Recent Physics Results from NSTX Metadata

Title

• Main Title Recent Physics Results from NSTX

Creator

• Author: Menard, J. E.
  Creator Type: Personal
• Author: Bell, M. G.
  Creator Type: Personal
• Author: Bell, R. E.
  Creator Type: Personal
• Author: Bialek, J. M.
  Creator Type: Personal
• Author: Boedo, J. A.
  Creator Type: Personal
• Author: Bush, C. E.
  Creator Type: Personal
• Author: Crocker, N. A.
  Creator Type: Personal
• Author: Diem, S.
  Creator Type: Personal
• Author: Ferron, J. R.
  Creator Type: Personal
• Author: Fredrickson, E. D.
  Creator Type: Personal
• Author: Gates, D. A.
  Creator Type: Personal
• Author: Hill, K. W.
  Creator Type: Personal
• Author: Hosea, J. C.
  Creator Type: Personal
• Author: Kaye, S. M.
  Creator Type: Personal
• Author: Kessel, C. E.
  Creator Type: Personal
• Author: Kubota, S.
  Creator Type: Personal
• Author: Kugel, H. W.
  Creator Type: Personal
• Author: LeBlanc, B. P.
  Creator Type: Personal
• Author: Lee, K. C.
  Creator Type: Personal
• Author: Levinton, F. M.
  Creator Type: Personal
• Author: Maingi, R.
  Creator Type: Personal
• Author: Mansfield, D. K.
  Creator Type: Personal
• Author: Majeski, R. P.
  Creator Type: Personal
• Author: Maqueda, R. J.
  Creator Type: Personal
• Author: Mazzucato, E.
  Creator Type: Personal
• Author: Medley, S. S.
  Creator Type: Personal
• Author: Mueller, D.
  Creator Type: Personal
• Author: Park, H. K.
  Creator Type: Personal
• Author: Paul, S. F.
  Creator Type: Personal
• Author: Peebles, W. A.
  Creator Type: Personal
• Author: Raman, R.
  Creator Type: Personal
• Author: Sabbagh, S. A.
  Creator Type: Personal
• Author: Skinner, C. H.
  Creator Type: Personal
• Author: Smith, D. R.
  Creator Type: Personal
• Author: Sontag, A. C.
  Creator Type: Personal
• Author: Soukhanovskii, V. A.
  Creator Type: Personal
• Author: Stratton, B. C.
  Creator Type: Personal
• Author: Stutman, D.
  Creator Type: Personal
• Author: Taylor, G.
  Creator Type: Personal
• Author: Tritz, K.
  Creator Type: Personal
• Author: Wilson, J. R.
  Creator Type: Personal
• Author: Yuh, H.
  Creator Type: Personal
• Author: Zhu, W.
  Creator Type: Personal
• Author: Zweben, S. J.
  Creator Type: Personal

Contributor

• Sponsor: United States. Department of Energy.
  Contributor Type: Organization

Publisher

• Name: Lawrence Livermore National Laboratory
  Place of Publication: Livermore, California
  Additional Info: Lawrence Livermore National Laboratory (LLNL), Livermore, CA

Date

• Creation: 2006-10-05

Language

• English

Description

• Content Description: The National Spherical Torus Experiment (NSTX) has made considerable progress in advancing the scientific understanding of high performance long-pulse plasmas needed for ITER and future low-aspect-ratio Spherical Torus (ST) devices. Plasma durations up to 1.6s (5 current redistribution times) have been achieved at plasma currents of 0.7 MA with non-inductive current fractions above 65% while achieving {beta}{sub T} and {beta}{sub N} values of 16% and 5.7 (%mT/MA), respectively. Newly available Motional Stark Effect data has allowed systematic study and validation of current drive sources and improved the understanding of ''hybrid''-like scenarios. In MHD research, six mid-plane ex-vessel radial field coils have been utilized to infer and correct intrinsic error fields, provide rotation control, and actively stabilize the n=1 resistive wall mode at ITER-relevant low plasma rotation values. In transport and turbulence, the low aspect ratio and wide range of achievable {beta} in NSTX provide unique data for confinement scaling studies. A new high-k scattering diagnostic is investigating turbulent density fluctuations with wavenumbers extending from ion to electron gyro-scales. In the area of energetic particle research, cyclic neutron rate drops have been associated with the destabilization of multiple large Toroidal Alfven Eigenmodes (TAEs) similar to the ''sea-of-TAE'' modes predicted for ITER. Three wave coupling processes between energetic particle modes and TAEs have also been observed for the first time. In boundary physics, advanced shape control has been utilized to study the role of magnetic balance in H-mode access and ELM stability. Peak divertor heat flux has been reduced by a factor of 5 using an H-mode compatible radiative divertor, and Lithium conditioning has demonstrated particle pumping and improved thermal confinement. Finally, non-solenoidal plasma start-up research is particularly important for the ST, and Coaxial Helicity Injection has now produced 160kA plasma currents on closed magnetic flux surfaces.
• Physical Description: PDF-file: 14 pages; size: 1.5 Mbytes

Subject

• Keyword: Heat Flux
• Keyword: Iaea
• Keyword: Magnetic Balances
• STI Subject Categories: 70 Plasma Physics And Fusion Technology
• Keyword: Physics
• Keyword: Lithium
• Keyword: Magnetic Flux
• Keyword: Electric Currents
• Keyword: Aspect Ratio
• Keyword: Thermonuclear Reactors
• Keyword: Stark Effect

Source

• Conference: Presented at: 21st IAEA Fusion Energy Conference, Chengdu, China, Oct 16 - Oct 21, 2006

Collection

• Name: Office of Scientific & Technical Information Technical Reports
  Code: OSTI

Institution

• Name: UNT Libraries Government Documents Department
  Code: UNTGD

Resource Type

• Article

Format

• Text

Identifier

• Report No.: UCRL-CONF-225102
• Grant Number: W-7405-ENG-48
• Office of Scientific & Technical Information Report Number: 900160
• Archival Resource Key: ark:/67531/metadc881678