Beam control and characterization of the new SLS 2.0 booster-to-ring transfer line

Off-axis top-up injection into 4th generation storage ring light sources is complicated due to the transverse acceptance, which is typically in the order of a few millimeters. Therefore, the characteristics and control of the incoming beam from the transfer line plays an important role in achieving successful injection. SLS 2.0, the storage ring upgrade of the Swiss Light Source, is among the facilities where precise knowledge and control of the injected beam is important, particularly due to the usage of emittance exchange in the booster synchrotron. Here we highlight the most important design aspects of the new SLS 2.0 booster-to-ring transfer line, including the nondispersive section for beam characterization and the double-corrector configuration allowing injection position and angle control. Furthermore, we present the first experience with quadrupole scans and stabilization of the injected beam.