An 8 GEV H- multi-turn injection system for the Fermilab Main Injector

An 8 GeV superconducting linear accelerator (SCL) has been proposed [1] as a single stage H^- injector into the Main Injector (MI) synchrotron . This would be the highest energy H- multi-turn injection system in the world. The conceptual design of an injection system has been further refined by addressing transverse phase space painting issues, chicane dipole fields and foil location, foil temperature issues, and initial longitudinal phase space painting simulations. We present the current state of design.