Title :
Performance of the 140 GHz prototype transmission system for ECRH on the stellarator W7-X
Author :
Kasparek, Walter ; Empacher, L. ; Erckmann, V. ; Gantenbein, Gerd ; Hollmann, F. ; Schuller, P.G. ; Schworer, K. ; Weissgerber, M.
Author_Institution :
Inst. fur Plasmaforschung, Stuttgart Univ., Germany
Abstract :
For the future stellarator W7-X of IPP at Greifswald, a powerful electron cyclotron resonance heating facility is being built which will include 10 gyrotrons at 140 GHz with a CW power of 1 MW each plus 2 optional gyrotrons at 70 GHz. The millimetre wave power will be transmitted fully optically via two multiple-beam waveguides (MBWG) with a length of about 50 m. This paper presents calculations and low-power measurements of the transmission characteristics of a prototype MBWG, which promise a high transmission efficiency for the ECRH system under construction.
Keywords :
cyclotrons; millimetre wave propagation; plasma electromagnetic wave propagation; plasma radiofrequency heating; plasma toroidal confinement; stellarators; waveguides; 1 MW; 140 GHz; 70 GHz; CW power; ECRH; Greifswald; IPP; W7-X stellarator; electron cyclotron resonance heating facility; high transmission efficiency; low-power measurements; millimetre wave power; multiple-beam waveguides; prototype transmission system; transmission characteristics; Cyclotrons; Electrons; Gyrotrons; Heating; Mirrors; Plasma measurements; Plasma sources; Prototypes; Resonance; Structural beams;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2001. IEEE
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7070-8
DOI :
10.1109/APS.2001.958851
