Longitudinal diagnostics of RF electron gun using a 2-cell RF deflector

M. Nishiyama, T. Takahashi, T. Toida, Kazuyuki Sakaue, Masakazu Washio, T. Takatomi, J. Urakawa

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

Abstract

We have been studying a compact electron accelerator based on an S-band Cs-Te photocathode rf electron gun at Waseda University. We are using this high quality electron bunch for many application researches. It is necessary to measure the bunch length and temporal distribution for evaluating application researches and for improving an rf gun itself. Thus, we adopted the rf deflector system. It kicks the electron bunch with resonated rf electromagnetic field. Using this technique, the longitudinal distribution is mapped into the transverse space. The rf deflector has a 2-cell standing wave π-mode structure, operating in TM210 dipole mode at 2856 MHz. It provides a maximum vertical kick of 1.00MV with 750 kW input rf-power which is equivalent to the temporal resolution of around 58 fs bunch length. In this conference, we report the details of our rf deflector, the latest progress of longitudinal phase space diagnostics and future prospective.

Original languageEnglish
Title of host publicationProceedings of the 36th International Free Electron Laser Conference, FEL 2014
PublisherJoint Accelerator Conferences Website (JACoW)
Pages929-932
Number of pages4
ISBN (Electronic)9783954501335
Publication statusPublished - 2014
Event36th International Free Electron Laser Conference, FEL 2014 - Basel, Switzerland
Duration: 2014 Aug 252014 Aug 29

Other

Other36th International Free Electron Laser Conference, FEL 2014
CountrySwitzerland
CityBasel
Period14/8/2514/8/29

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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  • Cite this

    Nishiyama, M., Takahashi, T., Toida, T., Sakaue, K., Washio, M., Takatomi, T., & Urakawa, J. (2014). Longitudinal diagnostics of RF electron gun using a 2-cell RF deflector. In Proceedings of the 36th International Free Electron Laser Conference, FEL 2014 (pp. 929-932). Joint Accelerator Conferences Website (JACoW).