Broadband Polarizers for High-Power Multi-Frequency ECRH Systems
Source: International Journal of Infrared and Millimeter Waves, Volume 26, Number 2, February 2005 , pp. 163-172(10)
Abstract:A new broadband ECRH (Electron Cyclotron Resonance Heating) system is currently under construction at the ASDEX Upgrade tokamak. This system will employ multi-frequency gyrotrons step-tunable in the range 105–140 GHz. A set of two corrugated polarizer mirrors will be applied to provide for an arbitrary polarization of the Gaussian beam injected into the plasma. The principal bandwidth of such a two-polarizer setup has been evaluated. It can be shown that two mirrors with sinusoidal grooves and corrugation depths adjusted to the center frequency of 122.5 GHz will satisfy the requirements.
Document Type: Research Article
Affiliations: 1: Max-Plank-Institut für Plasmaphysik, EURATOM-IPP, Boltzmannstr.2, Garching, D-85748, Germany, Email: firstname.lastname@example.org 2: Max-Plank-Institut für Plasmaphysik, EURATOM-IPP, Boltzmannstr.2, Garching, D-85748, Germany,
Publication date: 2005-02-01