Applying Alpha-Channeling to Mirror Machines

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The α-channeling effect entails the use of radio-frequency waves to expel and cool high-energetic α- particles born in a fusion reactor; the device reactivity can then be increased even further by redirecting the extracted energy to fuel ions. Originally proposed for tokamaks, this technique has also been shown to benefi t open-ended fusion devices. Here, the fundamental theory and practical aspects of α- channeling in mirror machines are reviewed, including the influence of magnetic field inhomogeneity and the effect of a finite wave region on the α-channeling mechanism. For practical implementation of the α -channeling effect in mirror geometry, suitable ... continued below

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Zhmoginov, A. I. & Fisch, N. J. March 16, 2012.

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Description

The α-channeling effect entails the use of radio-frequency waves to expel and cool high-energetic α- particles born in a fusion reactor; the device reactivity can then be increased even further by redirecting the extracted energy to fuel ions. Originally proposed for tokamaks, this technique has also been shown to benefi t open-ended fusion devices. Here, the fundamental theory and practical aspects of α- channeling in mirror machines are reviewed, including the influence of magnetic field inhomogeneity and the effect of a finite wave region on the α-channeling mechanism. For practical implementation of the α -channeling effect in mirror geometry, suitable contained weakly-damped modes are identifi ed. In addition, the parameter space of candidate waves for implementing the α -channeling effect can be signi cantly extended through the introduction of a suitable minority ion species that has the catalytic effect of moderating the transfer of power from the α-channeling wave to the fuel ions.

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  • Physics of Plasmas (March 2012)

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  • Report No.: PPPL-4746
  • Grant Number: DE-ACO2-09CH11466
  • DOI: 10.2172/1063123 | External Link
  • Office of Scientific & Technical Information Report Number: 1063123
  • Archival Resource Key: ark:/67531/metadc835121

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  • March 16, 2012

Added to The UNT Digital Library

  • May 19, 2016, 9:45 a.m.

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  • June 28, 2016, 12:14 p.m.

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Zhmoginov, A. I. & Fisch, N. J. Applying Alpha-Channeling to Mirror Machines, report, March 16, 2012; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc835121/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.