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in creator/contributor: "Watkins, J. G."  
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Compatibility of the Radiating Divertor with High Performance Plasmas in DIII-D

Description: A radiating divertor approach was successfully applied to high performance 'hybrid' plasmas [M.R. Wade, et al., Proc. 20th IAEA Fusion Energy Conf., Vilamoura, (2004)]. Our technique included: (1) injecting argon near the outer divertor target, (2) enhancing the plasma flow into the inner and outer divertors by a combination of particle pumping and deuterium gas puffing upstream of the divertor targets, and (3) isolating the inner divertor from the outer by a structure in the private flux regio… more
Date: May 18, 2006
Creator: Petrie, T. W.; Wade, M. R.; Brooks, N. H.; Fenstermacher, M. E.; Groth, M.; Hyatt, A. W. et al.
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Partner: UNT Libraries Government Documents Department
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Variation of Particle Control with Changes in Divertor Geometry

Description: Recent experiments on DIII-D point to the importance of two factors in determining how effectively the deuterium particle inventory in a tokamak plasma can be controlled through pumping at the divertor target(s): (1) the divertor magnetic balance, i.e., the degree to which the divertor topology is single-null (SN) or double-null (DN), and (2) the direction of the of Bx{divergent}B ion drift with respect to the X-point(s). Changes in divertor magnetic balance near the DN shape have a much strong… more
Date: October 18, 2004
Creator: Petrie, T. W.; Allen, S. L.; Brooks, N. H.; Fenstermacher, M. E.; Ferron, J. R.; Greenfield, C. M. et al.
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Partner: UNT Libraries Government Documents Department
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Suppression of Large Edge Localized Modes with a Stochastic Magnetic Boundary in High Confinement DIII-D Plasmas

Description: Large sub-millisecond heat pulses due to Type-I ELMs have been reproducibly eliminated in DIII-D for periods approaching 7 energy confinement times with small dc currents driven in a simple magnetic perturbation coil. The current required to eliminate all but a few isolated Type-I ELM impulses during a perturbation coil pulse lasting several seconds is less than 0.4% of plasma current. Based on vacuum magnetic field line modeling, perturbation fields from the coil resonate strongly with plasma … more
Date: October 18, 2004
Creator: Evans, T. E.; Moyer, R. A.; Watkins, J. G.; Osborne, T. H.; Thomas, P. R.; Becoulet, M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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