Numerical analysis of a pulsed compact LTD system for electron beam-driven radiography

David V. Rose, Dale R. Welch, Bryan V. Oliver, Joshua J. Leckbee, John E. Maenchen, David L. Johnson, Alexandre A. Kim, Boris M. Kovalchuk, Vadim A. Sinebryukhov

    Research output: Contribution to journalArticlepeer-review

    30 Citations (Scopus)

    Abstract

    This paper describes the configuration and operation of a seven-cavity linear transformer driver (LTD) system. This LTD system is configured to deliver ∼1 MV and 125 kA into a critically damped load. A detailed transmission line model coupled to particle-in-cell simulations is used to assess the system electrical performance. The evolution of the electron power flow in negative polarity is simulated, and the impact of this flow on the operation of the system with a large-area hollow electron beam diode is examined. The simulation results are compared with available electrical measurements and with dose rate measurements where a flash X-ray pulse is produced by an annular electron beam diode. These comparisons suggest that the LTD system meets the design specifications and is a robust pulsed power architecture. Additionally, the positive polarity operation for the LTD system driving a rod-pinch diode load is modeled to further assess the utility of the LTD system.

    Original languageEnglish
    Pages (from-to)1879-1887
    Number of pages9
    JournalIEEE Transactions on Plasma Science
    Volume34
    Issue number5 I
    DOIs
    Publication statusPublished - 1 Oct 2006

    Keywords

    • Linear transformer driver
    • Magnetically insulated transmission line
    • Particle-in-cell simulation
    • X-ray source

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics
    • Condensed Matter Physics

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