Use of an m=2, n=1 static error field correction coil, {open_quotes}The C-coil,{close_quotes} on DIII-D to avoid disruptive locked modes

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Minimizing resonant, static n = 1 error field with a phase steerable correction coil the C-coil, in DIII-D allows avoidance of disruptive locked modes. Alternatiely, increasing n = 1 error field in rapidly rotating plasmas can induce magnetic braking of rotation without locking for the study of the role of rotation on stability. Small toroidally asymmetric m = 2, n = 1 static field errors are of concern for the design of next-generation devices and for the operation of existing tokamaks. In low density ohmic plasmas for example, the torque of a small resonant error at the q = 2 ... continued below

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4 p.

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La Haye, R.J. & Scoville, J.T. May 1, 1995.

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  • General Atomic Company
    Publisher Info: General Atomics, San Diego, CA (United States)
    Place of Publication: San Diego, California

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Description

Minimizing resonant, static n = 1 error field with a phase steerable correction coil the C-coil, in DIII-D allows avoidance of disruptive locked modes. Alternatiely, increasing n = 1 error field in rapidly rotating plasmas can induce magnetic braking of rotation without locking for the study of the role of rotation on stability. Small toroidally asymmetric m = 2, n = 1 static field errors are of concern for the design of next-generation devices and for the operation of existing tokamaks. In low density ohmic plasmas for example, the torque of a small resonant error at the q = 2 surface can overcome the plasma inertial and/or viscous forces, stop the rotation and produce a large island which can cause disruption.

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4 p.

Notes

INIS; OSTI as DE96002700

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  • 22. European conference on controlled fusion and plasmas physics, Bournemouth (United Kingdom), 3-7 Jun 1995

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  • Other: DE96002700
  • Report No.: GA-A--22033
  • Report No.: CONF-9506282--2
  • Grant Number: AC03-89ER51114
  • Office of Scientific & Technical Information Report Number: 135140
  • Archival Resource Key: ark:/67531/metadc628450

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Office of Scientific & Technical Information Technical Reports

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  • May 1, 1995

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  • June 16, 2015, 7:43 a.m.

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  • April 18, 2016, 6:09 p.m.

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La Haye, R.J. & Scoville, J.T. Use of an m=2, n=1 static error field correction coil, {open_quotes}The C-coil,{close_quotes} on DIII-D to avoid disruptive locked modes, article, May 1, 1995; San Diego, California. (digital.library.unt.edu/ark:/67531/metadc628450/: accessed December 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.