Upgrade of the DIII-D RF systems

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Description

The DIII-D Advanced Tokamak Program requires the ability to modify the current density profile for extended time periods in order to achieve the improved plasma conditions now achieved with transient means. To support this requirement DIII-D has just completed a major addition to its ion cyclotron range of frequency (ICRF) systems. This upgrade project added two new fast wave current drive (FWCD) systems, with each system consisting of a 2 MW, 30 to 120 MHz transmitter, an all ceramic insulated transmission line, and water-cooled four-strap antenna. With this addition of 4 MW of FWCD power to the original 2 MW, ... continued below

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8 p.

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Callis, R. W.; Cary, W. P. & O`Neill, R. C. October 1, 1995.

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Description

The DIII-D Advanced Tokamak Program requires the ability to modify the current density profile for extended time periods in order to achieve the improved plasma conditions now achieved with transient means. To support this requirement DIII-D has just completed a major addition to its ion cyclotron range of frequency (ICRF) systems. This upgrade project added two new fast wave current drive (FWCD) systems, with each system consisting of a 2 MW, 30 to 120 MHz transmitter, an all ceramic insulated transmission line, and water-cooled four-strap antenna. With this addition of 4 MW of FWCD power to the original 2 MW, 30 to 60 MHz capability, experiments can be performed with centrally localized current drive enhancement. For off-axis current modification, plans are in place to add 110 GHz electron cyclotron heating (ECH) power to DIII-D. Initially, 3 MW of power will be available with plans to increase the power to 6 MW and to 10 MW.

Physical Description

8 p.

Notes

INIS; OSTI as DE97003852

Source

  • 16. IEEE/NPSS symposium on fusion engineering, Champaign, IL (United States), 1-5 Oct 1995

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  • Other: DE97003852
  • Report No.: GA--A22145
  • Report No.: CONF-950905--54
  • Grant Number: AC03-89ER51114;AC05-96OR22464;W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 464160
  • Archival Resource Key: ark:/67531/metadc676854

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • October 1, 1995

Added to The UNT Digital Library

  • July 25, 2015, 2:21 a.m.

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  • Aug. 1, 2016, 1:11 p.m.

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Callis, R. W.; Cary, W. P. & O`Neill, R. C. Upgrade of the DIII-D RF systems, article, October 1, 1995; United States. (digital.library.unt.edu/ark:/67531/metadc676854/: accessed September 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.