Düsseldorf 2007 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 6: Präzisionsmassenspektrometrie und Ionenfallen
MS 6.5: Vortrag
Mittwoch, 21. März 2007, 15:15–15:30, 5F
Trapping and Cooling of Highly Charged Ions at the HITRAP facility — •Stephen Koszudowski1, Klaus Blaum2, Sergej Eliseev1, Oliver Kester1, Heinz-Jürgen Kluge1, Christophor Kozhuharov1, Giancarlo Maero1, Dennis Neidherr2, Wolfgang Quint1, Stefan Schwarz3, Stefan Stahl2, and Gleb Vorobjev1 — 1GSI, Planckstr. 1, 64291 Darmstadt, Germany — 2Institut für Physik, Johannes Gutenberg Universität, Staudingerweg 7, 55128 Mainz, Germany — 3NSCL/MSU, South Shaw Lane, East Lansing, MI 48824, USA
With the HITRAP facility the means are given to trap and cool heavy highly charged ions up to U92+ in order to perform experiments on atomic properties. These include collision studies, precision measurements and hyperfine spectroscopy. Within the Cooler Trap 10e5 particles will be cooled by electron and resistive cooling down to 4K. For the electron cooling electrons produced by an electron source have to be loaded and confined in the trap. Then the ions coming from the decelerator with an energy of 6keV/u are loaded into the trap. Therefore the entrance electrode needs to be switched with about 2keV in 400ns, which will be conducted by Behlke switches. In order to manipulate the electrons and ions inside of the trap, on each trap electrode a voltage of +-200V maximum can be applied by special power supplies build at GSI. For the precision measurements and the in trap diagnostic different ion motions can be accessed via quadrupol or dipol exitation. We give an overview on the trapping process and the needed electronics.