The device allows continuous plasma operation for a magnetic field of up to 0.5 T. For the 2.45 GHz the OXB mode conversion could be investigated in detail by HF-probes. The results were consistent with full wave simulations. The propagation of EBWs was calculated by a 3D- ray-tracing code for both 2.45 GHz and 28 GHz. The results were confirmed by the measurement of the local resonant power deposition with the power modulation technique. The predicted EBW driven toroidal current for the 2.45 GHz could be clearly detected experimentally by total and local measurement. For the 28 GHz a waveguide and antenna system, which is optimized for OXB-conversion, was build-up.

Original languageEnglish (US)
Title of host publicationProceedings of the 15th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating, EC-15
PublisherWorld Scientific Publishing Co. Pte Ltd
Pages149-154
Number of pages6
ISBN (Print)9812814639, 9789812814630
DOIs
StatePublished - 2009
Externally publishedYes
Event15th Joint Workshop on Electron Cyclotron Emission, ECE 2008 and Electron Cyclotron Heating, ECH 2008 - Yosemite Village, CA, United States
Duration: Mar 10 2008Mar 13 2008

Publication series

NameProceedings of the 15th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating, EC-15

Other

Other15th Joint Workshop on Electron Cyclotron Emission, ECE 2008 and Electron Cyclotron Heating, ECH 2008
CountryUnited States
CityYosemite Village, CA
Period3/10/083/13/08

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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    Laqua, H. P., Andruczyk, D., Marsen, S., Otte, M., Podoba, Y. Y., Warr, G. B., Preinhealter, J., & Urban, J. (2009). Experiments with electron bernstein waves at the wega stellarator. In Proceedings of the 15th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating, EC-15 (pp. 149-154). (Proceedings of the 15th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating, EC-15). World Scientific Publishing Co. Pte Ltd. https://doi.org/10.1142/9789812814647_0019