Design of a two-cell rf-deflector cavity for ultra-short electron bunch measurement

Nishimura, Y.; Sakaue, Kazuyuki; Nishiyama, Masashi; Takahashi, Tomohiro; Washio, Masakazu; Takatomi, T.; Urakawa, J.

doi:10.1016/j.nima.2014.07.035

Cited by 11 publications

(1 citation statement)

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“…16) Early in 2014 we reported the design and characteristics of our rf deflector cavity. 17) The device was confirmed to have a temporal resolution of 58 fs (rms) in low level rf measurements and simulations performed with an input rf power of 750 kW, the drift space of 1 m, and initial beam size of 230 µm (rms). This resolution is sufficient for measuring the temporal profile of ps bunches.…”

Section: Introductionmentioning

confidence: 88%

Temporal profile measurement of an electron bunch with the two-cell rf deflecting cavity at Waseda University

Sakaue

Nishimura

Nishiyama

et al. 2015

Jpn. J. Appl. Phys.

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Our group at Waseda University developed an rf deflector system for measuring longitudinal. In this study we evaluated the temporal resolution of an S-band two-cell rf deflector cavity built into the system and performed a series of longitudinal profile measurements of electron bunch from an rf photocathode gun. The rf deflector system achieved a temporal resolution of 147.6 fs (rms), the value gave in close agreement with the design specification. We present our experimental results and discussion how the temporal profile was influenced by the rf electric field and space charge effect in the electron bunch from the rf photo cathode gun. Our results agreed with the results of a beam tracking simulation. The successful results of longitudinal profile measurements in this study confirm that our deflector system will be quite useful for improving an rf electron gun cavities.

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Section: Introductionmentioning

confidence: 88%