Now showing items 1-18 of 18

    • 2004 Annual Report Fusion Research Center, Georgia Institute of Technology [Title page] 

      Stacey, Weston M.; Mandrekas, John (Georgia Institute of Technology, 2004-10)
    • Annual Progress Report Georgia Tech Fusion Research Center, October 2006 

      Stacey, Weston M. (Georgia Institute of Technology, 2006-10)
      Contents: I. Edge Pedestal Structure and Transport -- II. Rotation -- III. Neutral Atom Transport and Thermal Instabilities -- IV. Conceptual Design of a Fast, Gas-Cooled Transmutation Reactor with a Tokamak Fusion Neutron ...
    • Annual Report 2007 Georgia Tech Fusion Research Center 

      Stacey, Weston M.; Friis, Zachary Ward; Lao, L.; Groebner, Richard J. (Georgia Institute of Technology, 2007)
      Contents: A. Interpretation of Edge Pedestal Rotation Measurements in DIII-D -- B. Experimentally Inferred Thermal Diffusivities in the Edge Pedestal Between ELMS in DIII-D -- C. Integrated Core-Pedestal-Divertor-Neutrals ...
    • 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 ...
    • Calculation of SOL and Divertor Plasma Properties 

      Stacey, Weston M. (Georgia Institute of Technology, 2008)
      A complex variety of interacting phenomena determine the properties of the plasma in the scrape-off layer (SOL) and divertor of a tokamak. These phenomena have been modeled in, two-dimensional plasma edge codes, which ...
    • The effects of rotation, electric field, and recycling neutrals on determining the edge pedestal density profile 

      Stacey, Weston M. (Georgia Institute of TechnologyAmerican Institute of Physics, 2010-05-19)
      The edge density profile is calculated from the continuity and momentum balance equations, using experimental electric field and rotation velocities and a calculated recycling neutral source, to evaluate the relative ...
    • 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 ...
    • 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 ...
    • Next-step option design studies (DOE GRANT ER54350) 

      Stacey, Weston M.; Mandrekas, John (Georgia Institute of Technology, 2003-12)
    • Next-Step Option Physics (Grant ER54350) 

      Stacey, Weston M.; Mandrekas, John; Hoffman, E. A. (Elisha Albright) (Georgia Institute of Technology, 2004-10)
      For more than a decade we have been involved in physics and design analysis of possible nextstep tokamak options, including first ITER, later FIRE and most recently a tokamak neutron source for a near-term transmutation ...
    • Non-Diffusive Transport in the Tokamak Edge Pedestal 

      Stacey, Weston M.; Groebner, Richard J.; Evans, T. E. (Georgia Institute of TechnologyInstitute of Physics, 2012)
      There are (at least) two classical mechanisms for non-diffusive transport in the edge plasma: i) particle “pinch” velocities due to forces such as VxB, and Er; and ii) outward drifts due to ion-orbit loss and X-transport. ...
    • Rotation velocities and radial electric field in the plasma edge 

      Stacey, Weston M. (Georgia Institute of TechnologyWiley-VCH Verlag GmbH and Co. KGaA, 2005-10)
      The toroidal and poloidal rotation and related radial electric field observed in the edge (and core) of tokamak plasmas are of interest for several reasons, not least of which is what they reveal about radial momentum ...
    • 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] ...
    • Theory, Analysis and Code Development 

      Stacey, Weston M.; Mandrekas, John; Zhang, Dingkang; Umansky, Maxim V.; Rognlien, Thomas D. (Georgia Institute of Technology, 2003-12)