Repetitive pulsed-power generator "ETIGO-IV"

Tokuchi, Akira; Ninomiya, N.; Jiang, Weihua; Yatsui, Kiyoshi

doi:10.1109/tps.2002.806644

Cited by 43 publications

(6 citation statements)

References 11 publications

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“…In this experiment, we set the anode‐anode distance d A‐A to 12 mm and the charging voltage V charge to 22 kV. In the ETIGO‐IV, generally, as the cathode‐anode distance d A‐K increases, the voltage increases and the current decreases, but comparing Figure C and Figure , we do not see any large changes in voltage and current. However, we did confirm that the microwave maximum power decreased and the microwave oscillation time was shortened by increasing the cathode‐anode distance d A‐K .…”

Section: Experiments Resultsmentioning

confidence: 93%

“…The rated power output of this machine was 400 kV, the rated output current was 13 kA, the pulse width was 120 ns, the repetition rate was 1 Hz, and the output was carried out in negative voltage mode …”

Section: Experiments Systemmentioning

confidence: 99%

“…Waveform of diode voltage and current, microwave, and microwave power (electrode gap of 21 mm) [Color figure can be viewed at wileyonlinelibrary.com]…”

Section: Experiments Systemmentioning

confidence: 99%

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High‐power microwave generation by double‐anode virtual cathode oscillator

Nagao

Takatsu

Thuan

et al. 2020

Electrical Engineering Japan

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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.

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Section: Experiments Resultsmentioning

confidence: 93%

Section: Experiments Systemmentioning

confidence: 99%

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High‐power microwave generation by double‐anode virtual cathode oscillator

Nagao

Takatsu

Thuan

et al. 2020

Electrical Engineering Japan

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show abstract

“…At the same time, we calculated the microwave power by measuring the microwaves with a microwave detector F I G U R E 5 Waveform of diode voltage and current, microwave, and microwave power (electrode gap of 21 mm) 11,12 [Color figure can be viewed at wileyonlinelibrary.com] (Anritsu 75N50B), and calculated and spatially integrated the microwave power density at various angles by mV-dBm conversion. Moreover, the microwave energy efficiency was defined as the ratio of the input energy obtained by time integration (interval from -50 ns to 250 ns) of the product of voltage and current (input power) to the microwave energy obtained by time integration of the microwave power (interval from -50 ns to 250 ns).…”

Section: -1 High Repetitive Pulsed-power Generator "Etigo-iv"mentioning

confidence: 99%

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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“…The lines show the Hull cutoff and Buneman-Hartree resonance conditions [9] for the A6 magnetron. The power source is a repetitive pulsed-power generator ETIGO IV [10], which is capable of delivering, to a matched load, an output pulse of 400 kV in voltage, 13 kA in current, and 130 ns in pulse width, at a repetition rate of 1 Hz. The diamond dots and the line represent the Hull criterion.…”

Section: Schematic Of Magnetron and Transparent Cathodementioning

confidence: 99%

Experimental Examination of Diode Features in a High-Power Magnetron with a Transparent Cathode

Yamazaki

Jiang

2008

Plasma and Fusion Research

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is a high efficiency microwave source, although the energy conversion efficiency of a pulsedpower magnetron with a relativistic electron beam is less than that of a non-relativistic magnetron. We studied the possibility of increasing the energy conversion efficiency of a high-power magnetron using a transparent cathode. The conversion efficiency is controlled by the resonance efficiency between the electron beam and microwave oscillation, and initial rise time of the oscillation. In particular, the initial rise time of interaction with the pulsed-power generator is important. The transparent cathode can lower start-up times and enhance the oscillation efficiency. It consists of independent cathode strips, each of which produces an azimuthal magnetic field. The radial drift velocity of electrons emitted from this cathode is accelerated more than that of electrons emitted from a normal cathode. In particle-in-cell electron simulation, the availability of the transparent cathode was indicated. We investigated the experimental effect of the transparent cathode. The experimental setup of the relativistic magnetron is operated with "ETIGO IV," which is a 400-kV-class repetitive pulsed-power generator. The start-up time of magnetron with the transparent cathode is shorter than that with a traditional cathode. We expect that the transparent cathode method will be advantageous over the current method.

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Repetitive pulsed-power generator "ETIGO-IV"

Cited by 43 publications

References 11 publications

High‐power microwave generation by double‐anode virtual cathode oscillator

High‐power microwave generation by double‐anode virtual cathode oscillator

High Power Microwave Generation by Double-Anode Virtual Cathode Oscillator

Experimental Examination of Diode Features in a High-Power Magnetron with a Transparent Cathode

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