Dresden 2011 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 8: New Mass Spectrometric Methods and Technical Developments
MS 8.5: Vortrag
Donnerstag, 17. März 2011, 11:45–12:00, GÖR 229
A versatile Diagnosis Tool for Low Energy Radio Frequenzy Quadrupole Beam Lines — •Moritz Pascal Reiter1, Timo Dickel1,2, Wolfgang R. Plass1,2, Christian Jesch1, Christoph Scheidenberger1,2, and Hans Geissel1,2 — 1Justus-Liebig-Universität Giessen — 2GSI, Darmstadt
Conventional low energy beam lines use a structure of electrostatic or magnetic fields for transporting and guiding ions. A novel concept uses continually RF fields for ion transmission. Such an RFQ transport system features a high transmission efficiency, can be compact, easy to optimize and is inexpensive compared to conventional beam lines. In order to facilitate a highly efficient transport, only gaps in the order of millimeters in the RFQ structure can be tolerated. Therefore, it is difficult to implement valves and beam diagnosis tools.
For the first time, a system of movable RFQs has been developed that allows to isolate parts of an RFQ transport system with a valve and to insert various detectors and test ion sources into such an RFQ beam line.
The setup has been built and will be employed in the FRS Ion Catcher experiment behind the new cryogenic stopping cell.