Fast wave heating and current drive in ELMing H-mode plasmas in DIII-D

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The DIII-D Fast Wave Current Drive (FWCD) program has concentrated on studying the basic physics of direct electron heating and current drive in low density L-mode discharges from its inception in 1991 through 1996. The more recent DIII-D FWCD work has been aimed at extension of the operating regimes of the experiments, including higher total power by combining FW with NB and 110 GHz ECH. Generally, these higher power levels result in H-mode confinement, and in a quasi-steady-state condition, Edge Localized Modes (ELMs). Over the past two years, the DIII-D FWCD systems have been modified to improve their capabilities under ... continued below

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5 p.

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Pinsker, R. I.; Cary, W. P.; de Grassie, J. S.; Petty, C. C.; Prater, R.; Baity, F. W. et al. July 1998.

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The DIII-D Fast Wave Current Drive (FWCD) program has concentrated on studying the basic physics of direct electron heating and current drive in low density L-mode discharges from its inception in 1991 through 1996. The more recent DIII-D FWCD work has been aimed at extension of the operating regimes of the experiments, including higher total power by combining FW with NB and 110 GHz ECH. Generally, these higher power levels result in H-mode confinement, and in a quasi-steady-state condition, Edge Localized Modes (ELMs). Over the past two years, the DIII-D FWCD systems have been modified to improve their capabilities under a wide range of dynamic antenna loading conditions, such as those characteristic of ELMing H-modes. In this paper, the first results of extending the FWCD studies to ELMing H-mode discharges are presented.

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5 p.

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INIS; OSTI as DE98007252

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  • 25. European Physical Society conference on controlled fusion and plasma physics, Prague (Czech Republic), 29 Jun - 3 Jul 1998

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  • Other: DE98007252
  • Report No.: GA--A22917
  • Report No.: CONF-980678--
  • Grant Number: AC03-89ER51114;AC05-96OR22464;AC02-76CH03073
  • Office of Scientific & Technical Information Report Number: 639763
  • Archival Resource Key: ark:/67531/metadc692288

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • July 1998

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  • Aug. 14, 2015, 8:43 a.m.

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  • Aug. 1, 2016, 6:45 p.m.

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Pinsker, R. I.; Cary, W. P.; de Grassie, J. S.; Petty, C. C.; Prater, R.; Baity, F. W. et al. Fast wave heating and current drive in ELMing H-mode plasmas in DIII-D, article, July 1998; San Diego, California. (digital.library.unt.edu/ark:/67531/metadc692288/: accessed November 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.