NDLI: Analysis of a Quasi-Optical Launcher Toward a Step-Tunable 2-MW Coaxial-Cavity Gyrotron

Content Provider	IEEE Xplore Digital Library
Author	Guolin Li Jianbo Jin Rzesnicki, T. Kern, S. Thumm, M.
Copyright Year	1973
Abstract	A high-efficiency quasi-optical launcher for coaxial-cavity gyrotrons has been investigated with the mode-matching analysis method. The launcher designed for the TE_34,19 mode at 170 GHz is analyzed from 118 to 218 GHz with 67 modes. This investigation is a preliminary study of a launcher toward a step-tunable 2-MW coaxial-cavity gyrotron. Twenty-four modes with fundamental Gaussian mode content (FGMC) that is higher than 90% have been found. At last, nine modes of interest are selected for SURF3D simulations to investigate the transmission properties of millimeter-wave beams through the output window. The results reveal that the beams have deviations of their center points at the RF window within only 2.1 mm, and the FGMCs range from 92.67% to 96.67%. This result indicates that even the present launcher with specific deformations designed for only one mode would be capable of a step-tunable operation.
Sponsorship	IEEE Nuclear and Plasma Sciences Society
Starting Page	1361
Ending Page	1368
Page Count	8
File Size	645607
File Format	PDF
ISSN	00933813
Volume Number	38
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Coaxial components Gyrotrons Design methodology Millimeter wave technology Tellurium Radio frequency Tuning Fusion power generation Power generation Heating quasi-optical (q.o.) launcher Coaxial-cavity gyrotron frequency step tuning fundamental Gaussian mode content (FGMC)
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Condensed Matter Physics

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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