Kink instability suppression with stochastic cooling pickup and kicker

The kink instability is one of the major beam dynamics issues of the linac-ring basedelectron ion collider. This head-tail type instability arises from the oscillation of theelectron beam inside the opposing ion beam. It must be suppressed to achieve the desiredluminosity. There are various ways to suppress the instability, such as tuning thechromaticity in the ion ring or by a dedicated feedback system of the electron beamposition at IP, etc. However, each method has its own limitation. In this paper, we willdiscuss an alternative opportunity of suppressing the kink instability of the proposedeRHIC at BNL using the existing pickup-kicker system of the stochastic cooling system in RHIC.