The NAL Booster-to-Main Ring Beam Transfer System

The process of transferring the 8 GeV proton beam from the rapid cycling booster synchrotron to the main accelerator at NAL is described in terms of overall system features and optical parameters. Recent tests of the transfer system, using a 1 GeV booster beam, have yielded successful beam extraction from the booster synchrotron of close to 100% efficiency, at low beam intensities (~l ma). Injection into the main accelerator has been accomplished with indications of good transverse matching and good overall control system stability.