Stability analysis of the RF linac based on an AR model

R. Kato, S. Isaka, H. Sakaki, S. Kashiwagi, G. Isoyama

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)


We are pursing operational stability of the RF linac with a method of system analysis. The RF phase and the power for the pre-buncher have been measured, together with environmental parameters including temperatures of the main components, the room temperatures and the AC line voltage. The measured data have been analyzed with the autoregressive model, and the feedback structure of the system has been derived from noise contribution ratios and impulse responses analysis. It was found that the AC line voltage and the temperatures of the klystron room significantly affected operational stability of the linac.

Original languageEnglish
Pages (from-to)244-248
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number1-2
Publication statusPublished - 2004 Aug 1
Externally publishedYes
EventProceedings of the 25th International Free Electron Laser - Tsukuba,Ibaraki, Japan
Duration: 2003 Sept 82003 Sept 12


  • Linear accelerators
  • Noise
  • Time-series analysis

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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