Results of operating LIA-2 in radiograph mode

Starostenko, D. A.; Logachev, P. V.; Акимов, А. В.; Корепанов, А. А.; Bak, P. A.; Panov, A. N.; Pachkov, A. A.; Елисеев, А. А.; Ottmar, Andrey; Kulenko, Ya.; Bolkhovityanov, D. Yu.; Fatkin, George; Pavlov, O. A.; Kuznetsov, G. I.; Nikolaev, Igor; Batazova, M. A.; Batrakov, A. M.; Boimelshtein, Y.; Pavlenko, A. V.

doi:10.1134/s1547477114050264

Cited by 15 publications

(4 citation statements)

References 3 publications

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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

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

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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View full text Add to dashboard Cite

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“…The fact is that the state of target material depends on energy deposition per material atom which depends on the spot size of the beam. Figure 2 illustrates this dependency for the case of 2 MeV accelerator [1,2]. Despite of the lack of reliably measured beam profiles on the target it is shown that energy deposition of order of 100 eV atom can be achieved in radiographic units.…”

Section: Heating and Expansion Of Targetmentioning

confidence: 99%

“…Flash radiographic units based on linear induction accelerators (LIA) are widely used to study fast processes [1,2,3]. Basic principles of flash radiography is illustrated in figure 1.…”

Section: Introductionmentioning

confidence: 99%

Expansion of dense plasma formed on solid target exposed to focused electron beam

Skovorodin¹,

Trunev²,

Arakcheev³

et al. 2016

AIP Conference Proceedings

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“…Up to date, LIAs are in wide use because of their technical characteristics, such as the capability of generating several gamma-pulses in a row, high quality of electron beams [7,8]. The accuracy of radiography results depends on the size of electron beam focal spot.…”

Section: Introductionmentioning

confidence: 99%

Technique for measuring of LIA spot size on target by X-rays propagating in beam backward direction

Kolesnikov¹,

Politov²,

Li³

et al. 2020

J. Inst.

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We are propose a technique for measuring of a focal spot size directly during the shot of a radiographic facility based on a linear induction accelerator. The key feature of the proposed method is the penumbral imaging in the direction backward to the electron beam propagation. Diagnostic has been installed in a backward hemisphere of the target chamber of a linear induction accelerator. It consists of two parallel edge-knife (roll-bars with 500 mm radius of curvature), a thin BGO scintillator, and a CCD camera with a 7 microseconds shutter. The performance and operability of the diagnostic was demonstrated on the linear induction accelerator with energy of electrons of 4 MeV. The first experimental results of the beam spot measurements are presented. A radiation transport modeling of the diagnostic scheme was performed using Monte-Carlo code PRIZMA. The effect of the scattered bremsstrahlung on the penumbral image in the backward direction was analyzed.

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Results of operating LIA-2 in radiograph mode

Cited by 15 publications

References 3 publications

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

Expansion of dense plasma formed on solid target exposed to focused electron beam

Technique for measuring of LIA spot size on target by X-rays propagating in beam backward direction

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