Design of a BPM pick-up for the EIC electron storage ring

A new beam position monitor (BPM) pick-up, compatible to operate reliably with the high current electron beams foreseen in the 5 - 18 GeV Electron Storage Ring (ESR) of the Electron-Ion Collider (EIC) project, is presented. We discuss a few design options for this button-style BPM pick-up with a focus on output signal levels, position characteristic, and wakefield effects. Regarding the octagonal cross-section geometry of the ESR vacuum chamber, the BPM pick-up analysis relies on numerical methods, here performed using the CST Studio software.