Journal of Radio Electronics. eISSN 1684-1719. 2025. ¹5

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DOI: https://doi.org/10.30898/1684-1719.2025.5.11

 

 

 

planar W-band Cherenkov maser
with two-dimensional periodic slow-wave
structurebased on the «Elmi» AcCelerator:
 Design parameters and first experiments

 

À.V. Arzhannikov1, N.S. Ginzburg2, V.Yu. Zaslavsky1,2, P.V. Kalinin1,
N.Yu. Peskov1,2, E.S. Sandalov1, A.S. Sergeev2, S.L. Sinitsky1, V.D. Stepanov1

 

1Budker Institute of Nuclear Physics SB RAS,
630090, Russia, Novosibirsk, Lavrenteva Ave., 11

2Gaponov-Grekhov Institute of Applied Physics RAS,
603950, Russia, Nizhny Novgorod, Ulyanova Str., 46

 

The paper was received May 23, 2025.

 

Abstract. The project of a powerful spatially-extended W-band Cherenkov maser of planar geometry is currently being developed in collaboration between the BINP RAS and IAP RAS. The experimental basis of the project is the «ELMI» accelerator complex forming the electron beams with parameters of 1 MeV / 3 - 5 kA / 3 μs and a cross-section of 0.4 cm × 17 cm (sheet configuration). A key component of the electrodynamic system of the generator is a slow-wave structure with two-dimensional periodic corrugation, which provides a two-dimensional distributed feedback mechanism. The paper presents the simulation results of the developed generator and data from the first series of experiments on its realization, in which the excitation of the orotron-type modes was observed. Approaches to the suppression of the parasitic modes and the implementation of the surface wave generation regime with the prospect of the generated radiation power enhancement are discussed.

Key words: powerful microwave radiation, relativistic Cherenkov masers, two-dimensional distributed feedback, mode selection in oversized generators.

Financing: The work was partially supported by the Russian Science Foundation, grant no. 23-19-00370

Corresponding author: Peskov Nikolai Yurevich, peskov@ipfran.ru

 

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For citation:

Arzhannikov A.V., Ginzburg N.S., Zaslavsky V.Yu., Kalinin P.V., Peskov N.Yu., Sandalov E.S., Sergeev A.S., Sinitsky S.L., Stepanov V.D. Planar W-band Cherenkov maser with two-dimensional periodic slow-wave structure based on the «ELMI» accelerator: design parameters and first experiments. // Journal of Radio Electronics. – 2025. – ¹ 5. https://doi.org/10.30898/1684-1719.2025.5.11 (in Russian)