High Harmonic Fast Wave Heating Experiments on NSTX

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A radio frequency (rf) system has been installed on the National Spherical Torus Experiment (NSTX) with the aim of heating the plasma and driving plasma current. The system consists of six rf transmitters, a twelve element antenna and associated transmission line components to distribute and couple the power from the transmitters to the antenna elements in a fashion to allow control of the antenna toroidal wavenumber spectrum. To date, power levels up to 3.85 MW have been applied to the NSTX plasmas. The frequency and spectrum of the rf waves has been selected to heat electrons via Landau damping and ... continued below

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284 Kilobytes pages

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Wilson, J.R.; Bell, R.; Bitter, M.; Bonoli, P. & al, et November 16, 2000.

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Description

A radio frequency (rf) system has been installed on the National Spherical Torus Experiment (NSTX) with the aim of heating the plasma and driving plasma current. The system consists of six rf transmitters, a twelve element antenna and associated transmission line components to distribute and couple the power from the transmitters to the antenna elements in a fashion to allow control of the antenna toroidal wavenumber spectrum. To date, power levels up to 3.85 MW have been applied to the NSTX plasmas. The frequency and spectrum of the rf waves has been selected to heat electrons via Landau damping and transit time magnetic pumping. The electron temperature has been observed to increase from 400 to 900 eV with little change in plasma density resulting in a plasma stored energy of 59 kJ and a toroidal beta, bT , =10% and bn = 2.7.

Physical Description

284 Kilobytes pages

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INIS; OSTI as DE00768660

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  • 18th International Atomic Energy Agency's (IAEA) Fusion Energy Conference (FEC-2000), Sorrento (IT), 10/04/2000--10/10/2000

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  • Report No.: PPPL-3516
  • Grant Number: AC02-76CH03073
  • Office of Scientific & Technical Information Report Number: 768660
  • Archival Resource Key: ark:/67531/metadc723054

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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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  • November 16, 2000

Added to The UNT Digital Library

  • Sept. 29, 2015, 5:31 a.m.

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  • April 15, 2016, 7:33 p.m.

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Wilson, J.R.; Bell, R.; Bitter, M.; Bonoli, P. & al, et. High Harmonic Fast Wave Heating Experiments on NSTX, article, November 16, 2000; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc723054/: accessed December 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.