Design study of an upgraded charge breeder for ISOLDE

In this work we present our progress in the design study of a new Electron Beam Ion Source (EBIS) to be installed as a charge breeder for reacceleration of rare ions at ISOLDE. The work is triggered by the HIE-ISOLDE upgrade [1] and the planned TSR@ISOLDE project [2]. To fulfill the requests of the user community the new EBIS should reach an electron beam density of 104 A/cm2 at electron energies up to 150 keV and, provide UHV environment and ion cooling in the breeding region to ensure confinement of the ions long enough to reach the requested charge states. We report on the established design parameters and first prototyping steps towards production and testing of suitable equipment.