The disassembly of the Unilac prestripper linac of the Wideroe type took
place at the beginning of 1999. An increase of more than two orders of
magnitude in particle number for the most heavy elements in the SIS had to be
gained. Since that time the new High Current Injector (HSI) consisting of
H-type RFQ and DTL-structures for dual beam operation was installed and
successfully commissioned. The High Charge Injector (HLI) supplied the main
linac during that time. Simultaneously conditioning and running in of the
rf-transmitters and rf-structures were done. The HSI commissioning strategy
included beam investigation after each transport and acceleration section,
using a versatile diagnostic test stand. Results of the extensive commissioning
measurements (e.g. transverse emittance, bunch width, beam transmission) behind
LEBT, RFQ, Super Lens, IH tank I and II and stripping section will be
discussed. An 40Ar1+ beam coming from a MUCIS ion source was used to fill the
linac up to the theoretical space charge limit. Routine operation started in
November 1999.Comment: Linac 2000, FR201, 5 pages, 8 figure
