DC photoemission gun upgrade at the compact ERL

N. Nishimori, R. Hajima, R. Nagai, M. Mori, M. Yamamoto, Y. Honda, T. Miyajima, T. Uchiyama

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

    1 Citation (Scopus)

    Abstract

    We have developed a DC photoemission gun at the compact ERL (cERL) at KEK for future energy recovery linac light sources and high repetition rate X-ray FELs. The cERL gun has stably provided beam for ERL commissioning and laser Compton scattering experiments since April 2013. The operational voltage has however been limited to 390 kV due to failures of two segments out of the full ten segmented ceramics. In order to recover 500 kV operation, we installed an additional two segmented ceramics on the existing ceramics during summer shutdown in 2015. We performed high voltage conditioning up to 548 kV and holding test at 500 kV for more than four hours. With the upgraded gun we demonstrated high current operation up to 1 mA at 390 kV as well as high voltage operation at 450 kV at the cERL.

    Original languageEnglish
    Title of host publicationIPAC 2016 - Proceedings of the 7th International Particle Accelerator Conference
    PublisherJoint Accelerator Conferences Website (JACoW)
    Pages3944-3946
    Number of pages3
    ISBN (Electronic)9783954501472
    Publication statusPublished - 2016
    Event7th International Particle Accelerator Conference, IPAC 2016 - Busan, Korea, Republic of
    Duration: 2016 May 82016 May 13

    Publication series

    NameIPAC 2016 - Proceedings of the 7th International Particle Accelerator Conference

    Other

    Other7th International Particle Accelerator Conference, IPAC 2016
    Country/TerritoryKorea, Republic of
    CityBusan
    Period16/5/816/5/13

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics
    • Atomic and Molecular Physics, and Optics

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