Accelerating structure of the CERN new 50 MeV linac

The design of the post-coupled Alvarez structure is presented with emphasis on features which are novel and critical especially as regards acceleration of high currents (150 mA) to 50 MeV. Among topics treated are the sequence of computational techniques leading from unit cell (EM field) calculations to dynamics of the complete linac, and model measurements which justify the drift-tube girder support approach and the particular post-coupler arrangement. (11 refs).