Abstract
It is shown that relaxation oscillations associated with repetitive
internal transport barrier (ITB) buildup and collapse in high-performance,
overdriven tokamak plasmas, with ion-cyclotron resonance heating (ICRH),
neutral-beam injection (NBI) and lower-hybrid current drive (LHCD), and with a
dominant fraction of bootstrap current, can be overcome if the LHCD power is
sufficiently high. This result has been obtained using a benchmarked, fully
predictive transport model iterated with given ICRH profiles and
self-consistently with NBI and LHCD modules, the stabilizing role of the E × B
flow shear being combined with that of reversed magnetic shear in the
simulation of ITB dynamics.
| Original language | English |
|---|---|
| Pages (from-to) | L41-L45 |
| Journal | Nuclear Fusion |
| Volume | 47 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 2007 |
| MoE publication type | A1 Journal article-refereed |