Abstract
A high-efficiency mode converter of the ITER gyrotron operating mode into the Gaussian wave beam has been developed. It includes an irradiating waveguide with shallow deformation and profiled quasi-optical mirrors to increase the Gaussian content. Low-power tests were carried out with a TE25.10 mode exciter and a mode converter. A prototype of the short-pulsed 170 GHz gymtmn with the new converter was manufactured and tested. Diffraction losses measured inside the tube were less then 2% at the 1 MW power level. A high Gaussian mode content in the output beam has been also demonstrated.
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Bogdashov, A., Chirkov, A., Denisov, G. et al. High-Efficient Mode Converter for ITER Gyrotron. Int J Infrared Milli Waves 26, 771–785 (2005). https://doi.org/10.1007/s10762-005-5651-8
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DOI: https://doi.org/10.1007/s10762-005-5651-8