Sawtooth stabilization with on-axis ICRH on Tore SupraFunded under: EAEC-FUSION 12C
Velocity anisotropy of the suprathermal population created by heating (ICRH) is known to influence sawtooth stabilisation in tokamaks. However, studying such effects requires a realistic description of the hot ion distribution pitch angle dependence in terms of easily accessible experimental data. These have been obtained for an on-axis ICRH on Tore Supra. A simple analytic model is developed and applied to the description of on-axis ICRH. It leads to the result that sawtooth stabilisation with on-axis ICRH is driven by both passing and trapped hot ions. In Tore Supra discharges, the stabilising effect of barely passing hot ions is found to be dominant.
Bibliographic Reference: Article: Nuclear Fusion, Vol. 34 (1994) No. 11, pp. 1489-1495
Record Number: 199510909 / Last updated on: 1995-08-10
Original language: en
Available languages: en