OVERVIEW OF H-MODE PEDESTAL RESEARCH ON DIII-D

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Developing an understanding of the processes that control the H-mode transport barrier is motivated by the significant impact this small region (typically <2% of the minor radius) can have on overall plasma performance. Conditions at the inner edge of the H-mode transport barrier can strongly influence the overall energy confinement, and the maximum density, and therefore fusion power, that can be achieved with the typically flat H-mode density profiles [1,2]. The ELM instability, which usually regulates the pressure gradient in the H-mode edge, can result in large power loads to, and erosion of, the divertor targets in a reactor scale ... continued below

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OSBORNE, T.H.; BURRELL, K.H.; CARLSTROM, T.N.; CHU, M.S.; DOYLE, E.J.; FERRON, J.R. et al. July 1, 2001.

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Developing an understanding of the processes that control the H-mode transport barrier is motivated by the significant impact this small region (typically <2% of the minor radius) can have on overall plasma performance. Conditions at the inner edge of the H-mode transport barrier can strongly influence the overall energy confinement, and the maximum density, and therefore fusion power, that can be achieved with the typically flat H-mode density profiles [1,2]. The ELM instability, which usually regulates the pressure gradient in the H-mode edge, can result in large power loads to, and erosion of, the divertor targets in a reactor scale device [3]. The goal of H-mode pedestal research at DIII-D is to: (1) develop a physics based model that would allow prediction of the conditions at the top of the H-mode pedestal, (2) develop an understanding of processes which control Type I ELM effects in the core and divertor, and (3) explore alternatives to the Type I ELM regime.

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Medium: X; Size: 7 pages

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Oakland Operations Office, Oakland, CA (US); INIS

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  • 28th European Physical Society Conference on Plasma Physics in Controlled Fusion, Madeira (PT), 06/18/2001--06/22/2001; Other Information: THIS IS A PREPRINT OF A PAPER TO BE PRESENTED AT THE 28TH EUROPEAN PHYSICAL SOCIETY CONFERENCE ON PLASMA PHYSICS IN CONTROLLED FUSION, MADEIRA, PORTUGAL, JUNE 18-22, 2001, AND TO BE PUBLISHED IN THE ''PROCEEDINGS''

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  • Report No.: NONE
  • Grant Number: AC03-99ER54463
  • Office of Scientific & Technical Information Report Number: 805253
  • Archival Resource Key: ark:/67531/metadc734869

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  • July 1, 2001

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  • Oct. 18, 2015, 6:40 p.m.

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  • April 19, 2016, 12:48 p.m.

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OSBORNE, T.H.; BURRELL, K.H.; CARLSTROM, T.N.; CHU, M.S.; DOYLE, E.J.; FERRON, J.R. et al. OVERVIEW OF H-MODE PEDESTAL RESEARCH ON DIII-D, article, July 1, 2001; United States. (digital.library.unt.edu/ark:/67531/metadc734869/: accessed July 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.