Now showing items 1-15 of 15

    • Application of a particle, momentum and energy balance model to calculate the structure of the edge pedestal in DIII-D 

      Stacey, Weston M.; Groebner, Richard J. (Georgia Institute of TechnologyAmerican Institute of Physics, 2005-04)
      A calculation of edge density and temperature profiles based on "classical" physics - particle, momentum and energy balance, heat conduction closure relations, neutral particle transport - yielded a pedestal structure ...
    • Comparison of neoclassical rotation theory with experiment under a variety of conditions in DIII-D 

      Stacey, Weston M.; Mandrekas, John (Georgia Institute of TechnologyAmerican Institute of Physics, 2002-03)
      A neoclassical theory of gyroviscous radial momentum transport and poloidal and toroidal rotation has been compared with experiment in DIII-D discharges in different confinement regimes, with a range of neutral beam powers ...
    • Compartative fuel cycle analysis of critical and sub-critical fast reactor transmutation systems 

      Stacey, Weston M.; Hoffman, E. A. (Elisha Albright) (Georgia Institute of TechnologyAmerican Nuclear Society, 2003-10)
      Fuel cycle analyses are performed to evaluate the impacts of further transmutation of spent nuclear fuel on high-level and low-level waste mass flows into repositories, on the composition and toxicity of the high-level ...
    • Edge Pedestal Structure 

      Stacey, Weston M. (Georgia Institute of TechnologyAmerican Institute of Physics, 2004-12)
      The hypothesis is advanced and investigated that, in between or in the absence of ELMs (edge-localized-modes), the structure of the edge pedestal is determined by the transport requirements of plasma particle, momentum and ...
    • Extensions of the TEP Neutral Transport Methodology 

      Stacey, Weston M.; Zhang, Dingkang; Mandrekas, John (Georgia Institute of TechnologyWiley-VCH Verlag GmbH & Co. KGaA, 2004-04)
      Recent extensions of the Transmission and Escape Probability methodology and its implementation in the 2-D neutral transport code GTNEUT are presented. These extensions address the issues of anisotropy of the neutral ...
    • A framework for the development and testing of an edge pedestal model: formulation and initial comparison with DIII-D data 

      Stacey, Weston M.; Groebner, Richard J. (Georgia Institute of TechnologyAmerican Institute of Physics, 2003-06)
      A framework has been formulated for the further development and testing of a predictive edge pedestal model. This framework combines models for the interaction of the various physical phenomena acting in the edge ...
    • A Fusion Transmutation of Waste Reactor 

      Stacey, Weston M.; Mandrekas, John; Hoffman, E. A. (Elisha Albright); Kessler, G. P.; Kirby, C. M.; Mauer, A. N.; Noble, J. J.; Stopp, D. M.; Ulevich, D. S. (Georgia Institute of TechnologyAmerican Nuclear Society, 2002-03)
      A design concept and the performance characteristics for a fusion transmutation of waste reactor (FTWR)—a sub-critical fast reactor driven by a tokamak fusion neutron source--are presented. The present design concept is ...
    • Investigation of transport in the DIII-D edge pedestal 

      Stacey, Weston M. (Georgia Institute of TechnologyAmerican Institute of Physics, 2004-04)
      A comparison of various heat conduction theories with data from several DIII-D [Luxon, Nucl. Fusion, 42, 614, 2002] shots indicates: 1) that neoclassical theory is in somewhat better agreement with experiment than is ion ...
    • A neoclassical model for toroidal rotation and the radial electric field in the edge pedestal 

      Stacey, Weston M. (Georgia Institute of TechnologyAmerican Institute of Physics, 2004-06)
      A model for the calculation of toroidal rotation velocities and the radial electric field in the edge pedestal of tokamaks is described. The model is based on particle and momentum balance and the use of the neoclassical ...
    • Particle Transport and Density Gradient Scale Lengths in the Edge Pedestal 

      Stacey, Weston M. (Georgia Institute of TechnologyWiley-VCH Verlag, 2004-04)
      A new flux-gradient relation for the ion particle flux in the edge pedestal is derived from continuity and momentum balance, taking into account atomic physics, and cast in the form of a generalized ‘diffusion-pinch’ ...
    • Structure of the edge density pedestal in tokamaks 

      Stacey, Weston M. (Georgia Institute of TechnologyAmerican Institute of Physics, 2004-09)
      A 'first-principles' model for the structure of the edge density pedestal in tokamaks between or in the absence of edge localized magnetohyrodynamic instabilities is derived from ion momentum and particle conservation and ...
    • Sub-critical Transmutation Reactors with Tokamak Fusion Neutron Sources 

      Stacey, Weston M.; Mandrekas, John; Hoffman, E. A. (Elisha Albright) (Georgia Institute of TechnologyAmerican Nuclear Society, 2005)
      The principal results of a series of design scoping studies of sub-critical fast transmutation reactors (based on the nuclear and processing technology being developed in the USDoE Generation IV, Advanced Fuel Cycle ...
    • A Superconducting Tokamak Fusion Transmutation of Waste Reactor 

      Stacey, Weston M.; Mauer, A. N.; Mandrekas, John; Hoffman, E. A. (Elisha Albright) (Georgia Institute of TechnologyAmerican Nuclear Society, 2004-01)
      We are developing a Fusion Transmutation of Waste Reactor (FTWR) concept—a sub-critical, metal fuel, liquid metal cooled fast reactor driven by a tokamak DT fusion neutron source. An emphasis is placed on using nuclear, ...
    • Testing of an edge thermal instability stabilization model for the low-to-high mode power threshold 

      Stacey, Weston M. (Georgia Institute of TechnologyAmerican Institute of Physics, 2004-02)
      A test of a new model for the low-to-high (L-H) mode power threshold, based on the stabilization of edge thermal instabilities, is made by comparison with a set of DIII-D [J. L. Luxon, Nucl. Fusion, 42, 614, 2002] ...
    • Tutorial: Principles and Rationale of the Fusion-Fission Hybrid Burner Reactor 

      Stacey, Weston M. (Georgia Institute of Technology, 2011-09-13)
      The potential advantages of Fusion-Fission Hybrid (FFH) reactors (relative to critical fast reactors) for closing the back end of the nuclear fuel cycle are discussed. The choices of fission and fusion technologies for FFH ...