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Proceedings Paper

0.5 MW/140 GHz te10,4 gyrotron with built-in highly efficient quasioptical converter
Author(s): E. Borie
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Paper Abstract

KfK is continuing the development of 140 GHz high power gyrotrons for electron cyclotronwave (ECW) applications. Experiments with a TE10,4 mode gyrotron have been performed usingan axial rf output coupling. The achieved maximum output power of this version amounted to0.7 MW in the design mode with a mode purity of about 99 % and an electronic efficiency of26 %. Since these experiments have been performed using the superconducting magnet systemdesigned for the previous TE0,3 mode tube the pulse length was limited to 5 ms. With a moreappropriate magnet system with increased bore hole diameter which allows the use of a built-inquasioptical converter a pulse length of up to 300 ms with 0.5 MW rf power is expected.In the following we will present some experimental results with respect to frequency step- tuning of the TE10,4 mode gyrotron and describe the radial output coupling system.

Paper Details

Date Published: 30 November 2017
PDF: 2 pages
Proc. SPIE 2104, 18th International Conference on Infrared and Millimeter Waves, 21047A (30 November 2017); doi: 10.1117/12.2298694
Show Author Affiliations
E. Borie, Kernforschungszentrum Karlsruhe GmbH (Germany)

Published in SPIE Proceedings Vol. 2104:
18th International Conference on Infrared and Millimeter Waves
James R. Birch; Terence J. Parker, Editor(s)

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