ROTATION & MOMENTUM TRANSPORT

IN TOKAMAK PLASMAS

Fusion Research Center

Angular momentum transport and plasma rotation in response to injected neutral beam torque is a subject both of intrinsic interest and practical consequence (stabilization of MHD instabilities, effect on the H-mode edge pedestal, etc.) in tokamak physics.  Faculty and students in the FRC and collaborators have developed the gyroviscous neoclassical theory for angular momentum transfer and applied it to predict rotation and momentum confinement measured in a number of experiments.

1. W. M. Stacey, A. W. Bailey, D. J. Sigmar and K.C. Shaing, “Rotation and Impurity Transport in a Tokamak Plasma with Directed Neutral Beam Injection”, Nucl. Fusion, 25, 463 (1985).
2. W. M. Stacey and D. J. Sigmar, “Viscous effects in a collisional tokamak plasma with strong rotation”, Phys. Fluids, 28, 2800 (1985).
3. W. M. Stacey, “Interpretation of Measurements of the Global Momentum and Energy Confinement Time in Strongly Rotating Plasmas”, Nucl. Fusion, 31, 31 (1991).
4. W. M. Stacey, “Poloidal rotation and density asymmetries in a tokamak plasma with strong toroidal rotation”, Phys. Fluids B, 4, 3302 (1992).
5. W. M. Stacey and D. R. Jackson, “Poloidal rotation, density asymmetries and momentum confinement in tokamak experiments”, Phys. Fluids B, 5, 1828 (1993).
6. W. M. Stacey, “Neoclassical theory for rotation and impurity transport in tokamaks with neutral beam injection”, Phys. Plasmas, 8, 158 (2001).
7. W. M. Stacey and M. Murakami, “Momentum confinement in DIII-D shots with impurities”, Phys. Plasmas, 8, 4450 (2001).
8. W. M. Stacey and J. Mandrekas, “Comparison of neoclassical rotation theory with experiment under a variety of conditions in DIII-D”, Phys. Plasmas, 9, 1622 (2002).
9. W. M. Stacey, “Neoclassical calculation of poloidal rotation and poloidal density asymmetries in tokamaks”, Phys. Plasmas, 9, 3874 (2002).

10. W. M. Stacey, “A Neoclassical Model for Toroidal Rotation and the Radial Electric Field in the Edge Pedestal”, Phys. Plasmas, 11, 3096 (2004).

11. W. M. Stacey, R. W. Johnson and J. Mandrekas, “A neoclassical calculation of rotation profiles in DIII-D”, Phys. Plasmas, 13, 062508 (2006).

12. W. M. Stacey, “Rotation velocities and the radial electric field in the plasma edge”, Contrib. Plasma Phys., 46, 597 (2006).

13. W. M. Stacey, “Extension and comparison of neoclassical models for poloidal rotation in tokamaks”, Phys. Plasmas, 15, 012501 (2008). (PoP abstract)

14. W. M. Stacey, “Extension and comparison of neoclassical models for poloidal rotation in tokamaks”, Phys. Plasmas, 15, 012501 (2008). (PoP abstract)

15. W. M. Stacey and R.J. Groebner, “Interpretation of edge pedestal rotation measurements in DIII-D”, Phys. Plasmas, 15, 012503 (2008). (PoP abstract)