Electron optical system of W-band high power extended interaction klystron. Abstract

Zhurnal Radioelektroniki - Journal of Radio Electronics. eISSN 1684-1719. 2020. No. 6
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Full text in Russian (pdf)

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DOI https://doi.org/10.30898/1684-1719.2020.6.3

UDC 621.385.624

Electron optical system of W-band high power extended interaction klystron

V. Y. Rodyakin ¹, V. M. Pikunov ¹, V. N. Aksenov ²

¹Institute on Laser and Information Technologies - Branch of the Federal Scientific Research Centre «Crystallography and Photonics» RAS, 140700 Shatura, Svyatoozerskaya Str, 1

²Physics Department and International Laser Center of Lomonosov Moscow State University, 119991, Moscow, Leninskie Gory, 1

The paper was received on May 23, 2020

Abstract. We present the results of theoretical analysis of electron optical system of the high power W-band extended interaction klystron. The computer code PARS is used for numerical simulation. As result of optimization, the design of Piers type electron gun, magnetic focusing system and depressed collector have been developed. Electron gun has high beam current density convergence factor 100 and gives electron beam current 1.8 A. Magnetic focusing system provides 99% beam current transmission through klystron interaction region with taking into account of thermal distributions of transverse energy of emitted electrons. Double-stage depressed collector shows beam energy recovery efficiency 72% in static regime with taking into account of secondary electron emission from collector’s walls.

Key words: computer code PARS, electron beam, electron gun, depressed klystron, collector, focusing magnetic field, beam optics, secondary electron emission.

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For citation:

Rodyakin V.Y., Pikunov V.M., Aksenov V.N. Electron optical system of W-band high power extended interaction klystron. Zhurnal Radioelektroniki - Journal of Radio Electronics. 2020. No. 6. Available at http://jre.cplire.ru/jre/jun20/3/text.pdf. DOI https://doi.org/10.30898/1684-1719.2020.6.3