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Fast-charging Blumlein pulse forming line

  • K. Masugata (a1), S. Tsuchida (a1), H. Saitou (a1), K. Yatsui (a1), K. Shibata (a2) and M. Shigeta (a2)...

Abstract

A fast-charging, discharge-switch-free Blumlein pulse forming line has been developed for high-voltage pulsed power generation. In the BL, a saturable charging inductor (CI) of amorphous metallic core is utilized and, as a result, fast-charging (charging time ≈220 ns) is obtained with a reduced prepulse. In addition, by using CI as a step-up transformer, the impedance of the output pulse can be converted to 4Z, Z, Z/4. By using the BL with a Marx generator of 300 kV and 1.1 kJ, an output of —580 kV at 24 kA and a pulse length of 60 ns are obtained, with a current rise time of less than 16 ns. The energy transfer efficiency of the line (output pulse energy/charging energy of a pulse forming line) is evaluated to be more than 92%.

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References

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Martin, J.C. 1992 Proc. IEEE 80, 934.
Masugata, K. et al. 1992 Proc. Int'l Conf. on High-Power Particle Beams, Washington, DC, p. 485.
Masugata, K. et al. 1994 Bull. Am. Phys. Soc. 39, 1691.
Melville, S. 1951 Proc. Inst. Elect. Eng. 98, 185.
Nation, J.A. 1979 Part. Accel. 10, 1.
Stockton, M. et al. 1982 J. Appl. Phys. 53, 2765.

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