Development of a 1 MV ultra-fast LTD generator

F. Bayol, F. Cubaynes, R. Delplanque, P. Genez, C. Legras, M. Parzych, M. Toury, M. Caron, M. Mouillet, A. A. Kim

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    6 Citations (Scopus)


    A 1 MV linear transformer driver (LTD) generator has been manufactured by ITHPP and SEIV, and delivered to CEA/DIF/Polygone d'Expérimentation de Moronvilliers, in order to demonstrate the capability of this technology for flash X-ray radiography applications. This generator is composed of 10 cavities; each cavity includes 16 bricks representing two capacitors (GA 35436, 100kV, 8nF) and one multi-gaps air pressurized switch. To reduce the resistive losses in the switches, the inter-electrode gaps have been reduced from 6 mm in initial design to 4 mm, and the dry air pressure has been slightly increased. Each cavity has been tested individually on an automated testbed using a low inductive resistive load (∼1.2nH) and extensive diagnostics, including a set of sixteen capacitive probes in front of each switch to control their timing sequence. The cavities deliver more than 100kV at ±100kV charging voltage into a matched load of 0.55-0.6Ω in a ∼70-ns FWHM pulse. Around 300 shots have been made on each cavity (to condition the switches) before their integration into the generator.

    Original languageEnglish
    Title of host publicationDigest of Technical Papers-IEEE International Pulsed Power Conference
    Number of pages6
    Publication statusPublished - 2011
    Event18th IEEE International Pulsed Power Conference, PPC 2011 - Chicago, IL, United States
    Duration: 19 Jun 201123 Jun 2011


    Other18th IEEE International Pulsed Power Conference, PPC 2011
    CountryUnited States
    CityChicago, IL

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Energy Engineering and Power Technology

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