Beam Distribution Modification By Alfven Modes

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Description

Modification of a deuterium beam distribution in the presence of low amplitude Toroidal Alfven (TAE) eigenmodes and Reversed Shear Alfven (RSAE) eigenmodes in a toroidal magnetic confinement device is examined. Comparison with experimental data shows that multiple low amplitude modes can account for significant modification of high energy beam particle distributions. It is found that there is a stochastic threshold for beam transport, and that the experimental amplitudes are only slightly above this threshold. The modes produce a substantial central flattening of the beam distribution.

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R. B. White, N. Gorelenkov, W. W. Heidbrink, and M.A. Van Zeeland January 25, 2010.

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Modification of a deuterium beam distribution in the presence of low amplitude Toroidal Alfven (TAE) eigenmodes and Reversed Shear Alfven (RSAE) eigenmodes in a toroidal magnetic confinement device is examined. Comparison with experimental data shows that multiple low amplitude modes can account for significant modification of high energy beam particle distributions. It is found that there is a stochastic threshold for beam transport, and that the experimental amplitudes are only slightly above this threshold. The modes produce a substantial central flattening of the beam distribution.

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201kb

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  • Report No.: PPPL-4483
  • Grant Number: DE-ACO2-09CH11466
  • Office of Scientific & Technical Information Report Number: 971204
  • Archival Resource Key: ark:/67531/metadc930808

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Office of Scientific & Technical Information Technical Reports

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  • January 25, 2010

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 12, 2016, 8:47 p.m.

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R. B. White, N. Gorelenkov, W. W. Heidbrink, and M.A. Van Zeeland. Beam Distribution Modification By Alfven Modes, report, January 25, 2010; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc930808/: accessed September 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.