New concept input and output systems for high power gyroklystron
- Institute for Plasma Research and Electrical Engineering Department, University of Maryland, College Park, Maryland 20742 (United States)
In order to obtain the high mode purity of a TE{sub 011} mode in an overmoded gyroklystron input cavity while maintaining high coupling efficiency, a coaxial dual-cavity input structure with an outer TE{sub 411} mode and an inner TE{sub 011} mode coaxial cavity has been designed to get a reasonable low Q and to avoid mode distortion due to a single coupling aperture between an input waveguide and input cavity. A quality factor of 73 and a resonant frequency of 8.570 GHz with high mode purity have been obtained for the inner TE{sub 011} mode coaxial cavity. Furthermore, in order to inject the output power of a second harmonic gyroklystron (17.136 GHz) into our future pulse composer and accelerator system, a coaxial TE{sub 021} output cavity with a TE{sub 02}-TE{sub 01} mode converter is proposed and designed as the output structure of the gyroklystron. The output power can be extracted radially, and at the same time the TE{sub 02} mode is converted to TE{sub 01} mode into a inner coaxial waveguide. {copyright} {ital 1999 American Institute of Physics.}
- Research Organization:
- Lawrence Berkeley National Laboratory
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC03-76SF00098; W-7405-ENG-48
- OSTI ID:
- 687975
- Report Number(s):
- CONF-980742--
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 472; ISSN APCPCS; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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