Publication:
Widening of the Frequency Tuning Bandwidth in a Subterahertz Gyrotron with an External Bragg Reflector

Дата
2020
Авторы
Rozental', R. M.
Zotova, I. V.
Glyavin, M. Y.
Fedotov, A. E.
Tarakanov, V. P.
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Научные группы
Организационные подразделения
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Институт лазерных и плазменных технологий
Стратегическая цель Института ЛаПлаз – стать ведущей научной школой и ядром развития инноваций по лазерным, плазменным, радиационным и ускорительным технологиям, с уникальными образовательными программами, востребованными на российском и мировом рынке образовательных услуг.
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Аннотация
© 2021, Springer Science+Business Media, LLC, part of Springer Nature.We study theoretically the possibility to widen the frequency tuning bandwidth of the generation of subterahertz gyrotrons by using strong signal reflections by periodic structures of the Bragg type installed in the output line. It was shown earlier that wideband tuning is possible in gyrotrons with short cavities, where the use of such cavities reduces the sensitivity of excitation of higher longitudinal modes to the spread of electron beam velocities. However, the issue of the formation of polyhelical electron beams with high currents arises in this case, and such beams are required to ensure the conditions of self-excitation in a short gyrotron cavity. The introduction of strong reflections allows one to significantly reduce the starting and operating currents, at which several higher longitudinal modes are excited. This ensures frequency tuning of about 8% at a power level of 0.5–1.0 kW with the use of electron beams which can be formed in magnetron-injection guns having the conventional geometry.
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Widening of the Frequency Tuning Bandwidth in a Subterahertz Gyrotron with an External Bragg Reflector / Rozental', R.M. [et al.] // Radiophysics and Quantum Electronics. - 2020. - 10.1007/s11141-021-10061-3
URI
https://www.doi.org/10.1007/s11141-021-10061-3
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85104841321&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000640865000007
 https://openrepository.mephi.ru/handle/123456789/23176
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