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Ion-Optical Matching of the FRS-ESR in the Isochronous Mode

Isochronous Mass Spectrometry (IMS) is an experimental technique for direct measurements of short-lived exoti c nuclei which has been developed at the FRS-ESR facility at GSI [1]. A bottleneck for the present IMS experiments is the low transmission in the injection channel of the ESR [2]. Further losses occur due to possible an ionoptical mismatch between the FRS [3] and the ESR. Here the results of the first FRS-ESR matching are presented and critical views on the mismatching are shown.