POLOIDAL ROTATION, DENSITY ASYMMETRIES, AND MOMENTUM CONFINEMENT IN TOKAMAK EXPERIMENTS

Poloidal rotation speeds and density asymmetries are calculated for th e deuterium and dominant carbon (oxygen) impurity ions in discharges i n the Axially Symmetric Divertor Experiment (ASDEX) [Proceedings of th e 13th Conference on Plasma Physics and Controlled Fusion Research, (I nternational Atomic Energy Agency, Vienna, 1991), p. 325], Doublet III (DIII) [Nucl. Fusion 26, 543 (1986)], Impurity Studies Experiment (IS X-B) [Nucl. Fusion 23, 1017 (1983)], Joint European Torus (JET) [Nucl. Fusion 31, 31 (1991)] and Tokamak Fusion Test Reactor (TFTR) (Nationa l Technical Information Document No. PB92177187) for which upsilon(phi ) is similar to upsilon(th) for the ions. These poloidal rotation spee ds and density asymmetries are used to evaluate the neoclassical gyrov iscous model for the momentum confinement time. The rather good agreem ent with experimental momentum confinement times obtained over this wi de range of plasma parameters provides a measure of confidence in the calculated density asymmetries and poloidal rotation, as well as demon strating that neoclassical calculations can predict momentum confineme nt in tokamaks.