Abstract
Neoclassical bootstrap currents with well controlled central seed current drive in Tokamak plasmas are investigated analytically and numerically. The analytical current scaling predicts a strong bootstrap effect in hot, high density plasmas. The Troyon limit and safety factor profiles in various small seed current cases are considered to find the optimal conditions for a large bootstrap amplification. The Troyon limited bootstrap current is very insensitive to the detailed form of the pressure profile and the beta-limit is determined by the plasma geometry alone. Regarding the current seeding, high frequency methods, like beat-waves, are proposed, which are ideal for the localized central current drive.
| Original language | English |
|---|---|
| Pages (from-to) | 1135-1148 |
| Journal | Plasma Physics and Controlled Fusion |
| Volume | 32 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 1990 |
| MoE publication type | A1 Journal article-refereed |