Study on two-cell rf-deflector cavity for ultra-short electron bunch measurement

Y. Nishimura, T. Takahashi, K. Sakaue, M. Washio, T. Takatomi, J. Urakawa

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

Abstract

We have been developing an S-band Cs-Te photocathode rf electron gun system for various application researches such as pulse radiolysis experiments and laser Compton scattering experiments at Waseda University. These researches demande for high quality and well controlled electron beam. In order to measure the ultra-short electron bunch, we decided to use rf-deflector cavity, which can convert the longitudinal distribution to the transverse. With this technique, the longitudinal bunch profile can be obtained as the transverse profile on the screen monitor. We used the 3D electromagnetic field simulation codes HFSS for designing rf-deflector cavity and GPT for beam tracking. The cavity has two-cell structures operating on π-mode, standing wave, dipole(TM120)mode at 2856 MHz. We have confirmed on HFSS that two-cell rf-deflector cavity can produce 660 G magnetic field per cell on beam line with 750 kW input rf-power. This field strength is equivalent with our target, which is 100 fs bunch length measurement at 4.3 MeV. In this paper, we will present the cavity structure design, and the measurement results of manufactured cavity.

Original languageEnglish
Title of host publication2013 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2013
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781479905348
DOIs
Publication statusPublished - 2013 Jan 1
Event2013 60th IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2013 - Seoul, Korea, Republic of
Duration: 2013 Oct 272013 Nov 2

Publication series

NameIEEE Nuclear Science Symposium Conference Record
ISSN (Print)1095-7863

Other

Other2013 60th IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2013
CountryKorea, Republic of
CitySeoul
Period13/10/2713/11/2

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging

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    Nishimura, Y., Takahashi, T., Sakaue, K., Washio, M., Takatomi, T., & Urakawa, J. (2013). Study on two-cell rf-deflector cavity for ultra-short electron bunch measurement. In 2013 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2013 [6829754] (IEEE Nuclear Science Symposium Conference Record). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NSSMIC.2013.6829754