Beam Matching Problems concerning the Axial Injection System for the Karlsruhe Cyclotron

The Karlsruhe cyclotron is in operation since 1963. In the meantime, a polarized deuteron source has been developed by a group of GFK Karlsruhe. To operate the cyclotron with polarized ions an axial injection system has been ordered at AEG, associated with the construction of a new RF-system. During a shut-down period of three months the complete new system will be taken in operation in this summer. The system has to operate with an external source as well as with an internal source. The central region and the axial beam line have been calculated to have a full transmittance for a phase space area of 500 mm mrad in both directions and a phase width of 30° (related to the RF) in the 3¿-mode.