AN ION-SOURCE TEST STAND FOR THE ISAC FACILITY AT TRIUMF

The properties of ion sources and the beams extracted from them are cr itical to the successful design of the ISAC facility at TRIUMF. To bet ter understand these properties, an off line 60 kV test stand has been constructed to test and evaluate targets and ion sources intended for use at the future ISAC facility. The test stand also presents the opp ortunity to evaluate diagnostics, beam monitoring and system control t echniques required for ISAC. The test stand vacuum chamber mimics the ISAC target module. Ion beams are produced using a fixed geometry mult ielectrode extraction column and transported through 5m of beamline us ing electrostatic elements. Mass analysis is achieved using a 45 degre es magnetic dipole midway along the flight path. Diagnostic elements p ositioned throughout the beamline are used to determine beam propertie s.