Modeling of far SOL plasma transport in NSTX

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For better understanding and characterization of non-diffusive transport occurring in the NSTX tokamak edge plasma, we performed extensive simulations of NSTX edge plasmas with the multi-fluid two-dimensional UEDGE code by using realistic model for impurity sputtering sources and hybrid model for anomalous cross-field transport. Our cross-field transport model incorporates the effects of non-diffusive intermittent transport by introducing anomalous convective velocities whose spatial profile is adjusted for each ion charge state to match available experimental data. The research in 2002-2005 financial years was focused on the following areas: (i) development of capabilities for UEDGE simulation of NSTX spectroscopy data (i.e., the ... continued below

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Krasheninnikov, Sergei & Pigarov, Alexander November 2, 2005.

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Description

For better understanding and characterization of non-diffusive transport occurring in the NSTX tokamak edge plasma, we performed extensive simulations of NSTX edge plasmas with the multi-fluid two-dimensional UEDGE code by using realistic model for impurity sputtering sources and hybrid model for anomalous cross-field transport. Our cross-field transport model incorporates the effects of non-diffusive intermittent transport by introducing anomalous convective velocities whose spatial profile is adjusted for each ion charge state to match available experimental data. The research in 2002-2005 financial years was focused on the following areas: (i) development of capabilities for UEDGE simulation of NSTX spectroscopy data (i.e., the 3D real-geometry postprocessor UEDGE tools for comparison between UEDGE and experimental data), (ii) simulation of multi-diagnostic data from NSTX with UEDGE, (iii) study of anomalous cross-field convective transport of impurity ions, (iv) analysis of divertor plasma opacity to resonance radiation, and (v) study the effects of ballooning-like anomalous cross-field transport and spherical-torus magnetic configuration on parallel plasma flows in the SOL.

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252 kb

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  • Report No.: DOE/ER54680-1 Final Report
  • Grant Number: FG02-02ER54680
  • DOI: 10.2172/1068679 | External Link
  • Office of Scientific & Technical Information Report Number: 1068679
  • Archival Resource Key: ark:/67531/metadc842534

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  • November 2, 2005

Added to The UNT Digital Library

  • May 19, 2016, 9:45 a.m.

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  • Dec. 9, 2016, 10:18 p.m.

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Krasheninnikov, Sergei & Pigarov, Alexander. Modeling of far SOL plasma transport in NSTX, report, November 2, 2005; United States. (digital.library.unt.edu/ark:/67531/metadc842534/: accessed November 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.