Development of longitudinal feedback system for a storage ring free electron laser

S. Koda, M. Hosaka, J. Yamazaki, M. Katoh, H. Hama

Research output: Contribution to journalConference article

15 Citations (Scopus)

Abstract

A longitudinal feedback system for a storage ring free electron laser (SRFEL) has been developed at the UVSOR. Instantaneous temporal deviation of the FEL optical pulse with respect to the electron bunch is measured in the frequency domain by detecting a phase between higher harmonic components of respective revolution frequencies. The phase deviation is fed back to control the storage ring RF frequency so as to readjust the effective length of the optical cavity. Compensating for the temporal drift with the feedback system, synchronism between the FEL micropulse and the electron bunches was successfully maintained for a reasonably long time.

Original languageEnglish
Pages (from-to)211-216
Number of pages6
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume475
Issue number1-3
DOIs
Publication statusPublished - 2001 Nov 21
Event22nd International Free Electron Laser Conference (FEL 2000) - Durham, NC, United States
Duration: 2000 Aug 132000 Aug 18

Keywords

  • Longitudinal feedback
  • Phase detection
  • Storage ring free electron laser

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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