Author: Anderson, S.D.
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THPMF085 Beam Dynamics Simulation of the Solenoid Sextupole Error in the LCLS-II Injector 4277
  • J. Qiang
    LBNL, Berkeley, California, USA
  • S.D. Anderson, D. Dowell, P. Emma, J.F. Schmerge, M.D. Woodley, F. Zhou
    SLAC, Menlo Park, California, USA
  The LCLS-II injector is a high brightness, high-repetition rate RF injector that consists of a 186 MHz VHF photo-electron gun, a focusing solenoid, a buncher cavity, another focusing solenoid, and a superconducting accelerating cryomodule to boost the electron beam energy to about final 100MeV. The solenoids provide transverse focusing and emittance compensation for the electron beam. However, in reality, the solenoid is not perfect due to manufacturing errors. Especially, the sextupole error in the solenoid field, which can cause significant beam emittance growth. In this paper, we report on the beam dynamics study of the effects of sextupole errors in the current LCLS-II injector.  
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