摘要
The Xi’an proton accelerator facility synchrotron lattice has a systematic fourth-order resonance. The systematic octupole component in dipole magnets is found to have no adverse effect on the dynamic aperture in multiparticle tracking. The frequency map shows particles locked onto the 2v x 2v z-0 resonance. However, we will show that the instantaneous betatron tunes can vary widely around the resonance line for particles locked onto the resonance.
The Xi’an proton accelerator facility synchrotron lattice has a systematic fourth-order resonance.The systematic octupole component in dipole magnets is found to have no adverse effect on the dynamic aperture in multiparticle tracking.The frequency map shows particles locked onto the 2v_x-2v_z= 0 resonance.However,we will show that the instantaneous betatron tunes can vary widely around the resonance line for particles locked onto the resonance.
基金
supported by U.S.National Science Foundation(No.PHY-1504778)
