title: ÐÐ¾Ð²ÑÑÐµÐ½Ð¸Ðµ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸ Ð³Ð¸ÑÐ¾ÑÑÐ¾Ð½Ð¾Ð² Ð¿ÑÑÐµÐ¼ ÑÐ»ÑÑÑÐµÐ½Ð¸Ñ ÐºÐ°ÑÐµÑÑÐ²Ð° ÑÐ»ÐµÐºÑÑÐ¾Ð½Ð½Ð¾Ð³Ð¾ Ð¿Ð¾ÑÐ¾ÐºÐ° Ð¸ Ð¼Ð½Ð¾Ð³Ð¾ÑÑÑÐ¿ÐµÐ½ÑÐ°ÑÐ¾Ð¹ ÑÐµÐºÑÐ¿ÐµÑÐ°ÑÐ¸Ð¸ Ð¾ÑÑÐ°ÑÐ¾ÑÐ½Ð¾Ð¹ ÑÐ½ÐµÑÐ³Ð¸Ð¸ ÑÐ»ÐµÐºÑÑÐ¾Ð½Ð¾Ð²
title: Ð½Ð°ÑÑÐ½ÑÐ¹ Ð´Ð¾ÐºÐ»Ð°Ð´
titleType: Subtitle
title: Enhancement of gyrotrons efficiency by improvement of electron beam quality and by multistage recovery of residual electron energy
Creators: name: Ð¢ÑÐ¾ÑÐ¸Ð¼Ð¾Ð², ÐÐ°Ð²ÐµÐ»
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2020
Subjects: ÐÐ¸ÑÐ¾ÑÑÐ¾Ð½Ñ
Ð­Ð»ÐµÐºÑÑÐ¾Ð½Ñ
Ð­Ð»ÐµÐºÑÑÐ¾Ð½Ð½Ð¾-Ð¾Ð¿ÑÐ¸ÑÐµÑÐºÐ¸Ðµ ÑÐ¸ÑÑÐµÐ¼Ñ
Ð¡ÐÐ§ Ð´Ð¸Ð°Ð³Ð½Ð¾ÑÑÐ¸ÐºÐ°
ÑÐµÐºÑÐ¿ÐµÑÐ°ÑÐ¸Ñ ÑÐ½ÐµÑÐ³Ð¸Ñ
ÐºÐ¾Ð»Ð»ÐµÐºÑÐ¾Ñ Ñ ÑÐµÐºÑÐ¿ÐµÑÐ°ÑÐ¸ÐµÐ¹
Ð¾Ð¿ÑÐ¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ñ Ð¿Ð¾Ð»Ñ
high-frequency diagnostics
energy recovery
depressed collector
field optimization

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description: In this paper the regularities of formation of the high quality helical electron beam in gyrotrons and possibilities to increase their efficiency on this basis were determined. A new method for determining the velocity characteristics of electrons in the gyrotron beam was developed and the modeling of a diagnostic section based on this method for the experimental SPbPU gyrotron with a generation frequency of 74.2 GHz and a radiation power of 100 kW was carried out. The new method of effective spatial separation of electrons in the spent gyrotron beam based on their radial drift in crossed longitudinal electric and azimuthal magnetic fields was proposed. The results of designing of the multistage recovery systems for medium and high power gyrotrons based on the suggested separation method are presented. Methods of velocity spread reduction and suppression of parasitic low-frequency spatial charge oscillations in the helical electron beam by the optimization of electric and magnetic field distributions in the beam formation region were developed and experimentally tested, which allowed to increase the efficiency of the SPbPU gyrotron to 46% without recuperation and up to 60% with a single-stage recovery of residual electron energy.