Simulations of the Beam Stripper for the Super–FRS Production Target in a Fast Extraction Mode∗

Previously, we reported 3D hydrodynamic simulations of interaction of a wheel shaped solid graphite Super–FRS production target with the SIS100, 1.5 GeV/u uranium beam [1]. These simulations have shown that the target will survive (retain its elastic properties) for a beam intensity of up to 3x10 ions per 50 ns long bunch if one uses a focal spot size that is characterized with σ = 4 mm. However, it is very important that the thin metallic stripper behind the production target also remains intact after the impact of the secondary beam. For this purpose, we report in the present contribution, 3D numerical simulations of the beam–stripper interaction. The stripper thickness is assumed to be 225 mg/cm and we consider three different materials, namely, Al, Cu and Nb.