The influence of parasitic modes on beam dynamics for the European spallation source linac

Ainsworth, Robert; Molloy, Stephen

doi:10.1016/j.nima.2012.11.034

Cited by 5 publications

(1 citation statement)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where x is the transverse displacement, x is the trajectory inclination angle and N is the bunch total number. For a proton linac running in pulsed mode with a relatively low duty factor (e.g., 5% for SPL [5], 4% for ESS [7] and 6% for SNS [8], etc), Eq. ( 7) and ε HOM /ε r (ε HOM and ε r for the transverse emittance with and without the dipole mode impact respectively) are usually used to evaluate the dipole mode induced beam emittance deterioration.…”

Section: Multi-bunch Effective Emittancementioning

confidence: 99%

Effect of the transverse parasitic mode on beam performance for the ADS driver linac in China

et al. 2015

View full text Add to dashboard Cite

The ADS (Accelerator Driven subcritical System) driver linac in China is designed to run in CW (Continuous Wave) mode with 10 mA designed beam current. In this scenario, the beam-induced parasitic modes in the ADS driver linac may make the beam unstable or deteriorate the beam performance. To evaluate the parasitic mode effect on the beam dynamics systematically, simulation studies using the ROOT-based numerical code SMD have been conducted. The longitudinal beam instability induced by the HOMs (High Order Modes) and SOMs (Same Order Modes) has little effect on the longitudinal beam performance for the current ADS driver linac design based on the 10 MeV/325 MHz injector I from previous studies. Here the transverse parasitic mode (i.e., dipole HOM) effect on the transverse beam performance at the ADS driver linac exit is investigated. To more reasonably quantify the dipole mode effect, the multi-bunch effective emittance is introduced in this paper.

show abstract

Section: Multi-bunch Effective Emittancementioning

confidence: 99%