Possible excitation of radial satellites in high-power gyrotrons

Avramides, KA; Pagonakis, IGr; Piosczyk, B; Vomvoridis, JL

dc.contributor.author	Avramides, KA	en
dc.contributor.author	Pagonakis, IGr	en
dc.contributor.author	Piosczyk, B	en
dc.contributor.author	Vomvoridis, JL	en
dc.date.accessioned	2014-03-01T02:44:55Z
dc.date.available	2014-03-01T02:44:55Z
dc.date.issued	2007	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/32019
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-77951202562&partnerID=40&md5=da78fa046fd0cdeb5bb3fe5e37dd12ea	en
dc.relation.uri	http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4516688	en
dc.relation.uri	http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=04516688	en
dc.subject	Gyrotrons	en
dc.subject	Mode competition	en
dc.subject.other	Coaxial gyrotrons	en
dc.subject.other	Dominant mode	en
dc.subject.other	High-power	en
dc.subject.other	Low Power	en
dc.subject.other	Mode competition	en
dc.subject.other	Numerical results	en
dc.subject.other	Numerical simulation	en
dc.subject.other	Output power	en
dc.subject.other	Voltage ranges	en
dc.subject.other	Competition	en
dc.subject.other	Computer simulation	en
dc.subject.other	Electron beams	en
dc.subject.other	Gyrotrons	en
dc.subject.other	Microwave tubes	en
dc.subject.other	Millimeter waves	en
dc.subject.other	Numerical analysis	en
dc.subject.other	Terahertz waves	en
dc.subject.other	Satellites	en
dc.title	Possible excitation of radial satellites in high-power gyrotrons	en
heal.type	conferenceItem	en
heal.identifier.secondary	4516688	en
heal.publicationDate	2007	en
heal.abstract	Numerical simulations of the pre-prototype 170 GHz coaxial gyrotron for ITER, existing at FZK, indicate that high-power (∼ MW) excitation of a TEmp mode is accompanied by parasitic low-power excitation of its radial satellites TEm(p+1) and TEm(p-1), despite the fact that the satellites are out of resonance with the electron beam. The parasitic excitation of the radial satellites limits the voltage range of oscillations of the dominant mode, and this results in lower output power and efficiency. With the inclusion of the radial satellites in the simulations, the numerical results come closer to the experimental results.	en
heal.journalName	IRMMW-THz2007 - Conference Digest of the Joint 32nd International Conference on Infrared and Millimetre Waves, and 15th International Conference on Terahertz Electronics	en
dc.identifier.spage	700	en
dc.identifier.epage	701	en