Stabilization of ion-temperature-gradient-driven Tokamak modes by magnetic-field gradient reversal
Global gyrokinetic particle simulations have been used to search tokamak configurations which are stable against the ion-temperature-gradient-driven (ITG) modes commonly held responsible for the core anomalous ion heat transport. The stable configurations are characterized by strongly reduced or reversed drifts on the low-field side. Since excellent transport properties have been observed in high poloidal beta tokamak experiments, we conjecture, as a result of our simulations, that this may be due to the stabilization of ITG modes by the reduction of the drifts.
Bibliographic Reference: Article: Physical Review Letters, Vol. 78 (1997) No. 18, pp. 3471-3474
Record Number: 199711287 / Last updated on: 1997-10-10
Original language: en
Available languages: en