Optimization of the Compact Linear Collider rings-to-main-linac at 380 GeV

The baseline configuration of the Compact Linear Collider’s rings-to-main-linac sections has been optimized for the 380 GeV center-of-mass energy stage, and some outstanding issues in previous designs have been resolved. In particular, the bunch compressors have been redesigned to reduce power consumption and cost. The impact of the bunch phase error from the damping ring to the main linac has been investigated and optimized. A complete and improved set of beam-based alignment methods is outlined, and detailed realistic simulations showing its effectiveness in addressing static imperfections such as element misalignment and magnet strength errors are presented.