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Abstract

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.

Additional information

Authors: ZABIÉGO M, CEA, Département de Recherches sur la Fusion Contrôlée, CEN Cadarache, Saint-Paul-lez-Durance (FR);GARBET X, CEA, Département de Recherches sur la Fusion Contrôlée, CEN Cadarache, Saint-Paul-lez-Durance (FR);BÉCOULET A, CEA, Département de Recherches sur la Fusion Contrôlée, CEN Cadarache, Saint-Paul-lez-Durance (FR);NGUYEN F, CEA, Département de Recherches sur la Fusion Contrôlée, CEN Cadarache, Saint-Paul-lez-Durance (FR);SAOUTIC B, CEA, Département de Recherches sur la Fusion Contrôlée, CEN Cadarache, Saint-Paul-lez-Durance (FR);ZABIEGO M, CEA, Departement de Recherches sur la Fusion Controlee, CEN Cadarache, Saint-Paul-lez-Durance (FR);BECOULET A, CEA, Departement de Recherches sur la Fusion Controlee, CEN Cadarache, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: Article: Nuclear Fusion, Vol. 34 (1994) No. 11, pp. 1489-1495
Record Number: 199510909 / Last updated on: 1995-08-10
Category: PUBLICATION
Original language: en
Available languages: en