Commissioning of the new heavy ion injector at GSI

The Unilac has been upgraded by a new injector linac. It consists of an ECR source, a 108-MHz RFQ linac, and an interdigital H-type accelerator structure. Highly charged ions (such as U/sup 28+/) are extracted from the ion source and accelerated by the RFQ structure up to 300 keV/u. The IH tank accelerates with a very high RF efficiency up to an energy of 1.4 MeV/u. The commissioning of the injector is reported.<
>