Measurements of edge density profile modifications during IBW on TFTR

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Ion Bernstein wave (IBW) antennas are known to have substantial localized effects on the plasma edge. To allow better understanding and measurement of these effects, the TFTR edge reflectometer has been relocated to the new IBW antenna. This move was facilitated by the incorporation of a diagnostic access tube in the IBW antenna identical to the original diagnostic tube in the fast-wave (FW) antenna. This allowed the reflectometer launcher to simply be moved from the old FW antenna to the new IBW antenna. Only a moderate extension of the waveguide transmission line was required to reconnect the reflectometer to the ... continued below

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5 p.

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Hanson, G. R.; Bush, C. E. & Wilgen, J. B. June 1, 1997.

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Description

Ion Bernstein wave (IBW) antennas are known to have substantial localized effects on the plasma edge. To allow better understanding and measurement of these effects, the TFTR edge reflectometer has been relocated to the new IBW antenna. This move was facilitated by the incorporation of a diagnostic access tube in the IBW antenna identical to the original diagnostic tube in the fast-wave (FW) antenna. This allowed the reflectometer launcher to simply be moved from the old FW antenna to the new IBW antenna. Only a moderate extension of the waveguide transmission line was required to reconnect the reflectometer to the launcher in its new location. Edge density profile modification during IBW experiments has been observed. Results from IBW experiments will be presented and contrasted to the edge density modifications previously observed during FW heating experiments.

Physical Description

5 p.

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INIS; OSTI as DE97006310

Medium: P; Size: 5 p.

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  • 12. topical conference on radio frequency power in plasmas, Savannah, GA (United States), 1-3 Apr 1997

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  • Other: DE97006310
  • Report No.: CONF-9704102--9
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 485978
  • Archival Resource Key: ark:/67531/metadc677251

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Office of Scientific & Technical Information Technical Reports

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  • June 1, 1997

Added to The UNT Digital Library

  • July 25, 2015, 2:21 a.m.

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  • April 13, 2017, 12:29 p.m.

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Hanson, G. R.; Bush, C. E. & Wilgen, J. B. Measurements of edge density profile modifications during IBW on TFTR, article, June 1, 1997; Tennessee. (digital.library.unt.edu/ark:/67531/metadc677251/: accessed October 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.