TY - GEN
T1 - Co- and Counter - viewing oblique ECE measurements during ECH and ECCD on the TCV tokamak
AU - Goodman, T.P.
AU - Udintsev, V.S.
AU - Felici, F.
AU - Zucca, C.
AU - Schlatter, Ch.
PY - 2007
Y1 - 2007
N2 - Using a new LFS receiving antenna in the oblique ECE configuration, we measure the emission during central co-ECCD and counter-ECCD discharges. The asymmetry of the electron distribution function (EDF) resulting from ECCD is put into evidence by performing 4 successive discharges measuring quasi-X mode and quasi-O mode in 2 separate discharges; then, repeating these measurements while viewing in the opposite toroidal direction. The plasma configuration and EC injection are identical in the 4 cases. The ratios of the X-mode signals are compared to simulations of the ECE by the NOTECTCV code and are found to be generally consistent with emission from a small, drifting, suprathermal, electron population carrying the ECCD current of the order calculated by the TORAY-GA code.
AB - Using a new LFS receiving antenna in the oblique ECE configuration, we measure the emission during central co-ECCD and counter-ECCD discharges. The asymmetry of the electron distribution function (EDF) resulting from ECCD is put into evidence by performing 4 successive discharges measuring quasi-X mode and quasi-O mode in 2 separate discharges; then, repeating these measurements while viewing in the opposite toroidal direction. The plasma configuration and EC injection are identical in the 4 cases. The ratios of the X-mode signals are compared to simulations of the ECE by the NOTECTCV code and are found to be generally consistent with emission from a small, drifting, suprathermal, electron population carrying the ECCD current of the order calculated by the TORAY-GA code.
M3 - Conference contribution
T3 - European conference abstracts
SP - P-2.147-1/4
BT - Proceedings of 34th European Physical Society Conference on Plasma Physics, 2-6 July, 2007, Warsaw, Poland
ER -