Dielectric RF properties of CVD diamond disks from sub-mm wave to THz frequencies

Author

Scheuring, A. ; Probst, P. ; Stockhausen, A. ; Ilin, K. ; Siegel, M. ; Scherer, T.A. ; Meier, A. ; Strauss, D.

Author_Institution

Inst. fuer Mikro- und Nanoelektronische Syst. (IMS), Karlsruhe Inst. of Technol. (KIT), Karlsruhe, Germany

fYear

2010

fDate

5-10 Sept. 2010

Firstpage

1

Lastpage

2

Abstract

ITER torus windows with CVD diamond disks for high power heating applications (170 GHz, 1-2 MW) have been investigated by different low and high power measurement setups in the frequency range of 90 to 170 GHz. The authors consider the loss mechanisms in diamond material via determination of the frequency dependence of dielectric constant and loss tangent at high frequencies, up to several THz.

Keywords

chemical vapour deposition; diamond; dielectric losses; fusion reactor materials; permittivity; terahertz wave spectra; C; CVD diamond disks; ITER torus windows; THz frequency; chemical finishing; dielectric RF properties; dielectric constant; dielectric loss mechanisms; electronic surface states; frequency 90 GHz to 170 GHz; high power fusion applications; loss tangent; power 1 MW to 2 MW; sp²-carbon content; submm wave; surface losses; surface roughness; Diamond-like carbon; Dielectric measurements; Frequency measurement; Loss measurement; Millimeter wave measurements; Optical surface waves;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared Millimeter and Terahertz Waves (IRMMW-THz), 2010 35th International Conference on

Conference_Location

Rome

Print_ISBN

978-1-4244-6655-9

Type

conf

DOI

10.1109/ICIMW.2010.5612543

Filename

5612543