The horizontally scanning, multiangle charge-exchange analyzers on the Princeton Large Torus (PLT) and the Poloidal Divertor Experiment

Direct measurements of the radial profile of the magnetic field line pitch on PBX-M [Phys. Fluids B, 2_, 1271 (1990)1, coupled with model predictions of these profiles allow a critical comparison with the Spitzer and neoclassical models of plasma " parallel resistivity. The measurements of the magnetic field line pitch are made by "Fusion Phy._:cs and Technology, Torrance, Cal.

The horizontally scanning, multiangle charge-exchange analyzer on the Poloidal Divertor Experiment (PDX) was used to study the beam ion slowing-down process with high-power perpendicular injection. Measurements were made over a wide range in toroidal field (8 kG < B(T) < 22 kG), plasma current (200 kA < I(p) < 500 kA), and beam power (1 HW < P B < 7 HW|. In MHD-cjuiescent plasmas, good agreement is found between the measured slowing-down spectra and theoretical predictions as a function of both angle and energy. Classes of prompt orbit losses are observed with both co-and counter-injection which have been understood and applied to plasma diagnostics. The effects of MHD activity on fast ion thermalisation will be the subject of a companion paper. DISCLAIMERThis report was prepared as an account of woik sponsored by an agency of the United Slates Government. Neither the United Slates Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsi bility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Refer ence herein to any specific commercial product, process, or service by »3de name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recom mendation, or favoring by the United States Government or any agency thereor. The views and opinions of authors expressed herein do not necessarily slate or reflect those of the United States Government or any agenrv thereof.