The role of the neutral beam fueling profile in the performance of the Tokamak Fusion Test Reactor and other tokamak plasmas

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Description

Scalings for the stored energy and neutron yield, determined from experimental data are applied to both deuterium-only and deuterium-tritium plasmas in different neutral beam heated operational domains in Tokamak Fusion Test Reactor. The domain of the data considered includes the Supershot, High poloidal beta, Low-mode, and limiter High-mode operational regimes, as well as discharges with a reversed magnetic shear configuration. The new important parameter in the present scaling is the peakedness of the heating beam fueling profile shape. Ion energy confinement and neutron production are relatively insensitive to other plasma parameters compared to the beam fueling peakedness parameter and the ... continued below

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31 p.

Creation Information

Park, H. K.; Batha, S. & Sabbagh, S. A. February 1997.

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  • Park, H. K.
  • Batha, S. Princeton Univ., NJ (United States). Princeton Plasma Physics Lab.
  • Sabbagh, S. A. Princeton Univ., NJ (United States). Princeton Plasma Physics Lab.

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Description

Scalings for the stored energy and neutron yield, determined from experimental data are applied to both deuterium-only and deuterium-tritium plasmas in different neutral beam heated operational domains in Tokamak Fusion Test Reactor. The domain of the data considered includes the Supershot, High poloidal beta, Low-mode, and limiter High-mode operational regimes, as well as discharges with a reversed magnetic shear configuration. The new important parameter in the present scaling is the peakedness of the heating beam fueling profile shape. Ion energy confinement and neutron production are relatively insensitive to other plasma parameters compared to the beam fueling peakedness parameter and the heating beam power when considering plasmas that are stable to magnetohydrodynamic modes. However, the stored energy of the electrons is independent of the beam fueling peakedness. The implication of the scalings based on this parameter is related to theoretical transport models such as radial electric field shear and Ion Temperature Gradient marginality models. Similar physics interpretation is provided for beam heated discharges on other major tokamaks.

Physical Description

31 p.

Notes

Also available from the following url: http://www.pppl.gov. See PPPL reports section for full text.; OSTI as DE97051920

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  • Other Information: PBD: Feb 1997

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  • Other: DE97051920
  • Report No.: PPPL--3238
  • Grant Number: AC02-76CH03073;FG02-89ER53297
  • DOI: 10.2172/304146 | External Link
  • Office of Scientific & Technical Information Report Number: 304146
  • Archival Resource Key: ark:/67531/metadc678681

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  • February 1997

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • April 15, 2016, 8:24 p.m.

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Park, H. K.; Batha, S. & Sabbagh, S. A. The role of the neutral beam fueling profile in the performance of the Tokamak Fusion Test Reactor and other tokamak plasmas, report, February 1997; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc678681/: accessed October 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.