Investigations of a Double-Gap Vircator at Submicrosecond Pulse Durations

Shlapakovski, A.; Queller, T.; Bliokh, Yu. P.; Krasik, Ya. E.

doi:10.1109/tps.2012.2190104

Cited by 33 publications

(22 citation statements)

References 17 publications

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“…However, double-anode vircators still have many problems that must be solved, including the slow start of oscillation and the short oscillation time. 15 There are also many points that are unclear both experimentally and theoretically, such as how the double-anode affects beam behavior and the microwave generation process. Topics for future research include optimizing the double-anode vircator on the basis of a beam behavior simulation and experiments using the PIC code "MAGIC" and elucidating the effects and phenomena of the double-anode by analyzing beam behavior using a beam collector and shunt.…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, the oscillated electromagnetic wave modulates the beam between the two anodes, thereby providing a feedback function and improving the oscillation efficiency and frequency stability. 15 The simulation results using the PIC code show that the maximum output can be obtained by installing the two anodes at a spacing of about 1/10 of the wavelength of the oscillation microwave. 16 Since the frequency and wavelength of the microwaves of the vircator driven by the ETIGO-IV are respectively 2.5 GHz and approximately 12 cm, we can postulate that maximum output can be obtained by setting the anode-anode distance d A-A between the two anodes to 12 mm.…”

Section: Effects and Operation Of Double-anode Configurationmentioning

confidence: 97%

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High Power Microwave Generation by Double-Anode Virtual Cathode Oscillator

et al. 2019

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The virtual cathode oscillator (vircator) is one of the promising devices to oscillate high-power microwaves. Simplicity and high-power capability are advantages. However, the low efficiency and frequency stability are serious problems. In this article, we dealt double anode to strengthen the microwave interactions. The measurement result shows that the output of the virtual cathode oscillator can be progress by using the double-anode. K E Y W O R D Sdouble-anode, feedback, high-power microwave, virtual cathode oscillator Electr Eng Jpn. 2020;210:11-18.

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Section: Resultsmentioning

confidence: 99%

Section: Effects and Operation Of Double-anode Configurationmentioning

confidence: 97%

High Power Microwave Generation by Double-Anode Virtual Cathode Oscillator

et al. 2019

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“…The emitting current equals 12 kA and it slightly exceeds the critical value that limits beam propagation through the second gap. This condition provides the efficient microwave generation in the double-gap vircator [9]. The electron beam passes through the first short section, and forms the VC in the second longer one.…”

Section: Main Partmentioning

confidence: 97%

“…[8] where it was shown that the feedback introduction allows to increase the device efficiency and frequency stability. The important problem here is the optimization of the device construction to achieve the additional efficiency increase and to improve the output characteristics of microwave radiation [9]. In the present work we present the basic results on the optimization of the double-gap vircator in CST Particle Studio (CST PS) that allows to carry out the effective 3D fully electromagnetic simulation of the microwave systems.…”

Section: Main Partmentioning

confidence: 99%

Optimization of the Double-Gap Vircator with Electromagnetic Feedback in CST Particle Studio

Kurkin¹,

Короновский²,

Hramov³

et al. 2014

IEEE International Vacuum Electronics Conference

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The report is devoted to the results of the numerical study and optimization of the double-gap vircator with electromagnetic feedback in CST Particle Studio. The optimal geometrical parameters of this generator when it demonstrates the maximal efficiency were defined for the different working frequencies. The dependencies of the double-gap vircator efficiency on the geometrical parameters were analyzed in the optimal region. The physical processes occuring in the optimized generator were investigated.

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“…1) and its differences from the virtode scheme. 27 The investigated VCA consists of a twosection (double-gap) rectangular radio frequency cavity. To the left of the resonating cavity, there is the cylindrical electron gun region 1 where a cathode 4 produces a solid cylindrical electron beam 10.…”

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confidence: 99%

High-power microwave amplifier based on overcritical relativistic electron beam without external magnetic field

Kurkin

Frolov

Рак

et al. 2015

Applied Physics Letters

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The high-power scheme for the amplification of powerful microwave signals based on the overcritical electron beam with a virtual cathode (virtual cathode amplifier) has been proposed and investigated numerically. General output characteristics of the virtual cathode amplifier including the dependencies of the power gain on the input signal frequency and amplitude have been obtained and analyzed. The possibility of the geometrical working frequency tuning over the range about 8%-10% has been shown. The obtained results demonstrate that the proposed virtual cathode amplifier scheme may be considered as the perspective high-power microwave amplifier with gain up to 18 dB, and with the following important advantages: the absence of external magnetic field, the simplicity of construction, the possibility of geometrical frequency tuning, and the amplification of relatively powerful microwave signals. V C 2015 AIP Publishing LLC.

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Investigations of a Double-Gap Vircator at Submicrosecond Pulse Durations

Cited by 33 publications

References 17 publications

High Power Microwave Generation by Double-Anode Virtual Cathode Oscillator

High Power Microwave Generation by Double-Anode Virtual Cathode Oscillator

Optimization of the Double-Gap Vircator with Electromagnetic Feedback in CST Particle Studio

High-power microwave amplifier based on overcritical relativistic electron beam without external magnetic field

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