Simulation of Non-Uniform Electron Beams in the Gyrotron Electron-Optical System

Louksha, O. I.; Trofimov, P. A.

doi:10.1134/s106378421804014x

Cited by 8 publications

(4 citation statements)

References 21 publications

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“…The values of δv  were defined as the standard deviation from the average value of transverse velocity. The sectioned cathode, as compared with the uniform cathode, is characterized by increased velocity and energy spreads as well as an additional radial displacement of electrons due to the action of crossed azimuthal electric and longitudinal magnetic fields [19]. The strong magnetic field provides conservation of the required electron distribution along the azimuthal coordinate for the sectioned cathode during propagation of the beam from the cathode to the collector entrance.…”

Section: Trajectory Analysis Of Heb In the Gyrotron Electron-optical mentioning

confidence: 99%

Simulation of high-efficiency gyrotron with the system of multistage energy recovery

Trofimov

Louksha

2019

ITM Web Conf.

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The results of simulations of helical electron beam formation and collecting, as well as high frequency wave-particle interaction processes, in the moderate-power experimental gyrotron with the frequency of 74.2 GHz are presented. Various methods of beam quality and electron efficiency improvement via optimization of electric and magnetic field distributions in the cathode region were realized. In the optimal operating regime with high pitch ratio and low velocity spread, the electron efficiency of about 46 % was calculated for the gyrotron with the magnetron injection gun including a control electrode and a cathode with sectioned emission. In the gyrotron collector region, a system of 4-stage electron energy recovery was used for enhancement of total efficiency of the device. By improving the quality of the electron beam and efficient energy recovery in the collector region, the total efficiency of the gyrotron equal to 71.8% was achieved.

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Section: Trajectory Analysis Of Heb In the Gyrotron Electron-optical mentioning

confidence: 99%

Simulation of high-efficiency gyrotron with the system of multistage energy recovery

Trofimov

Louksha

2019

ITM Web Conf.

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“…1). В состав катодного блока пушки входит управляющий электрод, изменением потенциала которого можно изменять средний питч-фактор и скоростной разброс электронов [9,24]. Основные параметры гиротрона приведены в табл.…”

Section: траекторный анализ вэп в электронно-оптической системе гиротunclassified

“…2. Неоднородная эмиссия с катода является одним из факторов, ухудшающих качество ВЭП (например, [24]). Поэтому при переходе от однородного к секционированному катоду увеличивается разброс электронов по скоростям и по энергиям, а также возникает дополнительное смещение электронов по радиусу изза действия скрещенных азимутального электрического W, keV и продольного магнитного полей.…”

Section: траекторный анализ вэп в электронно-оптической системе гиротunclassified

Высокоэффективный Гиротрон С Многоступенчатой Рекуперацией Остаточной Энергии Электронов

Лукша¹,

Трофимов²

2019

Журнал Технической Физики

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The results of combined simulation of physical processes in a medium power gyrotron of 4-mm wavelength range are presented. The methods of improving the quality of helical electron beam and the electron efficiency of the gyrotron, based on the optimization of electric field distribution in the near-cathode region, are realized. The design of the collector with 4-stage recovery of residual beam energy, based on the method of spatial separation of electrons in crossed azimuthal magnetic and axial electric fields, was developed. The value of total efficiency of the gyrotron equal to 71.8 % was achieved by improving the quality of the electron beam and by efficient energy recovery in the collector region.

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“…The theoretical analysis of HEBs has so far been carried out mainly in the framework of two-dimensional numerical models assuming axial symmetry of the current density distribution [6][7]. Recently appeared first works devoted to the trajectory analysis of HEBs in the three-dimensional approximation [8][9][10] used a simplified physical model of the beam and were devoted to the study of a limited number of simplest configurations of adiabatic MIGs with broken azimuthal symmetry of the beam current. Finally, we note that the emergence of new variants of non-adiabatic formation systems [3] requires consideration of the EOS, where both the axial symmetry of some electrodes and the uniformity of the current density distribution in azimuth are violated simultaneously.…”

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confidence: 99%

Three-dimensional nonadiabatic electron- optical gyrotron systems with inhomogeneous current density

2019

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Simulation of Non-Uniform Electron Beams in the Gyrotron Electron-Optical System

Cited by 8 publications

References 21 publications

Simulation of high-efficiency gyrotron with the system of multistage energy recovery

Simulation of high-efficiency gyrotron with the system of multistage energy recovery

Высокоэффективный Гиротрон С Многоступенчатой Рекуперацией Остаточной Энергии Электронов

Three-dimensional nonadiabatic electron- optical gyrotron systems with inhomogeneous current density

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