STATUS OF THE GSI POSTSTRIPPER - HE-LINAC

The High-Energy (HE) Linac is proposed to substitute the existing UNILAC post-stripper section. The poststripper is an Alvarez DTL, which is in operation over four decades successfully. A quasi Front-to-End simulation along the UNILAC shows that by taking future upgrade options into account already, with the existing Alvarez section the FAIR requirements are not reached. Even by substituting the Alvarez section by the HE Linac the aim is not reached per se regarding the existing boundary conditions. Currently workpackages are defined together with the Institute of Applied Physics at Frankfurt University. Starting from the ion sources to the SIS18 transfer channel every section is reinvestigated for improvements in beam quality and intensity.