Dresden 2011 – scientific programme

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MS: Fachverband Massenspektrometrie

MS 6: Ion Storage Rings

MS 6.3: Talk

Wednesday, March 16, 2011, 14:45–15:00, GÖR 229

New Isochronous Mode of the ESR — •Sergey Litvinov¹, Alexei Dolinskii¹, Christina Dimopoulou¹, Hans Geissel¹, Bernhard Franczak¹, Yuri Litvinov², Fritz Nolden¹, Markus Steck¹, and Helmut Weick¹ — ¹GSI (Gesellschaft für Schwerionenforschung), Darmstadt, Germany — ²Max-Plack Institut for Nuclear Physics, Heidelberg, Germany

Isochronous Mass Spectrometry (IMS) is an experimental technique for direct mass measurements of short-lived exotic nuclei which has been developed at the storage ring facility ESR of GSI. A bottleneck for the present IMS experiments is the low transmission from the fragment separator FRS to the ESR, which is mainly due to large negative dispersion in the straight sections of the ESR.

In order to facilitate the transmission and to improve the isochronicity of the ring, the present isochronous optics of the ESR has been recalculated. A new isochronous setting has been experimentally verified. The results of the first test run and the perspectives of further improvements will be presented. A sketch of the new isochronous storage ring CR within the future FAIR project will be outlined.