Title :
Design of the mm-wave system of the ITER ECRH upper launcher
Author :
Verhoeven, A.G.A. ; Bongers, W.A. ; Bruschi, A. ; Cirant, S. ; Elzendoorn, B.S.Q. ; Gantenbein, G. ; Graswinckel, M.F. ; Heidinger, R. ; Kasparek, W. ; Kruyt, O.G. ; Lamers, B. ; Piosczyk, B. ; Plaum, B. ; Ronden, D.M.S. ; Saibene, G. ; Zohm, H.
Author_Institution :
FOM Inst. for Plasma Phys., Nieuwegein, Netherlands
fDate :
27 Sept.-1 Oct. 2004
Abstract :
The 2-MW ECRH mm-wave system has to operate under various vacuum conditions. The aim of the mm-wave system to be installed in the ITER upper-port system is to inject electron cyclotron waves (ECW) in the ITER plasma in order to stabilize neoclassical tearing modes (NTM). The design analyses have demonstrated the feasibility of the remote steering approach in the ITER environment. In order to exploit the capability of ECW for localised heating and current drive over a range of plasma radii in ITER, the ECH and CD upper port launcher must have a beam steering capability.
Keywords :
Tokamak devices; beam steering; millimetre wave antennas; plasma beam injection heating; plasma radiofrequency heating; tearing instability; waveguide antennas; 2 MW; ECRH mm-wave system; ITER ECRH upper launcher; ITER upper-port system; beam steering; electron cyclotron resonance heating; electron cyclotron waves injection; neoclassical tearing modes; remote steering approach; upper port launcher; Beam steering; Mirrors; Optical waveguides; Particle beams; Physics; Plasma confinement; Plasma properties; Plasma waves; Structural beams; Valves;
Conference_Titel :
Infrared and Millimeter Waves, 2004 and 12th International Conference on Terahertz Electronics, 2004. Conference Digest of the 2004 Joint 29th International Conference on
Print_ISBN :
0-7803-8490-3
DOI :
10.1109/ICIMW.2004.1422070
