Sawteeth stabilization with on-axis ICRH in Tore Supra
Velocity anisotropy of the suprathermal population created by heating is known to influence sawtooth stabilisation in tokamaks. A realistic description of the hot ion distribution pitch angle dependence has been obtained in terms of easily accessible experimental data for on-axis ICRH in Tore Supra. A simple analytic model is developed, leading to the result that, contrary to the common presumption, sawtooth stabilisation with on-axis ICRH is driven by both passing and trapped hot ions. In Tore Supra discharges, the stabilising effect of closely passing hot ions is found to be dominant.
Bibliographic Reference: Report: EUR-CEA-FC-1510 EN (1994) 10 pp.
Availability: Available from CEA, Département de Recherches sur la Fusion Contrôlée, Saint-Paul-lez-Durance (FR)
Record Number: 199410371 / Last updated on: 1994-11-28
Original language: en
Available languages: en