• DocumentCode
    1978551
  • Title

    90°-apart-stem RFQ structure for wide range of frequencies

  • Author

    Andreev, V.A. ; Parisi, G.

  • Author_Institution
    ITEP, Moscow, Russia
  • fYear
    1993
  • fDate
    17-20 May 1993
  • Firstpage
    3124
  • Abstract
    At present, many different resonant RFQ structures for accelerating both light and heavy ions are successfully used. Usually they are divided into two well known groups: 4-vane and 4-rod structures, each of them having its merits and drawbacks. In this paper a new resonant structure is considered, which combines the advantages of both. It may be seen as a 4-vane structure with holes (“windows”) in the vanes, or as a 4-rod one having stems located 90° apart from each other and from the beam direction. Thus, changing the window size, such a structure can be modified from a typical 4-rod resonator, working at 50 MHz or less, to a typical 4-vane one, working at higher frequencies (up to 500 MHz) and having a better frequency distinction between operating and unwanted dipole modes, due to the magnetic coupling between neighbouring quadrants through the holes. It also should be noted that no voltage arises on the beam axis in the gap between end plate and electrodes, provided that horizontal and vertical windows have the same longitudinal position. Computer simulations with MAFIA codes are presented and compared with cold model measurements
  • Keywords
    beam handling equipment; digital simulation; 4-rod structure; 4-vane structure; 50 to 500 MHz; MAFIA simulation; RFQ structure; Acceleration; Blades; Couplings; Electrodes; Laboratories; Magnetic field measurement; Magnetic separation; Radio frequency; Resonance; Video recording;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Particle Accelerator Conference, 1993., Proceedings of the 1993
  • Conference_Location
    Washington, DC
  • Print_ISBN
    0-7803-1203-1
  • Type

    conf

  • DOI
    10.1109/PAC.1993.309574
  • Filename
    309574