The Physics of Tokamak Start-up

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Tokamak start-up on present-day devices usually relies on inductively induced voltage from a central solenoid. In some cases inductive startup is assisted with auxiliary power from electron cyclotron radio frequency heating. ITER, the National Spherical Torus eXperiment Upgrade and JT60, now under construction, will make use of the understanding gained from present-day devices to ensure successful start-up. Design of a spherical tokamak (ST) with DT capability for nuclear component testing would require an alternative to a central solenoid because the small central column in an ST has insufficient space to provide shielding for the insulators in the solenoid. Alternative start-up ... continued below

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Mueller, D. November 13, 2012.

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Tokamak start-up on present-day devices usually relies on inductively induced voltage from a central solenoid. In some cases inductive startup is assisted with auxiliary power from electron cyclotron radio frequency heating. ITER, the National Spherical Torus eXperiment Upgrade and JT60, now under construction, will make use of the understanding gained from present-day devices to ensure successful start-up. Design of a spherical tokamak (ST) with DT capability for nuclear component testing would require an alternative to a central solenoid because the small central column in an ST has insufficient space to provide shielding for the insulators in the solenoid. Alternative start-up techniques such as induction using outer poloidal field coils, electron Bernstein wave start-up, coaxial helicity injection and point source helicity injection have been used with success, but require demonstration of scaling to higher plasma current.

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  • Physics of Plasmas (December 2012)

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  • Report No.: PPPL-4836
  • Grant Number: DE-ACO2-09CH11466
  • DOI: 10.2172/1057465 | External Link
  • Office of Scientific & Technical Information Report Number: 1057465
  • Archival Resource Key: ark:/67531/metadc832058

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  • November 13, 2012

Added to The UNT Digital Library

  • May 19, 2016, 9:45 a.m.

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  • July 8, 2016, 2:51 p.m.

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Mueller, D. The Physics of Tokamak Start-up, report, November 13, 2012; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc832058/: accessed December 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.