HIGH TIME-RESOLVED, 2-D IMAGING OF TYPE-1 ELMs IN DIII-D USING A IMAGE-INTENSIFIED CID CAMERA

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The evolution of 2-D emission profiles of D{sub {alpha}} and C III during type-I ELMs has been investigated in DIII-D using a tangentially viewing gated, intensified charge-injected device (CID) camera. The measured CIII emission profiles indicate transient inner leg attachment with the arrival of the ELM heat pulse. The measured D{sub {alpha}} emission profiles during an ELM cycle show enhanced deuterium recycling during the deposition of the ELM particle pulse at the target, which suggests the detachment of the divertor plasma from the target plates. Measurements taken in ELMy H-mode discharges at densities of 50% and 90% of the Greenwald ... continued below

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Medium: X; Size: 13 pages

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GROTH, M.; FENSTERMACHER, M.E.; BOEDO, J.A.; BROOKS,N.H.; GRAY, D.S.; LASNIER, C.J. et al. June 1, 2002.

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The evolution of 2-D emission profiles of D{sub {alpha}} and C III during type-I ELMs has been investigated in DIII-D using a tangentially viewing gated, intensified charge-injected device (CID) camera. The measured CIII emission profiles indicate transient inner leg attachment with the arrival of the ELM heat pulse. The measured D{sub {alpha}} emission profiles during an ELM cycle show enhanced deuterium recycling during the deposition of the ELM particle pulse at the target, which suggests the detachment of the divertor plasma from the target plates. Measurements taken in ELMy H-mode discharges at densities of 50% and 90% of the Greenwald density limit are compared utilizing the CID camera system and a comprehensive set of other divertor diagnostics. An ELM model based on fluid and PIC simulations is used to discuss the observation on the response of the divertor plasma to the ELM heat and particle pulse.

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Medium: X; Size: 13 pages

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

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  • 15th International Conference on Plasma Surface Interactions in Controlled Fusion Devices, Gifu (JP), 05/27/2002--05/31/2002; Other Information: This is a preprint of a paper presented at the 15th International Conference on Plasma Surface Interactions in Controlled Fusion Devices, May 27-31, 2002, in Gifu, Japan, 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: 804670
  • Archival Resource Key: ark:/67531/metadc737358

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  • June 1, 2002

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  • Oct. 18, 2015, 6:40 p.m.

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  • Jan. 3, 2017, 12:40 p.m.

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GROTH, M.; FENSTERMACHER, M.E.; BOEDO, J.A.; BROOKS,N.H.; GRAY, D.S.; LASNIER, C.J. et al. HIGH TIME-RESOLVED, 2-D IMAGING OF TYPE-1 ELMs IN DIII-D USING A IMAGE-INTENSIFIED CID CAMERA, article, June 1, 2002; United States. (digital.library.unt.edu/ark:/67531/metadc737358/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.