Author/Authors :
Verhoeven، نويسنده , , A.G.A and Bongers، نويسنده , , W.A. and Bruschi، نويسنده , , A. and Cirant، نويسنده , , S. and Elzendoorn، نويسنده , , B.S.Q. and Gantenbein، نويسنده , , G. and Graswinckel، نويسنده , , M.F. and Heidinger، نويسنده , , R. and Kasparek، نويسنده , , W. and Kruyt، نويسنده , , O.G. and Lamers، نويسنده , , B. and Piosczyk، نويسنده , , B. and Plaum، نويسنده , , B. and Ronden، نويسنده , , D.M.S. and Saibene، نويسنده , , G. and Stuivinga، نويسنده , , M. and Zohm، نويسنده , , H.، نويسنده ,
Abstract :
The design work for the ITER ECRH remote-steering upper-port launcher is described. The goal of the system is the stabilization of neoclassical tearing modes (NTMs). The required scanning range in the plasma (more than 20°) is achieved remotely, far away from the hostile plasma environment. This is done behind a diamond window in a separate vacuum environment. Scanning of the beam is done by a mirror that both rotates and translates to steer the beam in the proper way through the window and an isolation valve into a square corrugated waveguide. At the output of this 4.4 m long waveguide, the beam comes out at the same angle and is reflected by a fixed front mirror into the plasma [A.G.A. Verhoeven, et al., The ITER remote-steering ECW upper-port launcher, in: N. Hiromoto (Ed.), The 28th International Conference on Infrared and MM Waves, Otsu, Japan, September 29–October 3, 2003 (JSAP Catalog No. 031231)].
Keywords :
antennae , Launchers , ECRH , plasma physics , mm-Wave technology , Rf heating
