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Bazzano, G.

Paper Title Page
WEPCH022 Study of the Effect of Multipolar Components in the SPARC Emittance Compensation Gun Solenoid 1969
 
  • C. Ronsivalle, G. Dattoli, L. Picardi, M. Quattromini
    ENEA C.R. Frascati, Frascati (Roma)
  • G. Bazzano
    CNAO Foundation, Milan
  • M. Ferrario, M. Migliorati, L. Palumbo, M.A. Preger, C. Sanelli
    INFN/LNF, Frascati (Roma)
  • P. Musumeci
    INFN-Roma, Roma
  • J.B. Rosenzweig
    UCLA, Los Angeles, California
  
  The SPARC photoinjector rf gun requires a solenoid immediately downstream for emittance compensation. The analysis of the measured solenoid magnetic maps shows the existence of multipolar components added to the pure solenoid field. The effect of these added fields on beam dynamics and possible correction schemes have been studied from the theoretical point of view and by numerical calculations based on PARMELA/TREDI codes. An accurate 3D numerical modelization by using CST EM Studio has been done, in order to investigate the source of these multipolar components and to suggest some design modifications aimed to reduce their magnitude. The results of this study are presented here.