title: Development of a compact generator for gigawatt, nanosecond high-voltage pulses.
abstract: A compact generator producing 2.2-ns 1.5 GW high-voltage pulses was developed. The generator employed a 27.6 Ω, 0.9 ns pulse-forming-line (PFL), which was charged by an iron core transformer with a turn ratio of 2:33.5 and a coefficient of 0.94. A 1.2 μF, 20 kV capacitor and a hydrogen thyratron were used in the primary circuit. When the thyratron closed at 14.5 kV, 3.4% of the energy stored in the capacitor was delivered to the PFL in 850 ns, producing a peak voltage of up to ∼500 kV. In addition, the principle of triple resonance transformation was employed by adding a 50 pF tuning capacitor and a 1.15 mH inductor between the transformer and the PFL, which led to a significant reduction of the duration and peak value of the transformer voltage without reducing that in the PFL. Meanwhile, an adjustable self-break oil switch was applied. By using transmission lines with impedance overmatched to that of the PFL, the generator delivered a 512 kV pulse across an electron beam diode, generating radiation with a dose of 20 mR/pulse at 20 cm ahead of the diode. The generator provides an excellent ultra-short radiation pulse source for the studies on radiation physics.
authors.affiliation: Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, P.O. Box 919-226, Mianyang 621999, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Zhou
authors.affiliation: Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, P.O. Box 919-226, Mianyang 621999, China.
authors.forename: Zhanxing
authors.initials: Z
authors.lastname: Jiang
authors.affiliation: Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, P.O. Box 919-226, Mianyang 621999, China.
authors.forename: Chuan
authors.initials: C
authors.lastname: Liang
authors.affiliation: Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, P.O. Box 919-226, Mianyang 621999, China.
authors.forename: Mingjia
authors.initials: M
authors.lastname: Li
authors.affiliation: Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, P.O. Box 919-226, Mianyang 621999, China.
authors.forename: Wenchuan
authors.initials: W
authors.lastname: Wang
authors.affiliation: Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, P.O. Box 919-226, Mianyang 621999, China.
authors.forename: Zhenghong
authors.initials: Z
authors.lastname: Li