Toroidal Field Ripple and Finite beta Effects on INTOR Performance. INTOR Phase II-A, Session VI.

摘要

Transport calculations have been carried out for the INTOR design to assess the sensitivity of performance to toroidal field ripple-induced losses, radial diffusion of the fast alpha particles, prompt loss of alpha particles born on banana-trapped orbits and finite beta induced electron conduction losses. The POPCON option in the 1-1/2-D WHIST transport code is used for these assessments with 150 keV D exp 0 neutral beam injection. The toroidal field ripple contours were obtained from the INTOR toroidal field coil design then sealed up from 0.7% to 1.2% at the outboard plasma edge. Ripple conduction losses include ripple-trapped particles in both the collisional and collisionless detrapping regimes and three regimes of banana-trapped particles. A multi-energy group model is used for radial diffusion of the fast alpha particles coupled with a classical model for collisional energy relaxation on the background electrons and ions. (ERA citation 08:006522)