Experimental Tests Of Paleoclassical Transport

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Predictions of the recently developed paleoclassical transport model are compared with data from many toroidal plasma experiments: electron heat diffusivity in DIII-D, C-Mod and NSTX ohmic and near-ohmic plasmas; transport modeling of DIII-D ohmic-level discharges and of the RTP ECH 'stair-step' experiments with eITBs at low order rational surfaces; investigation of a strong eITB in JT-60U; H-mode Te edge pedestal properties in DIII-D; and electron heat diffusivities in non-tokamak experiments (NSTX/ST, MST/RFP, SSPX/spheromak). The radial electron heat transport predicted by the paleoclassical model is found to agree with a wide variety of ohmic-level experimental results and to set the lower ... continued below

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Callen, J D; Anderson, J K; Arlen, T C; Bateman, G; Budny, R V; Fujita, T et al. September 12, 2006.

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Predictions of the recently developed paleoclassical transport model are compared with data from many toroidal plasma experiments: electron heat diffusivity in DIII-D, C-Mod and NSTX ohmic and near-ohmic plasmas; transport modeling of DIII-D ohmic-level discharges and of the RTP ECH 'stair-step' experiments with eITBs at low order rational surfaces; investigation of a strong eITB in JT-60U; H-mode Te edge pedestal properties in DIII-D; and electron heat diffusivities in non-tokamak experiments (NSTX/ST, MST/RFP, SSPX/spheromak). The radial electron heat transport predicted by the paleoclassical model is found to agree with a wide variety of ohmic-level experimental results and to set the lower limit (within a factor {approx} 2) for the radial electron heat transport in most resistive, current-carrying toroidal plasmas -- unless it is exceeded by fluctuation-induced transport, which often occurs in the edge of L-mode plasmas and when the electron temperature is high ({approx}>T{sub e}{sup crit} {approx}B{sup 2/3}{bar {alpha}}{sup 1/2} keV) because then paleoclassical transport becomes less than gyro-Bohm-level anomalous transport.

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PDF-file: 10 pages; size: 0.5 Mbytes

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  • Journal Name: Nuclear Fusion, vol. 47, n/a, October 10, 2007, pp. 1449; Journal Volume: 47

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  • Report No.: UCRL-JRNL-224385
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 919609
  • Archival Resource Key: ark:/67531/metadc893768

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  • September 12, 2006

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  • Sept. 27, 2016, 1:39 a.m.

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  • Dec. 5, 2016, 3:31 p.m.

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Callen, J D; Anderson, J K; Arlen, T C; Bateman, G; Budny, R V; Fujita, T et al. Experimental Tests Of Paleoclassical Transport, article, September 12, 2006; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc893768/: accessed September 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.