Powerful multichannel planar FEMs based on intense parallel sheet beams

N. Yu Peskov, N. S. Ginzburg, A. S. Sergeev, V. Yu Zaslavsky, A. V. Arzhannikov, P. V. Kalinin, S. A. Kuznetsov, S. L. Sinitsky, V. D. Stepanov, M. Thumm

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

1 Citation (Scopus)


Novel schemes of powerful multichannel planar FEMs was developed in IAP RAS - BINP RAS collaboration based on two parallel sheet beams 0.8 MeV / 1 kA forming by the accelerator ELMI. In 75 GHz frequency band two-channel planar FEM with hybrid two-mirror resonator providing two-dimensional distributed feedback was elaborated. For record transverse size of interaction space (up to 45 × 2.5 wavelengths) synchronization of emission from both electron beams and realization of stable narrow-band generation have been demonstrated. As a result, spatially-coherent radiation with the output power of 30-50 MW and pulse duration of ∼100 ns was obtained in this FEM in each channel. To advance powerful long-pulse FEM into THz frequency range original project of two-stage oscillator is under development at the ELMI accelerator. As a microwave system for such oscillator a ring cavity based on four Bragg deflectors has been proposed. Recent results of theoretical and experimental studies of this FEM scheme are presented.

Original languageEnglish
Title of host publicationIVEC 2017 - 18th International Vacuum Electronics Conference
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages2
ISBN (Electronic)9781509059157
Publication statusPublished - 9 Feb 2018
Event18th International Vacuum Electronics Conference, IVEC 2017 - London, United Kingdom
Duration: 24 Apr 201726 Apr 2017


Conference18th International Vacuum Electronics Conference, IVEC 2017
CountryUnited Kingdom


  • free-electron masers and lasers
  • powerful millimeter and submillimeter radiation


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