Internal transport barrier with ion-cyclotron-resonance minority heating on tore supra
Recently, reversed magnetic shear operation was performed using only ion-cyclotron-resonance frequency minority heating (ICRH) during current ramp-up. A wide region of reversed magnetic shear has been obtained. For the first time, an electron internal transport barrier sustained by ICRH is observed, with a dramatical drop of density fluctuations. This barrier was maintained, on the current flat top, for about 2 s.
Hoang
GT
Departement de Recherches sur la Fusion Controlee, Association Euratom-CEA, CEA Cadarache, 13108 Saint-Paul-lez-Durance, France.
Bourdelle
C
Garbet
X
Antar
G
Budny
RV
Aniel
T
Basiuk
V
Becoulet
A
Devynck
P
Lasalle
J
Martin
G
Saint-Laurent
F