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Kugel, H.W.; Maingi, R.; Bell, M.; Blanchard, W.; Gates, D.; Gernhardt, R.; Holoman, T.; Labik, G.; Provost, T.; Roquemore, A.L.; Sichta, P.
Princeton Plasma Physics Lab., Princeton, NJ (United States). Funding organisation: USDOE Office of Science (United States)2007
Princeton Plasma Physics Lab., Princeton, NJ (United States). Funding organisation: USDOE Office of Science (United States)2007
AbstractAbstract
[en] The NSTX GDC system has been improved by replacing one of the two fixed anodes with a Movable GDC Probe (MGP) anode that can be inserted 1.2 m to about midway between the inner and outer vessel walls. The purpose was to provide more spatially uniform HeGDC for improving discharge stability and reliability. The MGP has been used reliably between every discharge during the last two NSTX experimental campaigns. It has also been used to apply HeGDC assisted boronization, and more recently, HeGDC assisted lithiumization. The MGP has contributed to improved NSTX performance during long pulse and H-mode discharges, and enabled a faster discharge repetition rate.
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14 Jun 2007; 8 p; SOFE2007: 22. Symposium on Fusion Engineering; Albuquerque, NM (United States); 17-21 Jun 2007; ACO2-76CHO3073; Also available from OSTI as DE00960421; PURL: https://www.osti.gov/servlets/purl/960421-8FTlP5/; Proceedings of 22nd Symposium on Fusion Engineering
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