High-Current Electron-Beam Transport in the LIA-5 Linear Induction Accelerator

Nikiforov, D. A.; Blinov, Mikhail; Fedorov, V. V.; Petrenko, Alexey; Logachev, P. V.; Bak, P. A.; Zhivankov, K. I.; Иванов, А. В.; Starostenko, A. A.; Pavlov, O. A.; Kuznetsov, G. I.; Batazova, M. A.; Starostenko, D. A.; Петров, Д. В.; Nikitin, O. A.; Akhmetov, A. R.

doi:10.1134/s1547477120020156

Cited by 31 publications

(11 citation statements)

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“…1. Он состоит из инжектора электронного пучка и ускоряющей структуры [4][5][6]. Основным элементом инжектора является оксидный катод с диаметром 180 мм, который генерирует электронный пучок с током до 2 кА.…”

Section: общая схема лиуunclassified

“…Для этого решалась самосогласованная задача о транспортировке сильноточного РЭП в стационарных ускоряющих электрических и фокусирующих магнитных полях с учетом действия собственных электрических и магнитных полей пучка. Более детально методика расчета и подбора магнитных полей, а также сравнение результатов расчетов транспортировки релятивистского электронного пучка с экспериментальными данными описаны в [6]. На третьем этапе осуществлялся расчет транспортировки и ускорения пучка в ЛИУ с учетом его взаимодействия с полями наиболее неустойчивых дипольных мод, отобранных на первом этапе.…”

Section: моделирование поперечной неустойчивости сильноточного электр...unclassified

“…Значения тока в катушках выбиралось в соответствии с требованием минимальной амплитуды колебаний огибающей пучка для достижения минимума нормализованного эмиттанса пучка на выходе его из ЛИУ. Характерное значение этого эмиттанса для рабочих режимов настройки ускорителя ЛИУ в соответствии с результатами измерений составило ε n = 1063 ± 100 мм•мрад [6].…”

Section: описание модели для расчета динамики развития поперечной неу...unclassified

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Investigation of Transverse Instability of a High-Current Relativistic Electron Beam in a Linear Induction Accelerator

Sandalov

Sinitsky

Skovorodin

et al. 2022

jour

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The article presents the results of studies on the transverse instability of a high-current relativistic electron beam developing in a linear induction accelerator LIA for 5 MeV electron energy, which is created at the BINP SB RAS together with RFNC VNIITF. These results were obtained using a software package that makes it possible to simulate the dynamics of the instability development, as well as to calculate the increment of this instability averaged over the accelerator length. The package consists of four main parts. The first of them, made on the base of a three-dimensional model of the accelerating module electrodynamic system of the LIA, allows calculating the main characteristics of electromagnetic dipole modes of such a module, the second and third parts are designed to find three-dimensional accelerating electric and focusing magnetic fields, respectively. In the last part of the package, a system of ordinary differential equations is solved that describes both the motion of beam macroparticles in electric and magnetic fields, including the eigenmode fields, and the excitation of the mode fields by the electron beam. The adequacy of the physical models used in the software package was tested by comparing the spectra of field oscillations in the accelerator modules obtained in calculations and recorded in the experiment. On the base of the data obtained, the main regularities of the transverse beam instability development in the frequency range ∆f = 0.3–1.1 GHz were revealed, and possible methods for suppressing this instability in the LIA were proposed.

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Section: общая схема лиуunclassified

Section: моделирование поперечной неустойчивости сильноточного электр...unclassified

Section: описание модели для расчета динамики развития поперечной неу...unclassified

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Investigation of Transverse Instability of a High-Current Relativistic Electron Beam in a Linear Induction Accelerator

Sandalov

Sinitsky

Skovorodin

et al. 2022

jour

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“…A great progress in the development of research in this direction should be considered the project of a terahertz FEL based on the beam generated by a linear induction accelerator (LIA), proposed by the BINP SB RAS (Novosibirsk) in collaboration with the IAP RAS (Nizhny Novgorod) [27]. Such an accelerator, created by the BINP, has the following parameters: beam current -up to 2 kA, electron energy -up to 20 MeV, pulse duration -about 100 ns [28][29][30]. These parameters of the beam open up the possibility of generating submillimeter radiation with a narrow spectral line at an energy content in a single pulse of ∼ 10 − 100 J [28], [31][32][33][34][35].…”

Section: Introductionmentioning

confidence: 99%

“…Such an accelerator, created by the BINP, has the following parameters: beam current -up to 2 kA, electron energy -up to 20 MeV, pulse duration -about 100 ns [28][29][30]. These parameters of the beam open up the possibility of generating submillimeter radiation with a narrow spectral line at an energy content in a single pulse of ∼ 10 − 100 J [28], [31][32][33][34][35]. It should be noted that there are other physical and technical solutions for the generation of intense radiation in the submillimeter spectral region, which, unlike FELs, have a compact size; in particular, these are gyrotrons [16].…”

Section: Introductionmentioning

confidence: 99%

Energy Content and Spectral Composition of a Sub-Millimeter Radiation Flux Generated by a High-Current Electron Beam in a Plasma Column with Density Gradients

Sandalov¹

2022

Preprint

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<div>The paper presents the results of experimental studies on the radiation flux generation in the sub-millimeter wavelength range due to a strong beam-plasma interaction. A relativistic electron eam (REB) with parameters 0.5 MeV / 12 kA / 6 us pumps plasma waves in a plasma column with a length of ~2 m at a plasma density of ~10^15cm-3 in a magnetic field of B~4 T. In the presence of density gradients in the plasma column, direct measurements of the energy content of the radiation flux 18 cm in diameter leaving the plasma column into the atmosphere showed that its value reaches 5-7 J. The pulse duration of the flux at half of its amplitude was about of 0.5 ?s, therefore, the pulse power was at the level of ~ 10 MW. In this series of experiments, the spectral composition of the radiation flux in the frequency range 0.1-0.5 THz as well as the energy distribution function of the beam electrons passed through the plasma have been measured.</div>

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Oversized Modified Bragg Cavities for High-Power Long-Pulse Subterahertz Free-Electron Lasers

Peskov

Zaslavsky

Kornishin

2020

Radiophys Quantum El

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High-Current Electron-Beam Transport in the LIA-5 Linear Induction Accelerator

Cited by 31 publications

References 1 publication

Investigation of Transverse Instability of a High-Current Relativistic Electron Beam in a Linear Induction Accelerator

Investigation of Transverse Instability of a High-Current Relativistic Electron Beam in a Linear Induction Accelerator

Energy Content and Spectral Composition of a Sub-Millimeter Radiation Flux Generated by a High-Current Electron Beam in a Plasma Column with Density Gradients

Oversized Modified Bragg Cavities for High-Power Long-Pulse Subterahertz Free-Electron Lasers

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