1. Institute of Applied Physics, Goethe University Frankfurt, Max-von-Laue-Str. 1, D-60438 Frankfurt am Main, Germany
2. Commons—Vacuum Systems, GSI Helmholtz Centre for Heavy Ion Research, Planckstrasse 1, D-64220 Darmstadt, Germany
3. SIS100/SIS18—Special Installations, GSI Helmholtz Centre for Heavy Ion Research, Planckstrasse 1, D-64220 Darmstadt, Germany