Abstract
At GSI different ion beams are delivered to the UNILAC, the synchrotron SIS or to the storage ring ESR. For that purpose three different injectors are in use for the UNILAC, equipped with different ion sources. The standard injector with a Penning ion source and the high current injector (with CHORDIS or MEVVA ion source) supply the Widere accelerator (pre-stripper section of UNILAC) with an injection energy of 11.7 keV/u. The newly built high charge state injector HLI is equipped with an ECR ion source (CAPRICE). The injection energy for the succeeding RFQ and IH accelerator is 2.5 keV/u. Both beams are further accelerated in the Alvarez accelerator (post-stripper section of UNILAC) with an injection energy of 1.4 MeV/u. For ion source tests and developments additional test benches are available. The specific advantages of each injector, recent improvements and specific operating modes are described.
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