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Characteristics of pulsed power generator by versatile inductive voltage adder

Published online by Cambridge University Press:  05 December 2005

KIYOSHI YATSUI ,
KOUICHI SHIMIYA ,
KATSUMI MASUGATA ,
MASAO SHIGETA  and
KAZUHIKO SHIBATA
KIYOSHI YATSUI
Affiliation:
Extreme Energy-Density Research Institute, Nagaoka University of Technology, Nagaoka, Niigata, Japan
KOUICHI SHIMIYA
Affiliation:
Extreme Energy-Density Research Institute, Nagaoka University of Technology, Nagaoka, Niigata, Japan
KATSUMI MASUGATA
Affiliation:
Extreme Energy-Density Research Institute, Nagaoka University of Technology, Nagaoka, Niigata, Japan
MASAO SHIGETA
Affiliation:
Extreme Energy-Density Research Institute, Nagaoka University of Technology, Nagaoka, Niigata, Japan Permanent address: Ferrite Division, TDK Corporation, Narita, Chiba 286-8588, Japan.
KAZUHIKO SHIBATA
Affiliation:
Extreme Energy-Density Research Institute, Nagaoka University of Technology, Nagaoka, Niigata, Japan Permanent address: Ferrite Division, TDK Corporation, Narita, Chiba 286-8588, Japan.
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Abstract

A pulsed power generator by inductive voltage adder, versatile inductive voltage adder (VIVA-I), which features a high average potential gradient (2.5 MV/m), was designed and is currently in operation,. It was designed to produce an output pulse of 4 MV/60 ns by adding 2 MV pulses in two-stages of induction cells, where amorphous cores are installed. As a pulse forming line, we used a Blumlein line with the switching reversed, where cores are automatically biased due to the presence of prepulse. Good reproducibility was obtained even in the absence of the reset pulse. Within ∼40% of full charge voltage, pulsed power characteristics of Marx generator, pulse forming line (PFL), transmission line (TL), and induction cells were tested for three types of loads; open-circuit, dummy load of liquid (CuSO4) resistor, and electron beam diode. In the open-circuit test, ∼2.0 MV of output voltage was obtained with good reproducibility. Dependences of output voltage on diode impedances were evaluated by using various dummy loads, and the results were found as expected. An electron-beam diode was operated successfully, and ∼18 kA of beam current was obtained at the diode voltage of ∼1 MV.

Keywords

Highly potential gradientInductive voltage adderPulsed electron beamPulsed power generator
Type
Research Article
Information
Laser and Particle Beams , Volume 23 , Issue 4 , October 2005 , pp. 573 - 581
Copyright
© 2005 Cambridge University Press

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