DESIGN PARAMETERS, GOALS, AND STATUS OF THE NEW ATLAS ECR ION-SOURCE

A new 14 GHz ECR ion source for the ATLAS facility is under constructi on. The new source is an evolution of the 14 GHz AECR Lawrence Berkele y source. The new source will feature an all-aluminum hexapole main ch amber and enhanced peak radial and solenoid magnetic fields compared t o the existing AECR. Most of the other design features of the existing source are maintained in this design. The new source will be mounted on a new 300 kV high-voltage platform in order to match the velocity r equirements of the existing PII injector linac. Achieving the very pre cise goal of a few electrical microamps of U-238(+33) from this source Will allow the ATLAS facility to provide Coulomb-barrier energies of uranium without the use of an additional stripper foil and will signif icantly enhance the capabilities of ATLAS for the heaviest of beams. T he project status and more details of the source system design are dis cussed. (C) 1996 American Institute of Physics.