Feasibility study of 8-MeV H− cyclotron to charge the electron cooling system for HESR

A compact cyclotron to accelerate negative hydrogen ions up to 8 MeV is considered as a possible solution to charge the high voltage terminal of the Electron Cooling System for High Energy Storage Ring at GSI (HESR Project, Darmstadt). Physical as well as technical parameters of the accelerator are estimated. Different modifications of commercially available cyclotrons are considered. Parameters of accelerators as a possible source of a 1-mA H− beam for HESR are compared. An original design based on the application of well-established technical solutions for commercial accelerators is proposed.