Two-electrode gas switch with electrodynamical acceleration of a discharge channel

B. M. Kovalchuk, A. V. Kharlov, E. V. Kumpyak, N. V. Tsoy

    Результат исследований: Материалы для журналаСтатья

    5 Цитирования (Scopus)

    Аннотация

    High-energy switches and trigger generators are required for MJ-level capacitor banks. We have developed a compact gas switch and a matched series injection trigger generator. A series inductance is required for isolation of the trigger pulse from the surrounded circuit. A saturable inductor is employed here because low inductance is needed after the switch breakdown. The switch is of coaxial two-electrode design with electrodynamic acceleration of a spark channel. The switch operates at atmospheric pressure. The spark gap can be triggered reliably down to zero voltage (at 50 kV self-breakdown voltage) with less than 35 ns timing jitter. Energy losses in this spark gap have been accurately investigated. The main results are as follows: energy losses in the switch do not exceed 4% at voltages higher than 15 kV, i.e., when operation voltage exceeds ∼36% of the self-breakdown voltage. The spark gap is designed for 24 kV charging voltage, at a current up to 250 kA, and ∼70 C charge transfer. In this paper, we present a design for the spark gap, inductor and trigger generator. Test bed schematics and results of the tests are also described.

    Язык оригиналаАнглийский
    Номер статьи123504
    ЖурналReview of Scientific Instruments
    Том86
    Номер выпуска12
    DOI
    СостояниеОпубликовано - 1 дек 2015

    ASJC Scopus subject areas

    • Instrumentation

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