Characteristics of pulsed power generator by versatile inductive voltage adder

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 us by adding 2 MV Pulse,, 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 similar to 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-crcuit test, similar to 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 similar to 18 kA of beam current was obtained at the diode voltage of similar to 1 MV.