1 October 1991 High power RF windows in fusion reactors
Author Affiliations +
Proceedings Volume 1576, 16th International Conference on Infrared and Millimeter Waves; 157666 (1991) https://doi.org/10.1117/12.2297935
Event: 16th International Conference on Infrared and Millimeter Waves, 1991, Lausanne, Switzerland
Abstract
The main functions of RF windows in fusion reactors are: to act as a first barrier for tritium and radioactive dust, and to provide vacuum containment. They must have low RF losses. The lifetime must be satisfactory (>5 years); nevertheless maintenance by remote handling must be foreseen. Valves or shutters are needed to improve safety. The tokamak windows will be placed in a screened area where they will receive a maximum dose of about 1016-17 n/cm2 over their life, to avoid degradation of their dielectric and mechanical properties. The coolant must be an inert fluid to avoid damages to other materials of the machine in case of leakage. In ITER [1], the most demanding working conditions are those of the windows of the Electron Cyclotron (EC) system which should support 1 MW, CW in the 120 - 140 GHz range (probably at fixed frequency) in a gaussian or HE11 mode. In the Lower Hybrid (LH) system the windows will have to transmit 1 MW, CW at about 5 GHz.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
L. Rebuffi, "High power RF windows in fusion reactors", Proc. SPIE 1576, 16th International Conference on Infrared and Millimeter Waves, 157666 (1 October 1991); doi: 10.1117/12.2297935; https://doi.org/10.1117/12.2297935
PROCEEDINGS
3 PAGES


SHARE
RELATED CONTENT

State of the art cryogenic CTE measurements of ultra low...
Proceedings of SPIE (September 02 2015)
Low-voltage single crystal actuators
Proceedings of SPIE (April 06 2006)
Simulation of thermal stress in n type diamond thin films...
Proceedings of SPIE (January 04 2008)
Window materials for 110-GHz and 280-GHz gyrotron
Proceedings of SPIE (August 19 1994)
Cryogenic piezoelectric actuators
Proceedings of SPIE (September 17 2009)

Back to Top