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

Y. Nishimura, T. Takahashi, Kazuyuki Sakaue, Masakazu Washio, T. Takatomi, J. Urakawa

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

2 Citations (Scopus)

Abstract

We have been developing an S-band Cs-Te photocathode rf electron gun system for pulse radiolysis and laser Compton scattering experiment at Waseda University. These researches demand 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 that of transverse. With this technique, the longitudinal bunch profile can be obtained as the transverse profile. We used the 3D electromagnetic simulation codes HFSS for designing rf-deflector cavity and GPT for beam tracking. The cavity has 2 cell structures operating on p mode, standing wave, dipole (TM 120) mode at 2856 MHz. We have confirmed on HFSS that 2 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 conference, we will present the cavity structure design, the present progresses and future plan.

Original languageEnglish
Title of host publicationIPAC 2013: Proceedings of the 4th International Particle Accelerator Conference
Pages2753-2755
Number of pages3
Publication statusPublished - 2013
Event4th International Particle Accelerator Conference, IPAC 2013 - Shanghai
Duration: 2013 May 122013 May 17

Other

Other4th International Particle Accelerator Conference, IPAC 2013
CityShanghai
Period13/5/1213/5/17

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

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 IPAC 2013: Proceedings of the 4th International Particle Accelerator Conference (pp. 2753-2755)