Prepared for the U.s. Department of Energy, under Contract De-ac02-76ch03073 Princeton Plasma Physics Laboratory Princeton University, Princeton, New Jersey

Prepared for the U.s. Department of Energy, under Contract De-ac02-76ch03073 Princeton Plasma Physics Laboratory Princeton University, Princeton, New Jersey

Prepared for the U.s. Department of Energy, under Contract De-ac02-76ch03073 Princeton Plasma Physics Laboratory Princeton University, Princeton, New Jersey

Prepared for the U.s. Department of Energy, under Contract De-ac02-76ch03073 Princeton Plasma Physics Laboratory Princeton University, Princeton, New Jersey

Prepared for the U.s. Department of Energy, under Contract De-ac02-76ch03073 Princeton Plasma Physics Laboratory Princeton University, Princeton, New Jersey

A diagnostic to measure the loss of energetic ions from the Wendelstein 7-AS (W7-AS) stellarator has been built. It is capable of measuring losses of both neutral beam ions and energetic ions arising from ion cyclotron resonant heating. The probe can measure losses of both clockwise and counterclockwise-going energetic ions simultaneously , and accepts a wide range of pitch angles in both direc...

Prepared for the U.s. Department of Energy, under Contract De-ac02-76ch03073 Princeton Plasma Physics Laboratory Princeton University, Princeton, New Jersey

A computational study of resistive drift waves in the edge plasma of a stellarator with an helical magnetic axis is presented. Three coupled field equations, describing the collisional drift wave dynamics in the linear approximation, are solved as an initial-value problem along the magnetic field line. The magnetohydrodynamic equilibrium is obtained from a three-dimensional local equilibrium mo...