• DocumentCode
    3623194
  • Title

    Measurements of higher order modes in 3rd harmonic RF cavity at Fermilab

  • Author

    C.M. Bhat

  • Author_Institution
    Fermi Nat. Accel. Lab., Batavia, IL, USA
  • fYear
    1993
  • Firstpage
    787
  • Abstract
    We have measured the R/sub sQ for several higher order modes of the modified CERN 159 MHz RF cavity up to 1.5 GHz using bead-pull as well as stretched-wire methods. The data have been compared with the predictions of 2D code URMEL. Attempts have been made to investigate coupled-bunch instabilities that can arise from higher order modes of the cavity with the beam-on conditions. No resonances of the third harmonic cavity below 800 MHz were found to give rise to any noticeable beam instability.
  • Keywords
    "Radio frequency","Q measurement","Magnetic field measurement","Optical coupling","Impedance measurement","Magnetic resonance","Resonant frequency","Phase measurement","Laboratories","Perturbation methods"
  • Publisher
    ieee
  • Conference_Titel
    Particle Accelerator Conference, 1993., Proceedings of the 1993
  • Print_ISBN
    0-7803-1203-1
  • Type

    conf

  • DOI
    10.1109/PAC.1993.308774
  • Filename
    308774
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3623194