Title: The Effect of Electron Lens as Landau Damping Device on Single Particle Dynamics in HL-LHC,
Abstract: An electron lens can serve as an effective mechanism for suppressing coherent
instabilities in high intensity storage rings through nonlinear amplitude
dependent betatron tune shift. However, the addition of a strong localized
nonlinear focusing element to the accelerator lattice may lead to undesired
effects in particle dynamics. We evaluate the effect of a Gaussian electron
lens on single particle motion in HL-LHC using numerical tracking simulations,
and compare the results to the case when an equal tune spread is generated by
conventional octupole magnets.