Lower hybrid current drive at high density on Tore Supra
Artikel i vetenskaplig tidskrift, 2013
Lower hybrid current drive (LHCD) experiments with line-averaged density varying between 1.5 x 1019 and 6 x 10(19) m(-3) are performed on the Tore Supra tokamak under quasi-steady-state conditions with respect to the fast electron dynamics. The LHCD efficiency is analysed from the fast electron bremsstrahlung (FEB) and electron cyclotron emission (ECE). The effect of plasma equilibrium and particle fuelling is documented. It is concluded that the fast decay of FEB with plasma density could be consistent with simple scaling of the current drive efficiency and FEB. Plasma edge measurements are presented looking for the effect on fast electron emission. In a specific case of particle fuelling, an anomalous decay of the hard x-ray and ECE signals suggests deleterious interaction of the wave with edge plasma.
tokamak
efficiency
waves
plasmas
parametric-instability
Författare
M. Goniche
Centre CEA de Cadarache
V. Basiuk
Centre CEA de Cadarache
J. Decker
Centre CEA de Cadarache
P. K. Sharma
Institute for Plasma Research India
Centre CEA de Cadarache
G. Antar
American University of Beirut
Centre CEA de Cadarache
G. Berger-By
Centre CEA de Cadarache
F. Clairet
Centre CEA de Cadarache
L. Delpech
Centre CEA de Cadarache
Annika Ekedahl
Centre CEA de Cadarache
J. Gunn
Centre CEA de Cadarache
J. Hillairet
Centre CEA de Cadarache
X. Litaudon
Centre CEA de Cadarache
D. Mazon
Centre CEA de Cadarache
E. Nilsson
Centre CEA de Cadarache
T. Oosako
Centre CEA de Cadarache
University of Tokyo
Y. Peysson
Centre CEA de Cadarache
M. Preynas
Centre CEA de Cadarache
M. Prou
Centre CEA de Cadarache
J. L. Segui
Centre CEA de Cadarache
Nuclear Fusion
0029-5515 (ISSN) 1741-4326 (eISSN)
Vol. 53 3Ämneskategorier (SSIF 2011)
Fysik
DOI
10.1088/0029-5515/53/3/033010