Linear Induction Accelerators for High-Power Microwave Devices

Vintizenko, I. I.

doi:10.1201/9780429488351

2018

DOI: 10.1201/9780429488351

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Linear Induction Accelerators for High-Power Microwave Devices

I. I. Vintizenko

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2023

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“…Introduction: The features of reflex triodes are their simplicity and an absence of a magnetic system [1,2]. Power suppliers with low source impedance, such as high-power pulsed electron accelerators or air-core linear induction accelerators (LIAs), are needed.…”

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confidence: 99%

Reflex triode of axial symmetric design

Vintizenko

2016

Electron. lett.

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The prospects of the practical application of reflex triodes are connected with the constructional features of these high-power microwave oscillators. The results of experimental investigations of an original design of a reflex triode are presented. A scheme of the triode allows provision of a symmetric current supply to the device grid. A linear induction accelerator (LIA) with low source impedance has been used. The LIA is made using a composition approach, where the main parts of the accelerator are placed within one cylindrical tank.

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Reflex triode of axial symmetric design

Vintizenko

2016

Electron. lett.

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Characterizing the high-power-microwaves radiated by an axial output compact S-band A6 segmented magnetron fed by a split cathode and powered by a linear induction accelerator

Belozerov

Krasik

Leopold

et al. 2023

Journal of Applied Physics

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In a recent publication [J. Appl. Phys. 131, 023301 (2022)], microwave generation by a segmented A6 S-band axial output relativistic magnetron (RM) fed by a split cathode and powered by a small pulsed power generator was demonstrated for the first time. In the present article, we add to the same RM a mode converter and an antenna and drive it by using a modified linear induction accelerator (LIA) (≤450 kV, ≤4 kA, ∼150 ns). It was found that the operation of the RM for a split cathode or a common explosive emission cathode differs significantly. For a split cathode, we optimize for the best microwave output, its geometrical parameters, the external magnetic field, and the LIA's charging voltages. For the optimal choice of these parameters, the RM generates ∼160 ns long microwave pulses of ∼130 MW, 1.78 GHz frequency with an electronic efficiency of ∼40%, without pulse shortening. On the other hand, a common solid cathode fed RM showed microwave pulse shortening. We demonstrated that the segmented anode allows using a μs-timescale magnetic field, making it possible for the RM to operate repetitively.

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Linear Induction Accelerators for High-Power Microwave Devices

Cited by 2 publications

References 0 publications

Reflex triode of axial symmetric design

Reflex triode of axial symmetric design

Characterizing the high-power-microwaves radiated by an axial output compact S-band A6 segmented magnetron fed by a split cathode and powered by a linear induction accelerator

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