Status Report on the Upgraded Unilac

By adding two Alvarez tanks to the Unilac post-stripper maximum energies can be achieved of 19 MeV/u for uranium, and more than 20 MeV/u for ions of medium mass (A < 150) using a second stripper in front of the single-gap cavity resonators. The injector beam transport system was modified, too, resulting, together with ion source developments, in an increase of beam intensities of about one order of magnitude. Operating experience of the first year after the upgrading is reported.