• DocumentCode
    2150716
  • Title

    Comments on the behavior of alpha 1 in main injector gamma /sub t/ jump schemes

  • Author

    Bogacz, S.A. ; Peggs, S.

  • Author_Institution
    Fermi Nat. Accel. Lab., Batavia, IL, USA
  • fYear
    1991
  • fDate
    6-9 May 1991
  • Firstpage
    1657
  • Abstract
    Tracking studies of transition crossing in the main injector have shown that the Johnsen effect is the dominant cause of beam loss and emittance blow up. To suppress this effect one must have control over alpha /sub 1/ (dispersion of the momentum compaction factor alpha ). Various gamma /sub t/ jump configurations are examined and the resulting changes in alpha /sub 1/-formulas are derived for a model FODO lattice with full chromaticity compensation in the presence of an eddy current sextupole component.<>
  • Keywords
    beam handling equipment; particle beam diagnostics; proton accelerators; FODO lattice; Fermilab; Johnsen effect; beam loss; chromaticity compensation; eddy current sextupole component; gamma /sub t/ jump schemes; main injector; momentum compaction factor; transition crossing; Azimuth; Contracts; Eddy currents; Educational institutions; Equations; Extraterrestrial measurements; Lattices; Phase measurement; Predictive models; Radio frequency;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Particle Accelerator Conference, 1991. Accelerator Science and Technology., Conference Record of the 1991 IEEE
  • Conference_Location
    San Francisco, CA, USA
  • Print_ISBN
    0-7803-0135-8
  • Type

    conf

  • DOI
    10.1109/PAC.1991.164735
  • Filename
    164735
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2150716