Low emittance electron beam transportation in compact ERL injector

T. Miyajima, Y. Honda, M. Yamamoto, T. Uchiyama, K. Harada, M. Shimada, R. Takai, T. Kume, S. Nagahashi, T. Obina, A. Ueda, S. Sakanaka, N. Nakamura, N. Nishimori, R. Nagai, R. Hajima, J. Hwang

    研究成果: Conference contribution

    2 被引用数 (Scopus)

    抄録

    For future light source based on Energy Recovery Linac (ERL), an injector, which consists of a photocathode DC gun and superconducting RF cavities, is a key part to generate a low emittance, short pulse and high bunch charge electron beam. In compact ERL (cERL), which is a test accelerator to develop key technologies for ERL, the generation of low emittance electron beam with 0.1 mm mrad normalized emit-tance and 390 keV beam energy from the photocathode DC gun, and the acceleration to 5.6 MeV by superconducting cavity, were demonstrated in the first beam commissioning. To keep the high quality in the beam transportation, understanding the beam optics, which is affected by not only the focusing effects due to the gun, solenoid magnets and RF cavities but also space charge effect, is required. In this paper, we show that how to measure and correct the gun focusing effect by experimental method. Using this method, we succeeded in correcting the numerical model to give the good agreement with the measured gun focusing effect for low charge beam. And, we show the space charge effect for high bunch charge beam.

    本文言語English
    ホスト出版物のタイトルIPAC 2014
    ホスト出版物のサブタイトルProceedings of the 5th International Particle Accelerator Conference
    出版社Joint Accelerator Conferences Website (JACoW)
    ページ3104-3106
    ページ数3
    ISBN(電子版)9783954501328
    出版ステータスPublished - 2014 7 1
    イベント5th International Particle Accelerator Conference, IPAC 2014 - Dresden, Germany
    継続期間: 2014 6 152014 6 20

    出版物シリーズ

    名前IPAC 2014: Proceedings of the 5th International Particle Accelerator Conference

    Other

    Other5th International Particle Accelerator Conference, IPAC 2014
    CountryGermany
    CityDresden
    Period14/6/1514/6/20

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

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