Title :
Investigations of dielectric RF properties of ultra low loss CVD diamond disks for fusion applications
Author :
Scherer, Theo A. ; Strauss, Dirk ; Torge, Maika ; Meier, Andreas
Author_Institution :
Inst. fur Materialforschung IMF-I, Forschungszentrum Karlsruhe, Karlsruhe, Germany
Abstract :
To determine the high-power long pulse RF loss properties of CVD diamond window disks for the ITER ECRH Upper Launcher a Fabry-Perot measurement setup has been used. The dielectric loss is strongly influenced by the surface chemistry of the diamond. Special surface engineering techniques are available due to the reduction of the electrical surface conductivity and therefore of the RF losses.
Keywords :
angular measurement; diamond; dielectric losses; discs (structures); Fabry-Perot measurement; ITER ECRH Upper Launcher; RF losses; diamond surface chemistry; dielectric RF properties; electrical surface conductivity; ultra low loss CVD diamond disks; Chemistry; Conductivity; Dielectric loss measurement; Dielectric losses; Dielectric measurements; Fabry-Perot; Loss measurement; Pulse measurements; Radio frequency; Surface engineering;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves, 2009. IRMMW-THz 2009. 34th International Conference on
Conference_Location :
Busan
Print_ISBN :
978-1-4244-5416-7
Electronic_ISBN :
978-1-4244-5417-4
DOI :
10.1109/ICIMW.2009.5324910
