Real-time protection of the ohmic heating coil force limits in DIII-D

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Description

The maximum safe operating limits of the DIII-D tokamak are determined by the force produced in the ohmic heating coil and the toroidal field coil during a plasma pulse. This force is directly proportional to the product of the current in the coils. Historically, the current limits for each coil were set statically before each pulse without regard for the time varying nature of the currents. In order to allow the full time-dependent capability of the ohmic coil to be used, a system was developed for monitoring the product of the currents dynamically and making appropriate adjustments in real time. ... continued below

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8 p.

Creation Information

Broesch, J.D.; Scoville, J.T.; Hyatt, A.W. & Coon, R.M. November 1, 1997.

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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

The maximum safe operating limits of the DIII-D tokamak are determined by the force produced in the ohmic heating coil and the toroidal field coil during a plasma pulse. This force is directly proportional to the product of the current in the coils. Historically, the current limits for each coil were set statically before each pulse without regard for the time varying nature of the currents. In order to allow the full time-dependent capability of the ohmic coil to be used, a system was developed for monitoring the product of the currents dynamically and making appropriate adjustments in real time. This paper discusses the purpose, implementation, and results of this work.

Physical Description

8 p.

Notes

INIS; OSTI as DE98003430

Source

  • 10. IEEE real time conference, Beaune (France), 22-26 Sep 1997

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  • Other: DE98003430
  • Report No.: GA--A22705
  • Report No.: CONF-9709140--
  • Grant Number: AC03-89ER51114
  • Office of Scientific & Technical Information Report Number: 645538
  • Archival Resource Key: ark:/67531/metadc695060

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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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Creation Date

  • November 1, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • April 18, 2016, 6:03 p.m.

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Broesch, J.D.; Scoville, J.T.; Hyatt, A.W. & Coon, R.M. Real-time protection of the ohmic heating coil force limits in DIII-D, article, November 1, 1997; San Diego, California. (digital.library.unt.edu/ark:/67531/metadc695060/: accessed December 15, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.