Edge Turbulence Imaging on NSTX and Alcator C-Mod

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Description

Edge turbulence images have been made using an ultra-high speed CCD camera on both NSTX and Alcator C-Mod. In both cases, the D-alpha or HeI (587.6 nm) line emission from localized deuterium or helium gas puffs was viewed along a local magnetic field line near the outer midplane. Fluctuations in this line emission reflect fluctuations in electron density and/or electron temperature through the atomic excitation rates, which can be modeled using the DEGAS-2 code. The 2-D structure of the measured turbulence can be compared with theoretical simulations based on 3-D fluid models.

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354 Kilobytes pages

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Zweben, S.J.; Maqueda, R.A.; Terry, J.L.; Bai, B.; Boswell, C.J.; Bush, C.E. et al. July 10, 2002.

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Description

Edge turbulence images have been made using an ultra-high speed CCD camera on both NSTX and Alcator C-Mod. In both cases, the D-alpha or HeI (587.6 nm) line emission from localized deuterium or helium gas puffs was viewed along a local magnetic field line near the outer midplane. Fluctuations in this line emission reflect fluctuations in electron density and/or electron temperature through the atomic excitation rates, which can be modeled using the DEGAS-2 code. The 2-D structure of the measured turbulence can be compared with theoretical simulations based on 3-D fluid models.

Physical Description

354 Kilobytes pages

Notes

INIS; OSTI as DE00808283

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  • Other Information: PBD: 10 Jul 2002

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  • Report No.: PPPPL-3723
  • Grant Number: AC02-76CH03073
  • DOI: 10.2172/808283 | External Link
  • Office of Scientific & Technical Information Report Number: 808283
  • Archival Resource Key: ark:/67531/metadc740614

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  • July 10, 2002

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  • Oct. 18, 2015, 6:40 p.m.

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  • April 15, 2016, 9:58 p.m.

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Zweben, S.J.; Maqueda, R.A.; Terry, J.L.; Bai, B.; Boswell, C.J.; Bush, C.E. et al. Edge Turbulence Imaging on NSTX and Alcator C-Mod, report, July 10, 2002; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc740614/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.