Transverse C-band deflecting structure for longitudinal electron-bunch-diagnosis in XFEL "sACLA"

H. Ego, H. Maesaka, T. Sakurai, Y. Otake, T. Hashirano, S. Miura

研究成果: Article査読

16 被引用数 (Scopus)

抄録

In the 8 GeV compact X-ray FEL "SACLA," a single bunch of electrons is compressed to a duration of approximately 30 fs to yield a peak current of 3 kA, which creates brilliant self-amplified spontaneous emission. To measure the longitudinal profile of an ultrashort electron bunch and verify the compression, we developed a high-gradient C-band RF deflecting structure 1.8 m long and periodically loaded with racetrack-shaped irises. The irises generated a high deflection gradient for the vertically deflecting HEM11-5π/6 dipole mode and suppressed rotation of the deflection plane. The two structures were fabricated and generated a stable total deflecting voltage exceeding 60 MV and revealed the longitudinal electron-bunch profile with an effective time resolution of approximately 10 fs.

本文言語English
ページ(範囲)381-388
ページ数8
ジャーナルNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
795
DOI
出版ステータスPublished - 2015 6月 29
外部発表はい

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学
  • 器械工学

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